Question

下面是一些有点工作的代码......我目前在屏幕上有2个ImageViews，下面各有一个按钮。单击该按钮时，相机功能将打开。我的目标是一个图像视图下方的按钮改变了该图像视图，让我能够然后单击另一个按钮来改变另一个。然而，在我改变一个时，它们都变成了同一张照片。我之前曾尝试过几个'if'语句，将每个语句初始化为一个名为“currentImage”的变量，但无济于事。

有什么想法吗？

public class NowThen extends Activity {

Bitmap photo;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.nowthen);
}

public void nowPhoto (View view){
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
startActivityForResult(intent,0);   
}

public void thenPhoto (View view){
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
startActivityForResult(intent,0);   
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);

 if (requestCode == 0 && resultCode == RESULT_OK) {
    if (data != null) {

        photo = (Bitmap) data.getExtras().get("data");
        ImageView nowImage = (ImageView) findViewById(R.id.nowImage);
        ImageView thenImage = (ImageView) findViewById(R.id.thenImage);

        nowImage.setImageBitmap(photo); 
        thenImage.setImageBitmap(photo);

        Log.d("camera ---- > ", "" + data.getExtras().get("data"));
    }
 }
}
}

Answer 1

您的代码是正确的，除非您使用相同的requestCode 0启动intent。因此，在onActivityResult（）块中调用相同的块。

startActivityForResult(intent,0);//for first button
startActivityForResult(intent,1);//for second button

现在在if或switch语句中检查onAcitivityResult（）代码中的requestCode。

Answer 2

将您的thenPhoto代码更改为：

public void thenPhoto (View view){
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
startActivityForResult(intent,1);   
}

将onActivityResult更改为：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);

 if (requestCode == 0 && resultCode == RESULT_OK) {
    if (data != null) {

        photo = (Bitmap) data.getExtras().get("data");
        ImageView nowImage = (ImageView) findViewById(R.id.nowImage);

        nowImage.setImageBitmap(photo);

        Log.d("camera ---- > ", "" + data.getExtras().get("data"));
    }
 } else if (requestCode == 1 && resultCode == RESULT_OK) {
    if (data != null) {

        photo = (Bitmap) data.getExtras().get("data");
        ImageView thenImage = (ImageView) findViewById(R.id.thenImage);

        thenImage.setImageBitmap(photo);

        Log.d("camera ---- > ", "" + data.getExtras().get("data"));
    }
 }
}
}

从Android相机拍摄照片以更改2个ImageViews

2 个答案: