画廊 OnActivityResult 在 TabActivity 中不起作用

Question

我的代码有问题，我正在尝试从图库中获取图像并将其显示在我的 xml 布局中 （问题是当我单击按钮时它会转到图库但当我选择图片时它只是转到另一个标签）

1) 创建标签的主类

public class MainUser extends TabActivit 
  .....

TabSpec tabSpec10 = mTabHost.newTabSpec("tab_test1");
        tabSpec10.setIndicator("Report incident ");
        Context ctx10 = this.getApplicationContext();
        Intent i10 = new Intent(ctx10, ucrimereport.class);
        tabSpec10.setContent(i10);
        mTabHost.addTab(tabSpec10);

2）这是我正在制作和调用画廊的课程

public class ucrimereport extends Activity implements OnClickListener,OnItemSelectedListener {
    private static final int IMAGE = 1;

@Override   

    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ureport);
.........
         gallary = (ImageButton)findViewById(R.id.sdpic_button);

gallary.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            // gallary
            Intent gallery = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI);
            startActivityForResult(gallery, IMAGE);

        }
    });

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

      if(resultCode==RESULT_OK && requestCode==IMAGE){
       Uri selectedImage=data.getData();
       String path=getPath(selectedImage);

       Bitmap bitmapImage=BitmapFactory.decodeFile(path);
       //ImageView image=(ImageView)findViewById(R.id.image);
       image.setImageBitmap(bitmapImage);

      }
    }

    public String getPath(Uri uri){
      String[] filePathColumn={MediaStore.Images.Media.DATA};

      Cursor cursor=getContentResolver().query(uri, filePathColumn, null, null, null);
      cursor.moveToFirst();
      int columnIndex=cursor.getColumnIndex(filePathColumn[0]);

      return cursor.getString(columnIndex);
    }

Answer 1

请尝试该代码。

public class ImageGalleryDemoActivity extends Activity {    
    private static int RESULT_LOAD_IMAGE = 1;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture);
        buttonLoadImage.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {

                Intent i = new Intent(
                        Intent.ACTION_PICK,
                        android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

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

        if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
            Uri selectedImage = data.getData();
            String[] filePathColumn = { MediaStore.Images.Media.DATA };

            Cursor cursor = getContentResolver().query(selectedImage,
                    filePathColumn, null, null, null);
            cursor.moveToFirst();

            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
            String picturePath = cursor.getString(columnIndex);
            cursor.close();

            ImageView imageView = (ImageView) findViewById(R.id.imgView);
            imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
        }
    }
}