0

我正在使用此代码在我的 Android 应用程序中打开一个画廊。

Intent intent = new Intent(Intent.ACTION_PICK, Media.EXTERNAL_CONTENT_URI);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivityForResult(intent, GALLERY);

它会打开画廊，但是当我从那里选择任何图像时，它也会关闭但不称为onActivityResult方法。

方法在这里....

protected void onActivityResult(int requestCode, int resultCode, Intent data) {     


    Log.v(TAG, "requestCode = "+requestCode+" resultCode = "+resultCode);
    Log.v(TAG, "inside onActivityResult");

    if (requestCode == GALLERY || requestCode == CAMERA) {
        if (resultCode == RESULT_OK) 
        {
            Log.v(TAG, "inside onActivityResult OK ");
            Log.v("log_tag", "onactivity result: " + requestCode);
            if(requestCode == CAMERA)
            {
                Log.v(TAG, "inside onActivityResult Camera");
                 file = getTempFile(this.getParent());  
                 try {  
                    m_bmOCRBitmap = Media.getBitmap(getContentResolver(), Uri.fromFile(file) );

                    FileOutputStream out = new FileOutputStream(file);

                    int width = m_bmOCRBitmap.getWidth();
                    int height = m_bmOCRBitmap.getHeight();
                    if(width>height)
                    {
                        calwidth = (int)((width * 250)/height);
                        calheight = 250;
                    }
                    else
                    {
                        calheight = (int)((height * 200)/width);
                        calwidth = 200;
                    }

                    Log.v(TAG, "calwidth = "+calwidth+" calheight = "+calheight);
                    bitmap = Bitmap.createScaledBitmap(m_bmOCRBitmap, calwidth, calheight, true);                                                                   

                    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
                    productImage.setImageBitmap(bitmap);

                    } catch (FileNotFoundException e) {  
                      e.printStackTrace();  
                    } catch (IOException e) {  
                      e.printStackTrace();  
                    }  
            }
            else if(requestCode == GALLERY)
            {
                Log.v(TAG, "inside onActivityResult GALARY ");
                String selectedImagePath = getPath(data.getData());
                file = new File(selectedImagePath);                                     
                m_bmOCRBitmap = BitmapFactory.decodeFile(selectedImagePath);
                Log.v("log_tag", "selectedImagePath:" + selectedImagePath + ":" );
                Log.v("log", "first image : "+m_bmOCRBitmap);
                try {
                    FileOutputStream out = new FileOutputStream(file);
                    int width = m_bmOCRBitmap.getWidth();
                    int height = m_bmOCRBitmap.getHeight();
                    if(width>height)
                    {
                        calwidth = (int)((width * 250)/height);
                        calheight = 250;
                    }
                    else
                    {
                        calheight = (int)((height * 200)/width);
                        calwidth = 200;
                    }
                    bitmap = Bitmap.createScaledBitmap(m_bmOCRBitmap, calwidth, calheight, true);                                                                   

                    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
                    productImage.setImageBitmap(bitmap);

                } catch (Exception e) {
                    Log.v("log_tag", "Exception: " + e.toString());
                }
            }                           
        }
    }       
    super.onActivityResult(requestCode, resultCode, data);
}

称为 Intent 时的警告是

01-04 12:21:06.434: D/PhoneWindow(367): couldn't save which view has focus because the focused view com.android.internal.policy.impl.PhoneWindow$DecorView@4054fb60 has no id.

请注意，我已将此活动作为 Tabgoup 活动的子活动开始。

请建议我。谢谢。

4

4 回答 4

5

onActivityResult()没有触发的可能性很多。

  • 如果您的请求代码 < 0
  • 如果你已经android:launchMode="singleInstance"在 Manifest.xml 中设置了
  • 如果您使用的是 Fragment，那么您必须调用 Fragment startActivityOnResult而不是 Activity
于 2013-01-04T07:18:47.570 回答
3

我像这样在父类中添加了这个方法

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    ProductImageActivity activity = (ProductImageActivity)getLocalActivityManager().getCurrentActivity();
    try {
        activity.onActivityResult(requestCode, resultCode, data,0);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

在我目前的课程中，我开始了这样的新意图。

Intent intent = new Intent(Intent.ACTION_PICK, Media.EXTERNAL_CONTENT_URI);
getParent().startActivityForResult(intent, GALLERY);
于 2013-01-05T05:05:01.640 回答
2

检查http://developer.android.com/reference/android/content/Intent.html#FLAG_ACTIVITY_NEW_TASK了解 Intent.FLAG_ACTIVITY_NEW_TASK 的行为。它用于独立活动。

This flag is generally used by activities that want to present a "launcher" style      behavior: they give the user a list of separate things that can be done, which otherwise run completely independently of the activity launching them.

删除该行后，您将在选择图像后调用 onActivityResult。

    Intent intent = new Intent(Intent.ACTION_PICK, Media.EXTERNAL_CONTENT_URI);
    startActivityForResult(intent, GALLERY);
于 2013-01-04T07:25:43.327 回答
0

试试这个并使用IntentLike this For Fetching Image FromGallery

        Intent intent = new Intent(Intent.ACTION_PICK);
        intent.setType("image/*");
        startActivityForResult(intent, GALLERY);

或者

           Intent intent = new Intent(Intent.ACTION_PICK,
                    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        startActivityForResult(intent, GALLERY);
于 2013-01-04T07:08:53.913 回答