1

ボタンをクリックしてキャプチャした画像を画面に表示するとカメラを開こうとしていますが、ボタンをクリックしても何も起こりません.カメラは開きません.以下は私のJavaプログラムのコードで、対応するxmlファイルです.

私のクラス：

package com.example.splashscreen;

import java.io.IOException;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;

public class CameraappActivity extends Activity implements View.OnClickListener{
    ImageButton imb1;
    ImageView imv1;
    Button b1;
    final static int cameradata=1;
    Bitmap bmp;
    Intent i1;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.cameraapp);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.cameraapp, menu);
        initialise();
        imb1.setOnClickListener(this);
        b1.setOnClickListener(this);
        return true;
    }

    private void initialise() {
        // TODO Auto-generated method stub
        imv1=(ImageView)findViewById(R.id.imview1);
        imb1=(ImageButton)findViewById(R.id.imb2);
        System.out.println("Hello");
        b1=(Button)findViewById(R.id.setw);

    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        switch(v.getId())
        {
        case R.id.imb2:i1=new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        System.out.println("entered");
        startActivityForResult(i1, cameradata);
            break;
        case R.id.setw:
            try{
            getApplicationContext().setWallpaper(bmp);}
            catch(IOException e){
                e.printStackTrace();
            }
            break;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);
        System.out.println("Hi1");
        if(resultCode==RESULT_OK)
        {
            System.out.println("Hi2");
            Bundle b1=data.getExtras();
            bmp=(Bitmap)b1.get("data");
            imv1.setImageBitmap(bmp);
        }

    }


   }

私のXML：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".CameraappActivity" >

    <ImageButton
        android:id="@+id/imb2"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_above="@+id/setw"
        android:layout_alignLeft="@+id/setw"
        android:layout_marginBottom="24dp"
        android:src="@drawable/sunset1" 
        android:contentDescription="Take picture"/>

    <ImageView
        android:id="@+id/imview1"
        android:layout_width="200dp"
        android:layout_height="300dp"
        android:layout_above="@+id/imb2"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="96dp"
        android:src="@drawable/ic_launcher" />

    <Button
        android:id="@+id/setw"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="40dp"
        android:text="@string/sew" />

</RelativeLayout>
4

2 に答える 2

0

クリック リスナーが適用されるため、OncreateOptionsMenu ではなく onCreate メソッドで初期化メソッドを呼び出します。

于 2013-09-12T11:59:18.123 に答える
0

これは私と一緒に魅力のように機能しています

private String selectedImagePath = "";
    final private int PICK_IMAGE = 1;
    final private int CAPTURE_IMAGE = 2;

public Uri setImageUri() {
        // Store image in dcim
        File file = new File(Environment.getExternalStorageDirectory() + "/DCIM/", "image" + new Date().getTime() + ".png");
        Uri imgUri = Uri.fromFile(file);
        this.imgPath = file.getAbsolutePath();
        return imgUri;
    }


    public String getImagePath() {
        return imgPath;
    }

btnGallery.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setType("image/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);
                startActivityForResult(Intent.createChooser(intent, ""), PICK_IMAGE);

            }
        });

        btnCapture.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                intent.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri());
                startActivityForResult(intent, CAPTURE_IMAGE);
            }
        });

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode != Activity.RESULT_CANCELED) {
            if (requestCode == PICK_IMAGE) {
                selectedImagePath = getAbsolutePath(data.getData());
                imgUser.setImageBitmap(decodeFile(selectedImagePath));
            } else if (requestCode == CAPTURE_IMAGE) {
                selectedImagePath = getImagePath();
                imgUser.setImageBitmap(decodeFile(selectedImagePath));
            } else {
                super.onActivityResult(requestCode, resultCode, data);
            }
        }

    }


public Bitmap decodeFile(String path) {
        try {
            // Decode image size
            BitmapFactory.Options o = new BitmapFactory.Options();
            o.inJustDecodeBounds = true;
            BitmapFactory.decodeFile(path, o);
            // The new size we want to scale to
            final int REQUIRED_SIZE = 70;

            // Find the correct scale value. It should be the power of 2.
            int scale = 1;
            while (o.outWidth / scale / 2 >= REQUIRED_SIZE && o.outHeight / scale / 2 >= REQUIRED_SIZE)
                scale *= 2;

            // Decode with inSampleSize
            BitmapFactory.Options o2 = new BitmapFactory.Options();
            o2.inSampleSize = scale;
            return BitmapFactory.decodeFile(path, o2);
        } catch (Throwable e) {
            e.printStackTrace();
        }
        return null;

    }

public String getAbsolutePath(Uri uri) {
        String[] projection = { MediaColumns.DATA };
        @SuppressWarnings("deprecation")
        Cursor cursor = managedQuery(uri, projection, null, null, null);
        if (cursor != null) {
            int column_index = cursor.getColumnIndexOrThrow(MediaColumns.DATA);
            cursor.moveToFirst();
            return cursor.getString(column_index);
        } else
            return null;
    }
于 2013-09-12T11:56:16.593 に答える