Develop Reference

How to access SYSTEM_ALERT_WINDOW permission run time?

This is my code for reference. I have added the run time permission code and system granting the permission but again it gives an error:
Failed due to non declaration of following android.permission.SYSTEM_ALERT_WINDOW permission in Manifest file
public boolean checkDrawOverlayPermission()
{
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
{
return true;
}
if (!Settings.canDrawOverlays(this))
{
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, REQUEST_CODE);
return false;
}
else
{
return true;
}
}
#Override
#TargetApi(Build.VERSION_CODES.M)
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == REQUEST_CODE)
{
if (Settings.canDrawOverlays(this))
{
//startService(new Intent(this, PowerButtonService.class));
//Toast.makeText(this, "permission granted", Toast.LENGTH_SHORT).show();
if(!checkPermission())
{
requestPermission();
}
else
{
//Toast.makeText(this, "Phone State Permission Already Granted", Toast.LENGTH_SHORT).show();
//callBeacon();
}
}
}
}
Manifest File :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.adsl.beaconapp">
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.INTERACT_ACROSS_USERS_FULL" />
<!-- Declaration that this app is usable on phones with Bluetooth Low Energy. -->
<uses-feature
android:name="android.hardware.bluetooth_le"
android:required="true" />
<!-- Declaration permission for using internet -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
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>
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="#string/app_id" />
<!-- <activity android:name="com.facebook.LoginActivity" /> -->
<activity
android:name="com.beaconstreamsdk.com.MainActivity"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.Black.NoTitleBar" />
<service
android:name="com.beaconstreamsdk.com.service.BeaconService"
android:enabled="true"
android:exported="false" />
<service
android:name="com.beaconstreamsdk.com.service.FloatingHeadService"
android:enabled="true"
android:exported="false" />
<service
android:name="com.beaconstreamsdk.com.service.ConnectionService"
android:enabled="true"
android:exported="false" />
<activity
android:name="com.beaconstreamsdk.com.SignUpActivity"
android:screenOrientation="portrait" />
<activity android:name=".Main2Activity" />
<activity android:name=".BeaconStreamActivity"></activity>
</application>
</manifest>
onActivityResult :
#Override
#TargetApi(Build.VERSION_CODES.M)
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == REQUEST_CODE)
{
if (Settings.canDrawOverlays(this))
{
//startService(new Intent(this, PowerButtonService.class));
//Toast.makeText(this, "permission granted", Toast.LENGTH_SHORT).show();
if(!checkPermission())
{
requestPermission();
}
else
{
Toast.makeText(this, "Phone State Permission Already Granted", Toast.LENGTH_SHORT).show();
//callBeacon();
}
}
}
}

Please try this way. May be you are facing condition problem,
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M)
{
if (!Settings.canDrawOverlays(this))
{
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, REQUEST_CODE);
return false;
}
else
{
return true;
}
}else{
return true;
}

Pressing back button stops app during Camera activity

I capture photo and save into my Gallery. Everything works perfect when I capture an image and save. But if the camera is on and if I press the back button without taking a picture then the application stops.
How I can solve this issue?
This is my code:
public class ImportCard extends Activity {
private static final int CAMERA_PIC_REQUEST = 1111;
ImageButton importimage;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_import_card);
ImageButton importimage = (ImageButton) findViewById(R.id.importimage);
importimage.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, CAMERA_PIC_REQUEST);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_PIC_REQUEST) {
//2
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
//3
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
thumbnail.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
//4
File file = new File(Environment.getExternalStorageDirectory()+File.separator + "image.jpg");
try {
file.createNewFile();
FileOutputStream fo = new FileOutputStream(file);
//5
fo.write(bytes.toByteArray());
fo.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
Android Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mapcard"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.CALL_PHONE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera"
android:required="true" />
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/vcard"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.mapcard.Splash"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.mapcard.Main"
android:label="#string/app_name" >
<intent-filter>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.mapcard.NewCard"
android:label="#string/title_activity_new_card" >
</activity>
<activity
android:name="com.example.mapcard.ImportCard"
android:label="#string/title_activity_import_card">
</activity>
<activity
android:name="com.example.mapcard.CardBox"
android:label="#string/title_activity_card_box" >
</activity>
<activity
android:name="com.example.mapcard.QRCode"
android:label="#string/title_activity_new_card" >
</activity>
<activity
android:name="com.example.mapcard.Template"
android:label="#string/title_template" >
</activity>
<activity
android:name="com.example.mapcard.DisplayCard"
android:label="#string/title_display_card" >
</activity>
<activity
android:name="com.example.mapcard.GoogleMap"
android:label="#string/title_activity_google" >
</activity>
<activity
android:name="com.example.mapcard.ViewCard"
android:label="#string/title_view_card" >
</activity>
<activity
android:name="com.example.mapcard.QRScan"
android:label="#string/title_activity_import_card" >
</activity>
<activity
android:name="com.example.mapcard.ViewTemplates"
android:label="#string/title_view_templates" >
</activity>
<activity
android:name="com.example.mapcard.SendEmail"
android:label="#string/title_send_email" >
</activity>
</application>
Error in my LogCat:
java.lang.RuntimeException: Failure delivering result
Error on my device:
Unfortunately, App has stopped

You are checking only requestCode. You should check the value of resultCode also. When the user has successfully performed the action, the resultCode will be equal to RESULT_OK. If the user presses the back button then the resultCode will be RESULT_CANCELED. So your code must be modified like this.
protected void onActivityResult (int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_PIC_REQUEST && resultCode == RESULT_OK) {
//2

Add
android:noHistory="false"
in AndroidManifest.xml for that activity

In onActivityResult you should check whether thumbnail is null, and if so just return.
Edit: like this
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
...
Bundle extras = data.getExtras();
if (extras == null || extras.get("data") == null) return;
Bitmap thumbnail = (Bitmap) extras.get("data");
...
}
}

Codes for call recording in android

I am making and application that records calls. Here is my code to record a call and save the file in the SD card under songs folder. But the problem is that this code was working fine but later it is not working. I cannot find what is the problem. Can you please help me out?
My Broad cast receiver:
public class BrCallReceive extends BroadcastReceiver {
#Override
public void onReceive(Context c, Intent i) {
Bundle extras = i.getExtras();
Intent x = new Intent (c, EavesDropperActivity.class);
x.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (extras != null) {
String state = extras.getString(TelephonyManager.EXTRA_STATE);
Log.w("DEBUG", state);
if (state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)) {
Log.w("DEBUG", "MATCHES");
Toast.makeText(c, "Launching record APP !", Toast.LENGTH_LONG).show();
c.startActivity(x);
}
}
}
}
My Recording activity:
public class EavesDropperActivity extends Activity {
/** Called when the activity is first created. */
MediaRecorder m_recorder = new MediaRecorder();
TelephonyManager t_manager ;
PhoneStateListener p_listener ;
String record_state;
Uri file;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.main);
Toast.makeText(getBaseContext(),
"Executing Activity",
Toast.LENGTH_LONG).show();
t_manager = (TelephonyManager) getSystemService (Context.TELEPHONY_SERVICE);
p_listener = new PhoneStateListener() {
#Override
public void onCallStateChanged (int state, String incomingNumber) {
switch (state) {
case (TelephonyManager.CALL_STATE_IDLE) :
stop_recorder();
//t_manager.listen(p_listener, PhoneStateListener.LISTEN_NONE);
//finish();
break;
case (TelephonyManager.CALL_STATE_OFFHOOK) :
start_recorder();
break;
case (TelephonyManager.CALL_STATE_RINGING) :
break;
}
}
};
t_manager.listen(p_listener, PhoneStateListener.LISTEN_CALL_STATE);
return;
}
public void start_recorder () {
m_recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
m_recorder.setOutputFormat(OutputFormat.THREE_GPP);
m_recorder.setOutputFile(Environment.getExternalStorageDirectory()+"/songs/audionew.3gpp");
m_recorder.setAudioEncoder(AudioEncoder.AMR_NB);
try {
m_recorder.prepare();
m_recorder.start();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void stop_recorder () {
m_recorder.stop();
m_recorder.release();
Uri file = Uri.fromFile(
new File(Environment.getExternalStorageDirectory(),"/songs/audionew.3gpp"));
Toast.makeText(getBaseContext(),
"record stored at " + file.toString(),
Toast.LENGTH_LONG).show();
t_manager.listen(p_listener, PhoneStateListener.LISTEN_NONE);
finish();
}
}
My manifest :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.testapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.testapp.EavesDropperActivity"
android:label="#string/app_name" >
</activity>
<receiver android:name="BrCallReceive" >
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" >
</action>
</intent-filter>
</receiver>
</application>
</manifest>

I think the broadcast receiver is not getting activated wile i am calling my phone.
How do you know your broadcast receiver is not working? Place a Log message inside onReceive() right at the beginning. It might be that your extras == null
But how to make my receiver functional now?
Check out example #5 and just follow the same steps.
Bro i dont think activity will get launched.
Well, it does: You are starting it in your onReceive():
Intent x = new Intent (c, EavesDropperActivity.class);
c.startActivity(x);
However, you are not setting any content in your Activity i.e no UI screen is presented because you have this line commented in onCreate() of EavesDropperActivity Activity:
//setContentView(R.layout.main);
So, you need to think hard on what you are trying to achieve in EavesDropperActivity
HTH.

Put this
<android:permission="android.permission.RECEIVE_BOOT_COMPLETED" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
in mainfest file for broadcast receiver.

Add your package name to your receiver class as,
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.testapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.testapp.EavesDropperActivity"
android:label="#string/app_name" >
</activity>
<receiver android:name="com.example.testapp.BrCallReceive" >
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" >
</action>
</intent-filter>
</receiver>
</application>

Android Start new activity first time

Android app issue:
I have MainActivity that when you press a button it opens the camera (an OCR) via Intent and startActivity. The problem is when I press the button in my mobile the first time after the installation, it gets blocked.
Then, after the first time, it works perfect...
By the way, when I try to execute the app in the android emulator it gives me only one error: "error opening trace file: No such file or directory" I don't know if this error is related with my problem in the mobile.
Here is the intent of MainActivity
Button2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
try {
Intent i = new Intent(getApplicationContext(), CaptureActivity.class);
startActivityForResult(i, REQUEST_CODE);
} catch (Exception e) {
}
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK && requestCode == REQUEST_CODE) {
if (data.hasExtra("ocrResult")) {
EditText.setText(data.getExtras().getString("ocrResult"));
} else if (resultCode == RESULT_CANCELED) {
}
}
}
And here you have the code of the OCR that sends the result to MainActivity
public void onClick(View v) {
finish();
}
public void finish() {
Intent data = new Intent();
data.putExtra("ocrResult", ocrResultView.getText());
setResult(RESULT_OK, data);
super.finish();
}
Finally, the manifest
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="edu.sfsu.cs.orange.ocr"
android:installLocation="auto"
android:versionName="0.5.13"
android:versionCode="32"
>
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="13"/>
<supports-screens android:xlargeScreens="true"
android:largeScreens="true"
android:normalScreens="true"
android:smallScreens="true" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-feature android:name="android.hardware.camera.flash" android:required="false" />
<uses-feature android:name="android.hardware.camera"/>
<uses-feature android:name="android.hardware.screen.landscape"/>
<application android:icon="#drawable/ic_launcher"
android:label="#string/app_name">
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".CaptureActivity"
android:screenOrientation="landscape"
android:configChanges="orientation|keyboardHidden|screenSize"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen"
android:windowSoftInputMode="stateAlwaysHidden"
>
</activity>
<activity android:name="edu.sfsu.cs.orange.ocr.PreferencesActivity"> </activity>
</application>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
</manifest>
Thank you very much!!

Android Security Exception while accessing contacts

This is totally weird and I've searched through the forums.
In my main class I have a button onClick will launch the contacts application as shown below. When I click the button, he contacts list is shown but as soon as I tap on a contact a security exception is thrown.
public void selectContacts(View v) {
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent, PICK_CONTACT);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case PICK_CONTACT:
if (resultCode == Activity.RESULT_OK) {
Uri contactData = data.getData();
Cursor c = managedQuery(contactData, null, null, null, null);
while (c.moveToNext()) {
String id = c.getString(c.getColumnIndex(ContactsContract.Contacts._ID));
String phoneNumber = getPhoneNumber(id);
listOfContacts.add(phoneNumber);
}
} else {
System.out.println("User didn't pick a contact");
finish();
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
I've checked the manifest and have tried all combinations of placing the uses-permission tag, within the application, activity etc. But nothing works. Here's my manifest.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="in.company.letsmeet"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="7" />
<uses-permision android:name="android.permission.SEND_SMS" />
<uses-permision android:name="android.permission.RECEIVE_SMS" />
<uses-permision android:name="android.permission.INTERNET" />
<uses-permision android:name="android.permission.READ_CONTACTS" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name=".LetsmeetActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
The security exception :
05-04 11:26:39.950: E/AndroidRuntime(3861): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://com.android.contacts/contacts/7 }} to activity {in.company.letsmeet/in.company.letsmeet.LetsmeetActivity}: java.lang.SecurityException: Permission Denial: reading com.android.providers.contacts.SemcContactsProvider2 uri content://com.android.contacts/contacts/7 from pid=3861, uid=10093 requires android.permission.READ_CONTACTS
Any help will be greatly appreciated. I'm trying this on Android 2.1 Sony experia S10 mini.

So guess what, I added the READ_CONTACTS permission in the Manifest GUI and it works. God I wasted an entire day on this. Hope others don't have to.

Try out below code.That may be helpful to you -
public class PickDemo extends Activity {
private static final int PICK_REQUEST=1337;
private static Uri CONTENT_URI=null;
static {
int sdk=new Integer(Build.VERSION.SDK).intValue();
if (sdk>=5) {
try {
Class<?> clazz=Class.forName("android.provider.ContactsContract$Contacts");
CONTENT_URI=(Uri)clazz.getField("CONTENT_URI").get(clazz);
}
catch (Throwable t) {
Log.e("PickDemo", "Exception when determining CONTENT_URI", t);
}
}
else {
CONTENT_URI=Contacts.People.CONTENT_URI;
}
}
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
if (CONTENT_URI==null) {
Toast
.makeText(this, "We are experiencing technical difficulties...",
Toast.LENGTH_LONG)
.show();
finish();
return;
}
setContentView(R.layout.main);
Button btn=(Button)findViewById(R.id.pick);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent i=new Intent(Intent.ACTION_PICK, CONTENT_URI);
startActivityForResult(i, PICK_REQUEST);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
if (requestCode==PICK_REQUEST) {
if (resultCode==RESULT_OK) {
startActivity(new Intent(Intent.ACTION_VIEW,
data.getData()));
}
}
}
}
Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest android:versionCode="1"
android:versionName="1.0"
package="com.commonsware.android.contacts.pick"
xmlns:android="http://schemas.android.com/apk/res/android">
<uses-sdk android:minSdkVersion="3"
android:targetSdkVersion="6" />
<supports-screens android:largeScreens="true"
android:normalScreens="true"
android:smallScreens="false" />
<application android:icon="#drawable/cw"
android:label="#string/app_name">
<activity android:label="#string/app_name"
android:name=".PickDemo">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
And, just refer Commonsware's example. Hope this helps you.