使用整个站点中可用的几个代码,我构建了一个小型应用程序,该应用程序将调用 Gallery 意图,并在选择图像时返回路径。
public class SDCardImagesActivity extends Activity {
final int REQ_CODE_PICK_IMAGE= 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.header);
Intent i = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, REQ_CODE_PICK_IMAGE);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode) {
case REQ_CODE_PICK_IMAGE:
if(resultCode == RESULT_OK){
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 filePath = cursor.getString(columnIndex);
cursor.close();
Bitmap yourSelectedImage = BitmapFactory.decodeFile(filePath);
Toast.makeText(SDCardImagesActivity.this, "selected", 2000).show();
}
}
}
}
但是当我运行这个程序时,我得到了以下异常
08-09 15:12:53.191: ERROR/AndroidRuntime(26694): Caused by: android.database.CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0
有人可以帮我吗。提前致谢。