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私が次の活動に行く意図を開始したとき。上記のエラーが発生します。次のアクティビティに移動できません (下記の SecondActivity.java を参照)。

私の MainActivity は次のとおりです。

package com.example.testflashfile;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
import android.view.MotionEvent;


public class MainActivity extends Activity
{
    Button nextButton;
    Button playButton;
    private static final int SWIPE_MIN_DISTANCE = 120;
    private static final int SWIPE_MAX_OFF_PATH = 250;
    private static final int SWIPE_THRESHOLD_VELOCITY = 200;

    GestureDetector gestureDetector;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
        setContentView(R.layout.activity_main);

        gestureDetector = new GestureDetector(this.getApplicationContext(),new MyGestureDetector());
        View mainview = (View) findViewById(R.id.mainView);

        // Set the touch listener for the main view to be our custom gesture listener
        mainview.setOnTouchListener(new View.OnTouchListener() {
            public boolean onTouch(View v, MotionEvent event) {
                if (gestureDetector.onTouchEvent(event)) {
                    return true;
                }
                return false;
            }
        });


        playButton=(Button)findViewById(R.id.play);
        playButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent startAnimation=new Intent(MainActivity.this,PlayAnimationActivity.class);
                startAnimation.putExtra("SWF_NAME","a");
                startActivity(startAnimation);
            }
        });


        TextView helloTxt = (TextView)findViewById(R.id.displaytext);
        helloTxt.setText(readTxt());
        nextButton=(Button)findViewById(R.id.next);
        nextButton.setOnClickListener(new OnClickListener() {


            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(MainActivity.this,SecondActivity.class);
                startActivity(intent);

            }
        });


    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }


    private String readTxt(){

        InputStream inputStream = getResources().openRawResource(R.raw.textone);

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

        int i;
        try {
            i = inputStream.read();
            while (i != -1)
            {
                byteArrayOutputStream.write(i);
                i = inputStream.read();
            }

            inputStream.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return byteArrayOutputStream.toString();
    } 



    class MyGestureDetector extends SimpleOnGestureListener 
    {


        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {


            if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH) {
                return false;
            }

            // right to left swipe
            if(e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {

                Intent i= new Intent(MainActivity.this,SecondActivity.class);
                startActivity(i);

                //  left to right  swipe
            }  else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {


                Intent i= new Intent(MainActivity.this,FifthActivity.class);
                startActivity(i);

            }

            return false;
        }


        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }



    }

}

2 つ目のアクティビティは次のとおりです。

package com.example.testflashfile;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;



public class SecondActivity extends Activity {

    Button nextButton2;
    Button backButton2;
    Button playButton2;
    private static final int SWIPE_MIN_DISTANCE = 120;
    private static final int SWIPE_MAX_OFF_PATH = 250;
    private static final int SWIPE_THRESHOLD_VELOCITY = 200;
    GestureDetector gestureDetector; 

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
        setContentView(R.layout.second);

        gestureDetector = new GestureDetector(this.getApplicationContext(),new MyGestureDetector());
        View mainview = (View) findViewById(R.id.mainView);

        // Set the touch listener for the main view to be our custom gesture listener
        mainview.setOnTouchListener(new View.OnTouchListener() {
            public boolean onTouch(View v, MotionEvent event) {
                if (gestureDetector.onTouchEvent(event)) {
                    return true;
                }
                return false;
            }
        });


        TextView helloTxt = (TextView)findViewById(R.id.displaytexttwo);
        helloTxt.setText(readTxt());
        nextButton2=(Button)findViewById(R.id.nexttwo);
        nextButton2.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(SecondActivity.this,ThirdActivity.class);
                startActivity(intent);

            }
        });

        playButton2=(Button)findViewById(R.id.play);
        playButton2.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent startAnimation=new Intent(SecondActivity.this,PlayAnimationActivity.class);
                startAnimation.putExtra("SWF_NAME","b");
                startActivity(startAnimation);
            }
        });

        backButton2=(Button)findViewById(R.id.backtwo);
        backButton2.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(SecondActivity.this,MainActivity.class);
                startActivity(intent);

            }
        });


    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }



    private String readTxt(){

        InputStream inputStream = getResources().openRawResource(R.raw.texttwo);

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

        int i;
        try {
            i = inputStream.read();
            while (i != -1)
            {
                byteArrayOutputStream.write(i);
                i = inputStream.read();
            }
            inputStream.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return byteArrayOutputStream.toString();
    }


    class MyGestureDetector extends SimpleOnGestureListener 
    {


        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {


            if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH) {
                return false;
            }

            // right to left swipe
            if(e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {

                Intent i= new Intent(SecondActivity.this,ThirdActivity.class);
                startActivity(i);

                //  left to right  swipe
            }  else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {


                Intent i= new Intent(SecondActivity.this,MainActivity.class);
                startActivity(i);

            }

            return false;
        }


        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }



    }
}

ここでどこが間違っているのかわかりません。このエラーに関連するスタック オーバーフローについて、同様のスレッドを確認しました。しかし、説明はそれほど明確ではありませんでした。どんな助け/提案も大歓迎です。このような長い投稿をお読みいただき、ありがとうございます。

丸太猫は次のとおりです。

03-11 10:03:18.599: D/dalvikvm(336): GC_EXTERNAL_ALLOC freed 66K, 52% free 2585K/5379K, external 2032K/2137K, paused 92ms
03-11 10:03:18.729: D/AndroidRuntime(336): Shutting down VM
03-11 10:03:18.729: W/dalvikvm(336): threadid=1: thread exiting with uncaught exception (group=0x40015560)
03-11 10:03:18.749: E/AndroidRuntime(336): FATAL EXCEPTION: main
03-11 10:03:18.749: E/AndroidRuntime(336): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.testflashfile/com.example.testflashfile.SecondActivity}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.os.Looper.loop(Looper.java:123)
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.app.ActivityThread.main(ActivityThread.java:3683)
03-11 10:03:18.749: E/AndroidRuntime(336):  at java.lang.reflect.Method.invokeNative(Native Method)
03-11 10:03:18.749: E/AndroidRuntime(336):  at java.lang.reflect.Method.invoke(Method.java:507)
03-11 10:03:18.749: E/AndroidRuntime(336):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-11 10:03:18.749: E/AndroidRuntime(336):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-11 10:03:18.749: E/AndroidRuntime(336):  at dalvik.system.NativeStart.main(Native Method)
03-11 10:03:18.749: E/AndroidRuntime(336): Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
03-11 10:03:18.749: E/AndroidRuntime(336):  at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:181)
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.app.Activity.requestWindowFeature(Activity.java:2729)
03-11 10:03:18.749: E/AndroidRuntime(336):  at com.example.testflashfile.SecondActivity.onCreate(SecondActivity.java:35)
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-11 10:03:18.749: E/AndroidRuntime(336):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
03-11 10:03:18.749: E/AndroidRuntime(336):  ... 11 more
03-11 10:03:21.539: I/Process(336): Sending signal. PID: 336 SIG: 9
03-11 12:37:51.179: D/dalvikvm(382): GC_EXTERNAL_ALLOC freed 67K, 53% free 2581K/5379K, external 2032K/2137K, paused 199ms
03-11 12:37:51.478: D/AndroidRuntime(382): Shutting down VM
03-11 12:37:51.479: W/dalvikvm(382): threadid=1: thread exiting with uncaught exception (group=0x40015560)
03-11 12:37:51.722: E/AndroidRuntime(382): FATAL EXCEPTION: main
03-11 12:37:51.722: E/AndroidRuntime(382): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.testflashfile/com.example.testflashfile.SecondActivity}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.os.Looper.loop(Looper.java:123)
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.app.ActivityThread.main(ActivityThread.java:3683)
03-11 12:37:51.722: E/AndroidRuntime(382):  at java.lang.reflect.Method.invokeNative(Native Method)
03-11 12:37:51.722: E/AndroidRuntime(382):  at java.lang.reflect.Method.invoke(Method.java:507)
03-11 12:37:51.722: E/AndroidRuntime(382):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-11 12:37:51.722: E/AndroidRuntime(382):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-11 12:37:51.722: E/AndroidRuntime(382):  at dalvik.system.NativeStart.main(Native Method)
03-11 12:37:51.722: E/AndroidRuntime(382): Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
03-11 12:37:51.722: E/AndroidRuntime(382):  at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:181)
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.app.Activity.requestWindowFeature(Activity.java:2729)
03-11 12:37:51.722: E/AndroidRuntime(382):  at com.example.testflashfile.SecondActivity.onCreate(SecondActivity.java:35)
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-11 12:37:51.722: E/AndroidRuntime(382):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
03-11 12:37:51.722: E/AndroidRuntime(382):  ... 11 more
03-11 12:37:57.159: I/Process(382): Sending signal. PID: 382 SIG: 9
03-11 12:40:41.579: W/ActivityThread(418): Application com.example.testflashfile is waiting for the debugger on port 8100...
03-11 12:40:41.649: I/System.out(418): Sending WAIT chunk
03-11 12:40:42.381: I/dalvikvm(418): Debugger is active
03-11 12:40:42.499: I/System.out(418): Debugger has connected
03-11 12:40:42.499: I/System.out(418): waiting for debugger to settle...
03-11 12:40:42.703: I/System.out(418): waiting for debugger to settle...
03-11 12:40:43.011: I/System.out(418): waiting for debugger to settle...
03-11 12:40:43.209: I/System.out(418): waiting for debugger to settle...
03-11 12:40:43.419: I/System.out(418): waiting for debugger to settle...
03-11 12:40:43.619: I/System.out(418): waiting for debugger to settle...
03-11 12:40:43.869: I/System.out(418): waiting for debugger to settle...
03-11 12:40:44.070: I/System.out(418): waiting for debugger to settle...
03-11 12:40:44.269: I/System.out(418): waiting for debugger to settle...
03-11 12:40:44.469: I/System.out(418): waiting for debugger to settle...
03-11 12:40:44.720: I/System.out(418): waiting for debugger to settle...
03-11 12:40:44.925: I/System.out(418): waiting for debugger to settle...
03-11 12:40:45.140: I/System.out(418): waiting for debugger to settle...
03-11 12:40:45.339: I/System.out(418): waiting for debugger to settle...
03-11 12:40:45.559: I/System.out(418): waiting for debugger to settle...
03-11 12:40:45.793: I/System.out(418): waiting for debugger to settle...
03-11 12:40:46.031: I/System.out(418): waiting for debugger to settle...
03-11 12:40:46.261: I/System.out(418): waiting for debugger to settle...
03-11 12:40:46.468: I/System.out(418): waiting for debugger to settle...
03-11 12:40:46.669: I/System.out(418): waiting for debugger to settle...
03-11 12:40:46.875: I/System.out(418): waiting for debugger to settle...
03-11 12:40:47.109: I/System.out(418): debugger has settled (1505)
03-11 12:49:24.089: D/dalvikvm(418): GC_EXTERNAL_ALLOC freed 68K, 52% free 2583K/5379K, external 2032K/2137K, paused 212ms
03-11 12:51:01.819: D/AndroidRuntime(418): Shutting down VM
03-11 12:51:01.839: W/dalvikvm(418): threadid=1: thread exiting with uncaught exception (group=0x40015560)
03-11 12:51:07.499: E/AndroidRuntime(418): FATAL EXCEPTION: main
03-11 12:51:07.499: E/AndroidRuntime(418): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.testflashfile/com.example.testflashfile.SecondActivity}: java.lang.NullPointerException
