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POCan't upload image from Gallery
 

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    <p>I want to let the user either choose a picture from Gallery or take a picture using Camera when clicking on the image view. I followed several tutorials online, and here is my attempt:</p> <pre><code>import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.ImageView; import android.widget.Toast; public class UploadImageActivity extends Activity { private final int CAMERA_PICTURE = 1; private final int GALLERY_PICTURE = 2; private ImageView userPictureImageView; private Intent pictureActionIntent = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); userPictureImageView = (ImageView) findViewById(R.id.image_view); userPictureImageView.setOnClickListener(new OnClickListener() { public void onClick(View v) { startDialog(); } }); } protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == GALLERY_PICTURE) { Uri uri = data.getData(); if (uri != null) { // User had pick an image. Cursor cursor = getContentResolver().query(uri, new String[] { android.provider.MediaStore.Images.ImageColumns.DATA }, null, null, null); cursor.moveToFirst(); // Link to the image final String imageFilePath = cursor.getString(0); File photos = new File(imageFilePath); Bitmap b = decodeFile(photos); b = Bitmap.createScaledBitmap(b, 150, 150, true); userPictureImageView.setImageBitmap(b); cursor.close(); } else { Toast toast = Toast.makeText(this, "No Image is selected.", Toast.LENGTH_LONG); toast.show(); } } else if (requestCode == CAMERA_PICTURE) { if (data.getExtras() != null) { // here is the image from camera Bitmap bitmap = (Bitmap) data.getExtras().get("data"); userPictureImageView.setImageBitmap(bitmap); } } } private Bitmap decodeFile(File f) { try { // decode image size BitmapFactory.Options o = new BitmapFactory.Options(); o.inJustDecodeBounds = true; BitmapFactory.decodeStream(new FileInputStream(f), null, o); // Find the correct scale value. It should be the power of 2. final int REQUIRED_SIZE = 70; int width_tmp = o.outWidth, height_tmp = o.outHeight; int scale = 1; while (true) { if (width_tmp / 2 &lt; REQUIRED_SIZE || height_tmp / 2 &lt; REQUIRED_SIZE) break; width_tmp /= 2; height_tmp /= 2; scale++; } // decode with inSampleSize BitmapFactory.Options o2 = new BitmapFactory.Options(); o2.inSampleSize = scale; return BitmapFactory.decodeStream(new FileInputStream(f), null, o2); } catch (FileNotFoundException e) { } return null; } private void startDialog() { AlertDialog.Builder myAlertDialog = new AlertDialog.Builder(this); myAlertDialog.setTitle("Upload Pictures Option"); myAlertDialog.setMessage("How do you want to set your picture?"); myAlertDialog.setPositiveButton("Gallery", new DialogInterface.OnClickListener() { public void onClick(DialogInterface arg0, int arg1) { pictureActionIntent = new Intent(Intent.ACTION_GET_CONTENT, null); pictureActionIntent.setType("image/*"); pictureActionIntent.putExtra("return-data", true); startActivityForResult(pictureActionIntent, GALLERY_PICTURE); } }); myAlertDialog.setNegativeButton("Camera", new DialogInterface.OnClickListener() { public void onClick(DialogInterface arg0, int arg1) { pictureActionIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(pictureActionIntent, CAMERA_PICTURE); } }); myAlertDialog.show(); } } </code></pre> <p>The Camera works fine, but the Gallery doesn't work at all. It kept crashing for some reasons, could anyone shed me a light? Thanks.</p> <p><strong>EDIT</strong></p> <p>Error Log</p> <pre><code>11-14 01:09:30.566: E/AndroidRuntime(24630): FATAL EXCEPTION: main 11-14 01:09:30.566: E/AndroidRuntime(24630): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=2, result=0, data=null} to activity {com.csun.spotr/com.csun.spotr.UploadImageActivity}: java.lang.NullPointerException 11-14 01:09:30.566: E/AndroidRuntime(24630): at android.app.ActivityThread.deliverResults(ActivityThread.java:2532) 11-14 01:09:30.566: E/AndroidRuntime(24630): at android.app.ActivityThread.handleSendResult(ActivityThread.java:2574) 11-14 01:09:30.566: E/AndroidRuntime(24630): at android.app.ActivityThread.access$2000(ActivityThread.java:117) 11-14 01:09:30.566: E/AndroidRuntime(24630): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:961) 11-14 01:09:30.566: E/AndroidRuntime(24630): at android.os.Handler.dispatchMessage(Handler.java:99) 11-14 01:09:30.566: E/AndroidRuntime(24630): at android.os.Looper.loop(Looper.java:130) 11-14 01:09:30.566: E/AndroidRuntime(24630): at android.app.ActivityThread.main(ActivityThread.java:3683) 11-14 01:09:30.566: E/AndroidRuntime(24630): at java.lang.reflect.Method.invokeNative(Native Method) 11-14 01:09:30.566: E/AndroidRuntime(24630): at java.lang.reflect.Method.invoke(Method.java:507) 11-14 01:09:30.566: E/AndroidRuntime(24630): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 11-14 01:09:30.566: E/AndroidRuntime(24630): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 11-14 01:09:30.566: E/AndroidRuntime(24630): at dalvik.system.NativeStart.main(Native Method) 11-14 01:09:30.566: E/AndroidRuntime(24630): Caused by: java.lang.NullPointerException 11-14 01:09:30.566: E/AndroidRuntime(24630): at com.csun.spotr.UploadImageActivity.onActivityResult(UploadImageActivity.java:42) 11-14 01:09:30.566: E/AndroidRuntime(24630): at android.app.Activity.dispatchActivityResult(Activity.java:3908) 11-14 01:09:30.566: E/AndroidRuntime(24630): at android.app.ActivityThread.deliverResults(ActivityThread.java:2528) 11-14 01:09:30.566: E/AndroidRuntime(24630): ... 11 more </code></pre> <p>Just realized that if I take this line out: <code>super.onActivityResult(requestCode, resultCode, data);</code> then it no longer crash, but clicking on the image from Gallery didn't pop up on the image view. Any idea?</p>
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    1. USChan
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    1. COwhile crashing which exception occure?
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      1. USSamir Mangroliya
    2. CO@Samir: Didn't see any useful message since I can only run it manually on my phone. Using an emulator always prompt "image not found" even though I already set up my sdcard.
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    3. COwhat error you are getting ??? share errorlog
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      1. USShailendra Singh Rajawat
 

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