在第一次运行后调用时,finish()不关闭活动

Question

我有三个活动

• MessagesAttachPhotoActivity
• MessageGalleryFolderSelectorActivity
• ImagePickerActivity

MessagesAttachPhotoActivity呼吁MessageGalleryFolderSelectorActivity有startActivityForResult().

MessageGalleryFolderSelectorActivity 活动显示手机上的照片文件夹,一个选择文件夹.

ImagePickerActivity然后调用setActivityForResult().一旦选择了图像ImagePickerActivity,它就会被传递回MessagesAttachPhotoActivityvia MessageGalleryFolderSelectorActivity.

当我第一次运行应用程序时,一切正常.但是,如果我之后尝试再次选择图像,MessageGalleryFolderSelectorActivity则不会在之后关闭setResult().

我已经打过电话finish(),this.finish(),((Activity)getApplicationContext()).finish(),并super.onBackPressed()没有成功.

为什么活动不会在连续运行中关闭？

这是我的代码:

调用MessageGalleryFolderSelectorActivity:

Intent intent;
Bundle arguments = new Bundle();

Bundle bundle;
intent = new Intent(this, MessageGalleryFolderSelectorActivity.class);
bundle = new Bundle();
bundle.putInt(Constants.INTENT_EXTRA_LIMIT, Constants.IMAGES_SELECT_LIMIT);
bundle.putInt("Request", MessageThread.MessageType.IMAGE);
intent.putExtras(bundle);
startActivityForResult(intent, MessageThread.MessageType.IMAGE);

ImagePickerActivity:

imagesIntent.putExtra(ImagePickerActivity.INTENT_EXTRA_MODE,
                      ImagePickerActivity.MODE_MULTIPLE);
imagesIntent.putExtra(ImagePickerActivity.INTENT_EXTRA_LIMIT, 10);
imagesIntent.putExtra(ImagePickerActivity.INTENT_EXTRA_SHOW_CAMERA, false);
imagesIntent.putExtra(ImagePickerActivity.INTENT_EXTRA_ALBUM,album);

//imagesIntent.putExtra(ImagePickerActivity.INTENT_EXTRA_SELECTED_IMAGES, images);
startActivityForResult(imagesIntent, MessageThread.MessageType.IMAGE);

将数据传递回MessageGalleryFolderSelectorActivity:

Intent data = new Intent();
data.putParcelableArrayListExtra
     (ImagePickerActivity.INTENT_EXTRA_SELECTED_IMAGES, selectedImages);               
data.putExtra(ImagePickerActivity.INTENT_EXTRA_ALBUM,album);
setResult(RESULT_OK, data);
finish();
return true;

尝试将数据传递回初始调用活动,但此活动不会关闭MessageGalleryFolderSelectorActivity:

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

    if (resultCode == RESULT_OK) {
        ArrayList<Image> selectedImages = data.getParcelableArrayListExtra
            (ImagePickerActivity.INTENT_EXTRA_SELECTED_IMAGES);

        String album = data.getStringExtra(ImagePickerActivity.INTENT_EXTRA_ALBUM);

        Intent intent = new Intent();
        intent.putExtra(ImagePickerActivity.INTENT_EXTRA_ALBUM, album);
        intent.putParcelableArrayListExtra
          (ImagePickerActivity.INTENT_EXTRA_SELECTED_IMAGES, selectedImages);

         setResult(Activity.RESULT_OK, intent);

         this.finish();
         return;
    } else if (resultCode == RESULT_CANCELED) {

    }
}

Answer 1

我在这样的三项活动中尝试了与你相同的逻辑

活动A

    public class A extends AppCompatActivity {

    private static final int BCODE = 100;
    private String Tag="A Activity";
    Button triggerButton;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        triggerButton= (Button) findViewById(R.id.triggerButton);
        triggerButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent;
                Bundle arguments = new Bundle();
                intent = new Intent(A.this, B.class);
                intent.putExtras(arguments);
                startActivityForResult(intent, BCODE);
            }
        });

    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode==BCODE){
            if(resultCode==RESULT_OK){
                Log.e(Tag,"succes");
            }
        }
    }
}

从活动 A 开始，我通过使用 startActivityForResult 传递意图来启动活动 B

从活动 B 开始，我再次做同样的事情

public class B extends AppCompatActivity {

    private static final int CCODE =200 ;
    private String Tag="Activity B";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_b);
        Intent intent;
        Bundle arguments = new Bundle();
        intent = new Intent(this, C.class);
        intent.putExtras(arguments);
        startActivityForResult(intent, CCODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode==CCODE){
            if(resultCode==RESULT_OK){
                Log.e(Tag,"suceess");
                setResult(RESULT_OK,new Intent());
                finish();
            }
        }
    }
}

在活动 C 中，我刚刚在设置结果后完成活动

public class C extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_c);
        setResult(RESULT_OK,new Intent());
        finish();
    }
}

当活动 C 完成时，操作系统将恢复活动 B 并调用 onActivityResult()。在活动 B 的 onActivityResult 中，我正在设置结果并完成活动。然后操作系统将恢复活动 B 并调用活动 AI 的 onActivity 结果，此场景已尝试多次对我来说工作得很好。