03-11 12:51:07.499: E/AndroidRuntime(418):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
03-11 12:51:07.499: E/AndroidRuntime(418):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
03-11 12:51:07.499: E/AndroidRuntime(418):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
03-11 12:51:07.499: E/AndroidRuntime(418):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
03-11 12:51:07.499: E/AndroidRuntime(418):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-11 12:51:07.499: E/AndroidRuntime(418):  at android.os.Looper.loop(Looper.java:123)
03-11 12:51:07.499: E/AndroidRuntime(418):  at android.app.ActivityThread.main(ActivityThread.java:3683)
03-11 12:51:07.499: E/AndroidRuntime(418):  at java.lang.reflect.Method.invokeNative(Native Method)
03-11 12:51:07.499: E/AndroidRuntime(418):  at java.lang.reflect.Method.invoke(Method.java:507)
03-11 12:51:07.499: E/AndroidRuntime(418):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-11 12:51:07.499: E/AndroidRuntime(418):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-11 12:51:07.499: E/AndroidRuntime(418):  at dalvik.system.NativeStart.main(Native Method)
03-11 12:51:07.499: E/AndroidRuntime(418): Caused by: java.lang.NullPointerException
03-11 12:51:07.499: E/AndroidRuntime(418):  at com.example.testflashfile.SecondActivity.onCreate(SecondActivity.java:69)
03-11 12:51:07.499: E/AndroidRuntime(418):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-11 12:51:07.499: E/AndroidRuntime(418):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
03-11 12:51:07.499: E/AndroidRuntime(418):  ... 11 more
03-11 12:56:07.749: I/Process(418): Sending signal. PID: 418 SIG: 9
03-11 14:17:47.570: D/dalvikvm(457): GC_EXTERNAL_ALLOC freed 68K, 53% free 2581K/5379K, external 2032K/2137K, paused 116ms
03-11 14:17:47.699: D/AndroidRuntime(457): Shutting down VM
03-11 14:17:47.699: W/dalvikvm(457): threadid=1: thread exiting with uncaught exception (group=0x40015560)
03-11 14:17:47.729: E/AndroidRuntime(457): FATAL EXCEPTION: main
03-11 14:17:47.729: E/AndroidRuntime(457): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.testflashfile/com.example.testflashfile.SecondActivity}: java.lang.NullPointerException
03-11 14:17:47.729: E/AndroidRuntime(457):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
03-11 14:17:47.729: E/AndroidRuntime(457):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
03-11 14:17:47.729: E/AndroidRuntime(457):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
03-11 14:17:47.729: E/AndroidRuntime(457):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
03-11 14:17:47.729: E/AndroidRuntime(457):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-11 14:17:47.729: E/AndroidRuntime(457):  at android.os.Looper.loop(Looper.java:123)
03-11 14:17:47.729: E/AndroidRuntime(457):  at android.app.ActivityThread.main(ActivityThread.java:3683)
03-11 14:17:47.729: E/AndroidRuntime(457):  at java.lang.reflect.Method.invokeNative(Native Method)
03-11 14:17:47.729: E/AndroidRuntime(457):  at java.lang.reflect.Method.invoke(Method.java:507)
03-11 14:17:47.729: E/AndroidRuntime(457):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-11 14:17:47.729: E/AndroidRuntime(457):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-11 14:17:47.729: E/AndroidRuntime(457):  at dalvik.system.NativeStart.main(Native Method)
03-11 14:17:47.729: E/AndroidRuntime(457): Caused by: java.lang.NullPointerException
03-11 14:17:47.729: E/AndroidRuntime(457):  at com.example.testflashfile.SecondActivity.onCreate(SecondActivity.java:44)
03-11 14:17:47.729: E/AndroidRuntime(457):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-11 14:17:47.729: E/AndroidRuntime(457):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
03-11 14:17:47.729: E/AndroidRuntime(457):  ... 11 more

