андроид просмотр изображений сбой выдача ошибки результата

Question

Я хочу просмотреть изображение, а затем отобразить путь к моему изображению в своем текстовом редакторе. Он работает, пока я не нажму на изображение, из которого я хочу паать, и я получу следующую ошибку:

12-24 14:18:58.377: E/AndroidRuntime(5606): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://media/external/images/media/72 }} to activity {ianco.test.andrei/ianco.test.andrei.BrowsePicture}: java.lang.NullPointerException 
    12-24 14:19:40.537: E/AndroidRuntime(5892): FATAL EXCEPTION: main 
    12-24 14:19:40.537: E/AndroidRuntime(5892): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://media/external/images/media/73 }} to activity {ianco.test.andrei/ianco.test.andrei.BrowsePicture}: java.lang.NullPointerException         
     12-24 14:19:40.537: E/AndroidRuntime(5892): at android.app.ActivityThread.deliverResults(ActivityThread.java:2553) 
     12-24 14:19:40.537: E/AndroidRuntime(5892): at android.app.ActivityThread.handleSendResult(ActivityThread.java:2595) 
     12-24 14:19:40.537: E/AndroidRuntime(5892): at android.app.ActivityThread.access$2000(ActivityThread.java:121) 
    12-24 14:19:40.537: E/AndroidRuntime(5892): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:973) 
    12-24 14:19:40.537: E/AndroidRuntime(5892):  at android.os.Handler.dispatchMessage(Handler.java:99) 
    12-24 14:19:40.537: E/AndroidRuntime(5892):  at android.os.Looper.loop(Looper.java:130) 
    12-24 14:19:40.537: E/AndroidRuntime(5892):  at android.app.ActivityThread.main(ActivityThread.java:3701) 
    12-24 14:19:40.537: E/AndroidRuntime(5892):  at java.lang.reflect.Method.invokeNative(Native Method) 
    12-24 14:19:40.537: E/AndroidRuntime(5892):  at java.lang.reflect.Method.invoke(Method.java:507) 
    12-24 14:19:40.537: E/AndroidRuntime(5892):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866) 
    12-24 14:19:40.537: E/AndroidRuntime(5892):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:624) 
    12-24 14:19:40.537: E/AndroidRuntime(5892): at dalvik.system.NativeStart.main(Native Method) 
    12-24 14:19:40.537: E/AndroidRuntime(5892): Caused by: java.lang.NullPointerException 
    12-24 14:19:40.537: E/AndroidRuntime(5892): at ianco.test.andrei.BrowsePicture.onActivityResult(BrowsePicture.java:57) 
    12-24 14:19:40.537: E/AndroidRuntime(5892): at android.app.Activity.dispatchActivityResult(Activity.java:3908) 
    12-24 14:19:40.537: E/AndroidRuntime(5892): at android.app.ActivityThread.deliverResults(ActivityThread.java:2549) 
    12-24 14:19:40.537: E/AndroidRuntime(5892): ... 11 more 

my .java is: `package ianco.test.andrei;

   import android.app.Activity; 
       import android.content.Intent; 
       import android.database.Cursor; 
       import android.net.Uri; 
       import android.os.Bundle; 
       import android.provider.MediaStore; 
       import android.view.View; 
       import android.view.View.OnClickListener; 
       import android.widget.Button; 
       import android.widget.EditText; 
       import android.util.Log; 
      public class BrowsePicture extends Activity { 

//YOU CAN EDIT THIS TO WHATEVER YOU WANT 
      private static final int SELECT_PICTURE = 1; 

      private String filePath; 
      public EditText myText; 

      public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

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

       public void onClick(View arg0) { 

      // in onCreate or any event where your want the user to 
      // select a file 
      Intent intent = new Intent(); 
      intent.setType("image/*"); 
      intent.setAction(Intent.ACTION_GET_CONTENT); 
      startActivityForResult(Intent.createChooser(intent, 
        "Select Picture"), SELECT_PICTURE); 
     } 
    }); 
} 

//UPDATED 
        public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    if (resultCode == RESULT_OK) { 
     if (requestCode == SELECT_PICTURE) { 


      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); 
      Log.i("the path of image is", filePath); 
      myText.setText(filePath); 
      cursor.close(); 
     } 

    } } 
}` 

Answer 1

это в вашем на методе клик:

File dir = new File(Environment.getExternalStorageDirectory().toString() + "/sdcard/yourfolder"); 
Log.d("File path ",dir.getPath()); 
String dirPath = dir.getAbsolutePath(); 
if(dir.exists()&&dir.isDirectory()) { 
    Intent intent = new Intent(Intent.ACTION_VIEW); 
    // tells your intent to get the contents 
    // opens the URI for your image directory on your sdcard 
    //its upto you what data you want image or video. 
    intent.setType("image/*"); 
    // intent.setType("video/*"); 
    intent.setData(Uri.fromFile(dir)); 
    // intent.setType("media/*"); 
    // intent. 
    startActivityForResult(intent, 1); 
} else { 
    Toast.makeText(this, "No file exist to show", Toast.LENGTH_SHORT).show(); 
} 

Это ваш метод на ActivityResult:

protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    // TODO Auto-generated method stub 
    super.onActivityResult(requestCode, resultCode, data); 

    if (requestCode == 1) { 
     if (data == null) { 
      Toast.makeText(this, "No image selected", Toast.LENGTH_SHORT).show(); 
      //finish(); 
     } else { 
      Uri selectedImageUri = data.getData(); 

      //MEDIA GALLERY 
      String selectedImagePath = selectedImageUri.getPath(); 

      if (selectedImagePath != null) { 
       Intent intent = new Intent(); 
       intent.setAction(Intent.ACTION_VIEW); 
       intent.setData(selectedImageUri); 
       startActivity(intent); 
      } else { 
       Toast.makeText(this, "Image path not correct", Toast.LENGTH_SHORT).show(); 
      } 
     } 
    } 
}