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POCalling camera from an activity, capturing an image and uploading to a server
 

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    <p>In my app, I have a button1 which calls camera, and after capturing the image, it must be saved to the device gallery. When I click on button2, it must open the gallery, and ask to select a picture. When selected, it must be shown on the imageView below these buttons.</p> <p>Here is my code:</p> <pre><code>package com.android.imageuploading; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.util.List; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.provider.MediaStore; import android.view.View; import android.widget.Button; import android.widget.ImageView; public class ImageUploadingActivity extends Activity { private static final int REQUEST_CODE = 1; private Bitmap bitmap; private ImageView imageView; private Button button_1; public int TAKE_PICTURE = 1; private Button button_2; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); imageView = (ImageView) findViewById(R.id.image); button_1 = (Button) findViewById(R.id.button1); button_1.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); startActivityForResult(intent, TAKE_PICTURE); } }); button_2 = (Button) findViewById(R.id.button2); button_2.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { pickImage(getCurrentFocus()); } }); } public void pickImage(View view) { Intent intent = new Intent(); intent.setType("image/*"); intent.setAction(Intent.ACTION_GET_CONTENT); intent.addCategory(Intent.CATEGORY_OPENABLE); startActivityForResult(intent, REQUEST_CODE); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == REQUEST_CODE &amp;&amp; resultCode == Activity.RESULT_OK) try { // We need to recyle unused bitmaps if (bitmap != null) { bitmap.recycle(); } InputStream stream = getContentResolver().openInputStream( data.getData()); bitmap = BitmapFactory.decodeStream(stream); stream.close(); imageView.setImageBitmap(bitmap); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } super.onActivityResult(requestCode, resultCode, data); } public static boolean isIntentAvailable(Context context, String action) { final PackageManager packageManager = context.getPackageManager(); final Intent intent = new Intent(action); List&lt;ResolveInfo&gt; list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY); return list.size() &gt; 0; } } </code></pre> <p>The problem is, when I capture the image, it asks for save or discard. When I click on save, my app crashes, saying:</p> <blockquote> <p>java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.android.imageuploading/com.android.imageuploading.ImageUploadingActivity}: java.lang.NullPointerException</p> </blockquote> <p>Where do I need to change the code?</p>
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    1. COpossible duplicate of [Android activity to open camera and upload an image to a server](http://stackoverflow.com/questions/10663019/android-activity-to-open-camera-and-upload-an-image-to-a-server)
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