我正在开始请求图片选择：
Intent intent = new Intent();
intent.setType( "image/*" );
intent.setAction( Intent.ACTION_GET_CONTENT );
startActivityForResult( Intent.createChooser( intent, "Choose"), PHOTO_GALLERY );
将数据恢复到onActivityResult：
if( resultCode == Activity.RESULT_OK && requestCode == PHOTO_GALLERY )
{
U.log( data.getData() );
Bitmap bm = ... // built from the getData() Uri
this.postImagePreview.setImageBitmap( bm );
}
当我启动Intent时，我会看到一些文件夹，例如sdcard，Drop Box，MyCameraApp等。
如果我从sdcard中选择了一张图片，当我加载预览时，它就是完全错误的图像。其他文件夹似乎没有给我这个问题。
有谁知道为什么它会让我选择一张图片，然后把Uri给我另一张图片？
编辑：以下是一些示例记录的getData()：
好：
content://com.google.android.gallery3d.provider/picasa/item/5668377679792530210
为：
content://media/external/images/media/28
编辑：从图库的sdcard文件夹中挑选时，我仍然遇到问题。
这是我在onActivityResult中所做的更多扩展：
// cursor
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = mContext.getContentResolver().query( selectedImage, filePathColumn, null, null, null );
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex( filePathColumn[0] );
String filePath = cursor.getString( columnIndex );
cursor.close();
// Cursor: /mnt/sdcard/Pic.jpg : /mnt/sdcard/Pic.jpg
U.log( "Cursor: " + filePath + " : " + Uri.parse( filePath ) );
// "regular"
// Regular: content://media/external/images/media/28 : content://media/external/images/media/28
U.log( "Regular: " + data.getDataString() + " : " + Uri.parse( data.getDataString() ) );
// Regular 2: content://media/external/images/media/28 : content://media/external/images/media/28
U.log( "Regular 2: " + data.getData() + " : " + data.getData() );
mPostImagePreview.setImageBitmap( BitmapFactory.decodeFile( filePath ) );
mPostImagePreview.setVisibility( View.VISIBLE );
他们仍然设置错误的图像。如果我进入图库，请长按图像，然后查看其详细信息：
TItle: Pic
Time: May 2, 2012
Width: 720
Height: 1280
Orientation: 0
File size: 757KB
Maker: Abso Camera
Model: Inspire 4G
Path: /mnt/sdcard/Pic.jpg
因此，图库告诉我路径与拾取操作相同，并且图库正确渲染它。那么，如果我从onActivityResult设置它，它为什么不渲染？
此外，这是我现在用于解雇Intent的代码：
private void selectPhoto()
{
Intent intent = new Intent( Intent.ACTION_GET_CONTENT );
intent.setType( "image/*" );
( ( Activity )mContext ).startActivityForResult( Intent.createChooser( intent, "Select Picture" ), PHOTO_GALLERY );
}
答案 0 :(得分：5)
这是打开图库的代码。然而，这与你所做的一样。另请参阅我用于检索所选图像的onActivityResult代码。
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"),
PHOTO_GALLERY);
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case PHOTO_GALLERY:
if (resultCode == RESULT_OK) {
Uri selectedImageUri = Uri.parse(data.getDataString());
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(
getApplicationContext().getContentResolver(),
selectedImageUri);
this.postImagePreview.setImageBitmap( bitmap);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
}
}
}
答案 1 :(得分：4)
有时，图库应用中的缩略图可能会过时并显示不同图像的缩略图。重复使用图像ID时会发生这种情况，例如，当图像被删除并使用相同的ID添加新图像时。
管理应用＆gt;图库＆gt;清除数据可以解决这个问题。
答案 2 :(得分：3)
private static int RESULT_LOAD_IMAGE = 1;
Intent i = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
OnActivityResult
@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));
}
}
答案 3 :(得分：3)
尝试这个
//Put this code on some event
Intent intent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, REQUEST_CODE);
// When above event fire then its comes to this
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode==RESULT_OK && requestCode==1){
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]);
filePath = cursor.getString(columnIndex);
cursor.close();
// Use it as per recruitment
actualBitmap =BitmapFactory.decodeFile(filePath);
}
}
答案 4 :(得分：0)
试试这个，
public class SelectPhotoActivity extends Activity {
private static final int SELECT_PICTURE = 1;
private String selectedImagePath="";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivityForResult(intent, SELECT_PICTURE);
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE)
{
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
// here you can set the image
}
}
}
}