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SMS の受信を待っている間に進行状況ダイアログを表示するアプリを作成したいと思います。SMS を受信すると、null 以外の TextView smsReceive が進行状況ダイアログを閉じる条件として提供されます。しかし、runtimeException が発生します。コードの何を変更すればよいか教えてください。

package cx.opseng.PerfTOLD;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.SmsManager;
import android.telephony.SmsMessage;
import android.util.Log;
import android.widget.TextView;

public class Sms extends Activity {
/** Called when the activity is first created. */

static TextView smsReceive;
static TextView smsReceiveChar;

@Override
protected void onCreate(Bundle savedInstanceState) 
{       
    super.onCreate(savedInstanceState);
    setContentView(R.layout.sms);

    Intent i = getIntent();
    // Receiving the Data
    String reg = i.getStringExtra("reg");
    String port = i.getStringExtra("port");

    String smsMessage = reg + port ;

    // Show SMS sent message on screen 
    TextView smsSend = (TextView) findViewById(R.id.smsSend);
    smsSend.setText(smsMessage);
    Log.i("smsSend",String.valueOf(smsSend.getText()));
    // Send SMS message
    SmsManager sm = SmsManager.getDefault();
    String number = "5556";
    sm.sendTextMessage(number, null, smsMessage, null, null);

    ProgressDialog dialog = new ProgressDialog(Sms.this);
    dialog.setMessage("working hard......");
    dialog.setIndeterminate(true);
    dialog.setCancelable(true);
    dialog.show();

    // Receive SMS message
    smsReceive = null;
    smsReceive = (TextView) findViewById(R.id.smsReceive);
    Log.i("smsReceive",smsReceive.getText().toString());
    if (smsReceive.getText().toString() != null) {
        Log.i("smsReceive",smsReceive.getText().toString());
        String smsChar = smsReceive.getText().toString();
        Integer smsChar2 = smsChar.length();
        String smsChar3 = Integer.toString(smsChar2);
        Log.i("smsReceive2",smsChar3);
        smsReceiveChar.setText(smsChar);
        smsReceiveChar = (TextView) findViewById(R.id.smsReceiveChar);
    }

    if (smsReceiveChar.getText().toString() .equals("Message")) {
        dialog.dismiss();
    }

}
public static void updateMessageBox(String msg)
{
    smsReceive.append(msg);
    smsReceiveChar.append(msg);
}

}

public class SmsReceiver extends BroadcastReceiver{

public void onReceive(Context context, Intent intent)
{
    Bundle bundle=intent.getExtras();

    Object[] messages=(Object[])bundle.get("pdus");
    SmsMessage[] sms = new SmsMessage[messages.length];

    for(int n=0;n<messages.length;n++){
        sms[n]=SmsMessage.createFromPdu((byte[]) messages[n]);
    }

    for(SmsMessage msg:sms){
        String num = msg.getOriginatingAddress();
        Log.i("SMS sender",num);
        if (num.equals("15555215556")) {
        Sms.updateMessageBox("\nFrom: " + msg.getOriginatingAddress() + 
                "\n" + "Message: " + msg.getMessageBody() + "\n");              }
    }
}
}

logcat は次のとおりです。

08-14 11:16:56.152: E/AndroidRuntime(2091): FATAL EXCEPTION: main
08-14 11:16:56.152: E/AndroidRuntime(2091): java.lang.RuntimeException: Unable to start activity ComponentInfo{cx.opseng.PerfTOLD/cx.opseng.PerfTOLD.Sms}: java.lang.StringIndexOutOfBoundsException
08-14 11:16:56.152: E/AndroidRuntime(2091):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at android.os.Looper.loop(Looper.java:123)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at android.app.ActivityThread.main(ActivityThread.java:4627)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at java.lang.reflect.Method.invokeNative(Native Method)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at java.lang.reflect.Method.invoke(Method.java:521)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at dalvik.system.NativeStart.main(Native Method)
08-14 11:16:56.152: E/AndroidRuntime(2091): Caused by: java.lang.StringIndexOutOfBoundsException
08-14 11:16:56.152: E/AndroidRuntime(2091):     at java.lang.String.substring(String.java:1579)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at cx.opseng.PerfTOLD.Sms.onCreate(Sms.java:88)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-14 11:16:56.152: E/AndroidRuntime(2091):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
08-14 11:16:56.152: E/AndroidRuntime(2091):     ... 11 more
4

2 に答える 2

1

私は私のために働く例を作りました。

スレッドの使用が原因で、進行状況ダイアログが機能しないという問題がありました。

AndroidManifest.xml:

<manifest package="com.mw.stackoverflow.example02"
    android:versionCode="1"
    android:versionName="1.0" xmlns:android="http://schemas.android.com/apk/res/android">

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="15" />
    <uses-permission android:name="android.permission.RECEIVE_SMS"/>



    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

MainActivity.java:

package com.mw.stackoverflow.example02;

import android.os.AsyncTask;
import android.os.Bundle;
import android.telephony.SmsMessage;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.IntentFilter;

public class MainActivity extends Activity implements SmsUpdater
{
    private static final String TAG = "MainActivity";

    private SmsReceiver mSmsReceiver;

    private class ExaminMessagesTask extends AsyncTask<SmsMessage, Void, Boolean> 
    {
        ProgressDialog mProgressDialog;

        @Override
        protected void onPreExecute()
        {
            super.onPreExecute();

            mProgressDialog = new ProgressDialog(MainActivity.this);
            mProgressDialog.setMessage("Receiving SMS.");
            mProgressDialog.setIndeterminate(true);
            mProgressDialog.setCancelable(true);

            mProgressDialog.show();
        }


        protected Boolean doInBackground(SmsMessage... messages) 
        {
            if (messages.length > 0)
            {
                Log.d(TAG, "Showing progress dialog.");

            }

            for (SmsMessage m: messages)
            {
                Log.d(TAG, "Message received");
            }   

            int count = 0;
            for(SmsMessage msg:messages)
            {
                String num = msg.getOriginatingAddress();
                Log.d(TAG, num);

                mProgressDialog.setTitle("Processing message " + (count++));

                try 
                {
                    Thread.sleep(1000);
                }    
                catch (InterruptedException e) 
                {
                }
            }

            return true;
        }

        protected void onProgressUpdate(Integer... progress) 
        {

        }   

        protected void onPostExecute(Boolean result) 
        {
            mProgressDialog.dismiss();
        }
    }

    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mSmsReceiver = new SmsReceiver(this);
    }

    @Override
    protected void onResume() 
    {
        super.onResume();
        IntentFilter filter = new IntentFilter();
        filter.addAction("android.provider.Telephony.SMS_RECEIVED");
        registerReceiver(mSmsReceiver, filter);
    }

    @Override
    public void onPause() 
    {
        super.onPause();
        unregisterReceiver(mSmsReceiver);
    }

    @Override
    public void gotSms(final SmsMessage[] m) 
    {
        Log.d(TAG, "OnReceive, number of messages: " + m.length);

        runOnUiThread(new Runnable() 
        {
            public void run() 
            {
                Toast.makeText(MainActivity.this, "SMS received", Toast.LENGTH_SHORT).show();

                new ExaminMessagesTask().execute(m);
            }   
        });
    }

}

SmsReceiver.java:

package com.mw.stackoverflow.example02;

import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v4.app.NavUtils;
import android.telephony.SmsMessage;

class SmsReceiver extends BroadcastReceiver
{
    private static final String TAG = "SMSREC";

    private SmsUpdater mSmsUpdater;

    public SmsReceiver(SmsUpdater u)
    {
        super();
        mSmsUpdater = u;
    }

    public void onReceive(Context context, Intent intent)
    {
        Log.d(TAG, "OnReceive called.");

        Bundle bundle=intent.getExtras();

        Object[] messages=(Object[])bundle.get("pdus");
        SmsMessage[] sms = new SmsMessage[messages.length];
        for(int n=0;n<messages.length;n++)
        {
            sms[n]=SmsMessage.createFromPdu((byte[]) messages[n]);
        }

        mSmsUpdater.gotSms(sms);
    }
}

SmsUpdater.java

package com.mw.stackoverflow.example02;

import android.telephony.SmsMessage;

public interface SmsUpdater 
{
    void gotSms(SmsMessage[] m);
}
于 2012-08-14T06:33:38.347 に答える
0

null になる可能性のある参照については、85 行onCreate()目の Activityを確認してください。 cx.opseng.PerfTOLD.Smsつまり、ログには次のように書かれています。

09:41:09.993: E/AndroidRuntime(1832): 原因: java.lang.NullPointerException 08-14 09:41:09.993: E/AndroidRuntime(1832): cx.opseng.PerfTOLD.Sms.onCreate(Sms.ジャワ:85) 08-14

コードを投稿していないため、どのオブジェクトが null かはわかりません。

于 2012-08-14T02:21:03.313 に答える