マニフェストは次のとおりです。

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.testflashfile"
    android:versionCode="1"
    android:versionName="1.0"
     >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17"
         />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme"
        android:hardwareAccelerated="true" 
        android:debuggable="true">
        <activity
            android:screenOrientation="portrait"
            android:name="com.example.testflashfile.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.example.testflashfile.SecondActivity"
            android:screenOrientation="portrait"></activity>
         <activity android:name="com.example.testflashfile.ThirdActivity"
             android:screenOrientation="portrait"></activity>
          <activity android:name="com.example.testflashfile.FourthActivity"
              android:screenOrientation="portrait"></activity>
          <activity android:name="com.example.testflashfile.FifthActivity"
              android:screenOrientation="portrait"></activity>

<activity android:name="com.example.testflashfile.PlayAnimationActivity"
               android:screenOrientation="portrait"></activity>

    </application>

</manifest>
4

2 に答える 2

1

こんにちはみんな私の問題は解決しました。しかし、私のコードが間違っていた場所を正確に特定することはできません。しかし、私にとって何がうまくいったかについて皆さんに更新したいと思います（これよりも良い解決策があるかもしれません。いつでもこの投稿を編集してください）。

ここに私の MainActivity があります：

package com.example.testflashfile;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
import android.view.MotionEvent;
import com.example.testflashfile.GlobalVariables;


public class MainActivity extends Activity
{
    Button nextButton;
    Button playButton;
    Button backButton;


    GestureDetector gestureDetector;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
        setContentView(R.layout.activity_main);

        TextView helloTxt = (TextView)findViewById(R.id.displaytext);
        helloTxt.setText(readTxt());


        gestureDetector = new GestureDetector(this.getApplicationContext(),new MyGestureDetector());
        View mainview = (View) findViewById(R.id.mainView);

        // Set the touch listener for the main view to be our custom gesture listener
        mainview.setOnTouchListener(new View.OnTouchListener() {
            public boolean onTouch(View v, MotionEvent event) {
                if (gestureDetector.onTouchEvent(event)) {
                    return true;
                }
                return false;
            }
        });


        playButton=(Button)findViewById(R.id.play);
        playButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent startAnimation=new Intent(MainActivity.this,PlayAnimationActivity.class);
                startAnimation.putExtra("SWF_NAME","a");
                startActivity(startAnimation);
            }
        });



        nextButton=(Button)findViewById(R.id.next);
        nextButton.setOnClickListener(new OnClickListener() {


            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(MainActivity.this,SecondActivity.class);
                startActivity(intent);

            }
        });

        backButton=(Button)findViewById(R.id.back);
        backButton.setOnClickListener(new OnClickListener() {


            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(MainActivity.this,FifthActivity.class);
                startActivity(intent);

            }
        });


    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }


    private String readTxt(){

        InputStream inputStream = getResources().openRawResource(R.raw.textone);

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

        int i;
        try {
            i = inputStream.read();
            while (i != -1)
            {
                byteArrayOutputStream.write(i);
                i = inputStream.read();
            }

            inputStream.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return byteArrayOutputStream.toString();
    } 



    public class MyGestureDetector extends SimpleOnGestureListener
    {


        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {


            if (Math.abs(e1.getY() - e2.getY()) > GlobalVariables.SWIPE_MAX_OFF_PATH) {
                return false;
            }

            // right to left swipe
            if(e1.getX() - e2.getX() > GlobalVariables.SWIPE_MIN_DISTANCE && Math.abs(velocityX) > GlobalVariables.SWIPE_THRESHOLD_VELOCITY) {

                Intent i= new Intent(MainActivity.this,SecondActivity.class);
                startActivity(i);

                //  left to right  swipe
            }  else if (e2.getX() - e1.getX() > GlobalVariables.SWIPE_MIN_DISTANCE && Math.abs(velocityX) > GlobalVariables.SWIPE_THRESHOLD_VELOCITY) {


