Question

我的代码出了问题，我试图从图库中获取图像并在我的xml布局上显示（问题是当我点击按钮时它会进入图库但当我选择图片时它只适用于另一个标签）

1）我的主要类创建标签

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）这是我正在制作并调用画廊的课程

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));
        }
    }
}

Gallery OnActivityResult无法在TabActivity中使用

1 个答案: