无法将图像加载到imageview

Question

我到处搜索，但似乎没有找到解决方案。

在我的应用程序，我有以下布局：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".MainActivity" > 

    <ImageView 
     android:id="@+id/imageView1" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_above="@+id/button1" 
     android:layout_marginTop="68dp" /> 

    <Button 
     android:id="@+id/button1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true" 
     android:layout_marginLeft="57dp" 
     android:layout_marginTop="176dp" 
     android:text="Load from Gallery" /> 

</RelativeLayout> 

在按钮的点击我显示一个文件使用achooser库项目从GitHub选择。 MainActivity的代码是：

public class MainActivity extends SherlockActivity { 

    private static final int REQUEST_CODE = 6384; 
    Uri uri = null; 
    String path = ""; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     Button chooseFile = (Button) findViewById(R.id.button1); 
     chooseFile.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       showChooser(); 
       ImageView MyImageView = (ImageView) findViewById(R.id.imageView1); 
       Drawable d = Drawable.createFromPath(path); 
       MyImageView.setImageDrawable(d); 
       MyImageView.refreshDrawableState(); 

      } 
     }); 

    } 

    private void showChooser() { 
     // Use the GET_CONTENT intent from the utility class 
     Intent target = FileUtils.createGetContentIntent(); 
     // Create the chooser Intent 
     Intent intent = Intent.createChooser(target, "Choose Image"); 
     try { 
      startActivityForResult(intent, REQUEST_CODE); 
     } catch (ActivityNotFoundException e) { 
      // The reason for the existence of aFileChooser 
     } 
    } 

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

     switch (requestCode) { 
     case REQUEST_CODE: 
      // If the file selection was successful 
      if (resultCode == RESULT_OK) { 
       if (data != null) { 
        // Get the URI of the selected file 
        uri = data.getData(); 

        try { 
         // Create a file instance from the URI 
         final File file = FileUtils.getFile(uri); 
         path = file.getAbsolutePath(); 
        } catch (Exception e) { 
         Log.e("FileSelectorTestActivity", "File select error", 
           e); 
        } 
       } 
      } 
      break; 
     } 
     super.onActivityResult(requestCode, resultCode, data); 
    } 
} 

选择图像时，什么都不会发生。我的意思是既没有例外，也没有加载图像。在logcat中，我看到：

Answer 1

试试这个：

public class MainActivity extends SherlockActivity { 

    private static final int REQUEST_CODE = 6384; 
    Uri uri = null; 
    String path = ""; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     Button chooseFile = (Button) findViewById(R.id.button1); 
     chooseFile.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       showChooser(); 
      } 
     }); 

    } 

    private void showChooser() { 
     // Use the GET_CONTENT intent from the utility class 
     Intent target = FileUtils.createGetContentIntent(); 
     // Create the chooser Intent 
     Intent intent = Intent.createChooser(target, "Choose Image"); 
     try { 
      startActivityForResult(intent, REQUEST_CODE); 
     } catch (ActivityNotFoundException e) { 
      // The reason for the existence of aFileChooser 
     } 
    } 

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

     switch (requestCode) { 
     case REQUEST_CODE: 
      // If the file selection was successful 
      if (resultCode == RESULT_OK) { 
       if (data != null) { 
        // Get the URI of the selected file 
        uri = data.getData(); 

        try { 
         // Create a file instance from the URI 
         final File file = FileUtils.getFile(uri); 
         path = file.getAbsolutePath(); 
        } catch (Exception e) { 
         Log.e("FileSelectorTestActivity", "File select error", 
           e); 
        } 

       ImageView MyImageView = (ImageView) findViewById(R.id.imageView1); 
       Drawable d = Drawable.createFromPath(path); 
       MyImageView.setImageDrawable(d); 
       MyImageView.refreshDrawableState(); 

       } 
      } 
      break; 
     } 
     super.onActivityResult(requestCode, resultCode, data); 
    } 
} 

你可能得到的路径之前设置的图像的路径。