                Intent i= new Intent(MainActivity.this,FifthActivity.class);
                startActivity(i);

            }

            return false;
        }


        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }



    }

}

SecondActivity は次のとおりです。

package com.example.testflashfile;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;



import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;


public class SecondActivity extends Activity
{
    Button nextButton,backButton,playButton;
    GestureDetector gestureDetector;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second);

        TextView helloTxt = (TextView)findViewById(R.id.displaytexttwo);
        helloTxt.setText(readTxt());


        gestureDetector = new GestureDetector(this.getApplicationContext(),new MyGestureDetector());
        View mainview = (View) findViewById(R.id.mainViewtwo);

        // Set the touch listener for the main view to be our custom gesture listener
        mainview.setOnTouchListener(new View.OnTouchListener() {
            public boolean onTouch(View v, MotionEvent event) {
                if (gestureDetector.onTouchEvent(event)) {
                    return true;
                }
                return false;
            }
        });


        playButton=(Button)findViewById(R.id.playtwo);
        playButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent startAnimation=new Intent(SecondActivity.this,PlayAnimationActivity.class);
                startAnimation.putExtra("SWF_NAME","b");
                startActivity(startAnimation);
            }
        });



        nextButton=(Button)findViewById(R.id.nexttwo);
        nextButton.setOnClickListener(new OnClickListener() {


            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(SecondActivity.this,ThirdActivity.class);
                startActivity(intent);

            }
        });

        backButton=(Button)findViewById(R.id.backtwo);
        backButton.setOnClickListener(new OnClickListener() {


            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(SecondActivity.this,MainActivity.class);
                startActivity(intent);

            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }


    private String readTxt(){

        InputStream inputStream = getResources().openRawResource(R.raw.texttwo);

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

        int i;
        try {
            i = inputStream.read();
            while (i != -1)
            {
                byteArrayOutputStream.write(i);
                i = inputStream.read();
            }

            inputStream.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return byteArrayOutputStream.toString();
    } 

    public class MyGestureDetector extends SimpleOnGestureListener
    {


        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {


            if (Math.abs(e1.getY() - e2.getY()) > GlobalVariables.SWIPE_MAX_OFF_PATH) {
                return false;
            }

            // right to left swipe
            if(e1.getX() - e2.getX() > GlobalVariables.SWIPE_MIN_DISTANCE && Math.abs(velocityX) > GlobalVariables.SWIPE_THRESHOLD_VELOCITY) {

                Intent i= new Intent(SecondActivity.this,ThirdActivity.class);
                startActivity(i);

                //  left to right  swipe
            }  else if (e2.getX() - e1.getX() > GlobalVariables.SWIPE_MIN_DISTANCE && Math.abs(velocityX) > GlobalVariables.SWIPE_THRESHOLD_VELOCITY) {


                Intent i= new Intent(SecondActivity.this,MainActivity.class);
                startActivity(i);

            }

            return false;
        }


        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }

    }
}

スワイプメソッドで同じ変数を使用していたため、アクティビティ用にグローバル変数クラスを作成しました

パッケージ com.example.testflashfile;

パブリック クラス グローバル変数 {

static final int SWIPE_MIN_DISTANCE = 120;
static final int SWIPE_MAX_OFF_PATH = 250;
static final int SWIPE_THRESHOLD_VELOCITY = 200;

}

この変更により、私の問題は何とか解決しました。方法はまだわかりません。しかし、これがうまくいきました。

この作業の背後にある実際の理由を知りたいです。今のところコードは機能しており、先に進んでいます。

ヘルプとポインタをありがとう。

于 2013-03-12T09:29:09.213 に答える
0

マニフェストの 2 番目のアクティビティのタグから 'screenOrientation="portrait' を削除します。リクエスト... メソッドを呼び出す前に、アクティビティの方向プロパティを既に設定しています。

于 2013-03-11T09:42:45.243 に答える