I recently made an app wherein when user clicks on the "Take Picture" button on the screen the app would capture an image with the default native app of the Android OS. When I ran the app on the AVD emulator in Android Studio the app would launch but when I clicked the button the app crashed with a pop-up dialog stating "Unfortunately, the app has stopped working."
I have consulted Android developer site documentation as well as various sites but still there is no improvement.
Please tell me why is this happening. Here is the code for the app:
Code for AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest
package="com.example.the_joker.simplephoto"
xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.CAMERA"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
Code for MainActivity.java
package com.example.the_joker.simplephoto;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends AppCompatActivity {
private static final int CAMERA_REQUEST=123;
private ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar=(Toolbar)findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG).setAction("Action", null).show();
}
});
imageView=(ImageView)findViewById(R.id.imageView1);
Button photoButton=(Button)findViewById(R.id.button1);
photoButton.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view){
Intent cameraIntent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo=(Bitmap)data.getExtras().get("data");
imageView.setImageBitmap(photo);
}
}
}
Code for content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.the_joker.simplephoto.MainActivity"
tools:showIn="@layout/activity_main">
<Button android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Take picture"/>
<ImageView android:id="@+id/imageView1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginTop="200dp"
android:layout_marginLeft="50dp"/>
</LinearLayout>
The logcat exception when I clicked on the button
08-01 20:27:37.862 3977-3977/com.example.the_joker.simplephoto
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.the_joker.simplephoto, PID: 3977
java.lang.SecurityException: Permission Denial: starting Intent {
act=android.media.action.IMAGE_CAPTURE cmp=com.android.camera/.Camera }
from ProcessRecord{43c5315 3977:com.example.the_joker.simplephoto/u0a76}
(pid=3977, uid=10076) with revoked permission android.permission.CAMERA
at android.os.Parcel.readException(Parcel.java:1599)
at android.os.Parcel.readException(Parcel.java:1552)
at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:2658)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1507)
at android.app.Activity.startActivityForResult(Activity.java:3917)
at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:48)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:75)
at android.app.Activity.startActivityForResult(Activity.java:3877)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:871)
at com.example.the_joker.simplephoto.MainActivity$2.onClick(MainActivity.java:43)
at android.view.View.performClick(View.java:5198)
at android.view.View$PerformClick.run(View.java:21147)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
