Dont Bild in Bild Ansicht zu erhalten, nachdem Bild aus der Galerie Auswahl

Question

ich weiß nicht, warum es nicht in meinem Fall funktioniert und funktionieren alle anderen ein

public class MainActivity extends Activity { 
    private static final int imagess = 1; 
    Button uploadimage, loadimage; 
    ImageView selectimage, showimage; 

    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     uploadimage = (Button) findViewById(R.id.uploadimage); 
     loadimage = (Button) findViewById(R.id.loadimage); 
     selectimage = (ImageView) findViewById(R.id.imageUpToLoad); 
     showimage = (ImageView) findViewById(R.id.Imagedownload); 


     selectimage.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       Intent galleryintent = new Intent(Intent.ACTION_PICK , MediaStore.Images.Media.EXTERNAL_CONTENT_URI); 
       startActivityForResult(galleryintent , imagess); 
      } 
     }); 
    } 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 
     if (requestCode == imagess && requestCode == RESULT_OK && data != null) { 
      Uri imageuri = data.getData(); 
      selectimage.setImageURI(imageuri); 

und dies ist xml-Code, der auch perfekt. Dies ermöglicht mir den Zugriff auf die Galerie, aber wenn ich das Bild aus der Galerie auswähle, wird es in der Bildansicht nicht angezeigt. weiß nicht, warum es nicht

<ImageView 
     android:layout_width="150dp" 
     android:layout_height="150dp" 
     android:id="@+id/imageUpToLoad" 
     android:layout_gravity="center_horizontal" 
     /> 

    <Button 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="upload image" 
     android:id="@+id/uploadimage" 
     android:layout_below="@+id/selectimage" 
     android:layout_alignParentStart="true" 
     android:layout_alignEnd="@+id/selectimage" /> 

    <ImageView 
     android:layout_width="150dp" 
     android:layout_height="150dp" 
     android:id="@+id/Imagedownload" 
     android:layout_gravity="center_horizontal" /> 

    <Button 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="Load image" 
     android:id="@+id/loadimage" 
     android:layout_below="@+id/imageView2" 
     android:layout_alignParentStart="true" 
     android:layout_alignEnd="@+id/imageView2" /> 

Answer 1

Arbeits Bitte bearbeiten onActivityResult

if (requestCode == imagess && requestCode == RESULT_OK && data != null) { 
     Uri imageuri = data.getData(); 
     String[] projection = { MediaStore.Images.Media.DATA }; 
     Cursor cursor = managedQuery(imageuri, projection, null, null, null); 
     int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
     cursor.moveToFirst(); 
     String picturePath = cursor.getString(columnIndex); 
     cursor.close(); 
     selectimage.setImageBitmap(BitmapFactory.decodeFile(picturePath)); 
} 

Answer 2

bereits. Ändern Sie Ihre onActivityResult in diesem

protected void onActivityResult(int requestCode, int resultCode, Intent data) 
{ 
    super.onActivityResult(requestCode, resultCode, data); 
    if (requestCode == imagess && requestCode == RESULT_OK && data != null) { 
     Uri imageuri = data.getData(); 
     try 
     { 
      Bitmap bitmapImage = decodeBitmap(imageuri); 
     } 
     catch (FileNotFoundException e) 
     { 
      e.printStackTrace(); 
     } 
     selectimage.setImageBitmap(bitmapImage); 
} 

Und fügen Sie diese Methode

public Bitmap decodeBitmap(Uri selectedImage) throws FileNotFoundException { 
    BitmapFactory.Options o = new BitmapFactory.Options(); 
    o.inJustDecodeBounds = true; 
    BitmapFactory.decodeStream(getContentResolver().openInputStream(selectedImage), null, o); 

    final int REQUIRED_SIZE = 100; 

    int width_tmp = o.outWidth, height_tmp = o.outHeight; 
    int scale = 1; 
    while (true) { 
     if (width_tmp/2 < REQUIRED_SIZE || height_tmp/2 < REQUIRED_SIZE) { 
      break; 
     } 
     width_tmp /= 2; 
     height_tmp /= 2; 
     scale *= 2; 
    } 

    BitmapFactory.Options o2 = new BitmapFactory.Options(); 
    o2.inSampleSize = scale; 
    return BitmapFactory.decodeStream(getContentResolver().openInputStream(selectedImage), null, o2); 
}