in my application,i am using android devices camera to capture an image. for some devices it works fine but some are not. I just tested it on LG nexus 4 E960, after i captured the image my application went crash without able to save the result. this is my code:
//Using intent to open camera
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent,CAMERA_CAPTURE);
in the activityResult :
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if(resultCode==RESULT_OK)
{
if(requestCode==CAMERA_CAPTURE)
{
Bitmap pictTaken = null ;
Bundle extras = data.getExtras();
if(extras.keySet().contains("data"))
{
pictTaken = (Bitmap) extras.get("data");
picUri = getIntent().getData();
}
else{
picUri = getIntent().getData();
try {
pictTaken = decodeUri(picUri);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Intent cropIntent= new Intent (this, Crop.class);
cropIntent.putExtra("data", picUri.toString());
cropIntent.putExtra("pict", pictTaken);
cropIntent.putExtra("code","camera");
startActivity(cropIntent);
}
}
after captured and save it, the image show in next activity called Crop.class here is my logcat
12-12 13:26:36.340: E/AndroidRuntime(23575): FATAL EXCEPTION: main
12-12 13:26:36.340: E/AndroidRuntime(23575): Process: com.example.cobaandroid, PID: 23575
12-12 13:26:36.340: E/AndroidRuntime(23575): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.example.cobaandroid/com.example.cobaandroid.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.toString()' on a null object reference
12-12 13:26:36.340: E/AndroidRuntime(23575): at android.app.ActivityThread.deliverResults(ActivityThread.java:3368)
12-12 13:26:36.340: E/AndroidRuntime(23575): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3411)
12-12 13:26:36.340: E/AndroidRuntime(23575): at android.app.ActivityThread.access$1300(ActivityThread.java:138)
12-12 13:26:36.340: E/AndroidRuntime(23575): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247)
12-12 13:26:36.340: E/AndroidRuntime(23575): at android.os.Handler.dispatchMessage(Handler.java:102)
12-12 13:26:36.340: E/AndroidRuntime(23575): at android.os.Looper.loop(Looper.java:136)
12-12 13:26:36.340: E/AndroidRuntime(23575): at android.app.ActivityThread.main(ActivityThread.java:5050)
12-12 13:26:36.340: E/AndroidRuntime(23575): at java.lang.reflect.Method.invoke(Native Method)
12-12 13:26:36.340: E/AndroidRuntime(23575): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
12-12 13:26:36.340: E/AndroidRuntime(23575): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
12-12 13:26:36.340: E/AndroidRuntime(23575): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.toString()' on a null object reference
12-12 13:26:36.340: E/AndroidRuntime(23575): at com.example.cobaandroid.MainActivity.onActivityResult(MainActivity.java:226)
12-12 13:26:36.340: E/AndroidRuntime(23575): at android.app.Activity.dispatchActivityResult(Activity.java:5433)
12-12 13:26:36.340: E/AndroidRuntime(23575): at android.app.ActivityThread.deliverResults(ActivityThread.java:3364)
12-12 13:26:36.340: E/AndroidRuntime(23575): ... 9 more
I got a problem to open/use the camera that work at most android devices, the main goal of this project is heavily depend on the use of the camera. please hand me your help, thank you..
try below code,
Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
File file=getOutputMediaFile(1);
picUri = Uri.fromFile(file); // create
i.putExtra(MediaStore.EXTRA_OUTPUT,picUri); // set the image file
startActivityForResult(i, CAPTURE_IMAGE);
where getOutputMediaFile(int) will be,
/** Create a File for saving an image */
private File getOutputMediaFile(int type){
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "MyApplication");
/**Create the storage directory if it does not exist*/
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
return null;
}
}
/**Create a media file name*/
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if (type == 1){
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_"+ timeStamp + ".png");
} else {
return null;
}
return mediaFile;
}
and finally,
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
Intent i;
switch (requestCode) {
case CAPTURE_IMAGE:
//THIS IS YOUR Uri
Uri uri=picUri;
break;
}
}
}
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