I'm extracting a bitmap in my app right now. It requires a READ_EXTERNAL_STORAGE permission. Since I'm working with Android 6 (API23), I have
1. declared such permission in Android.manifest as
<uses-permission tools:node="replace" android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission tools:node="replace" android:name="android.permission.READ_EXTERNAL_STORAGE" />
checked permissions during runtime( using
ActivityCompat.requestPermissions(...)
in MainActivity and then another
onRequestPermissionsResult(..)
callback to handle the stuff after I get such permission).
However I still fail to fetch the bitmap I want, with an error indicating that I have insufficient permissions.
I also checked the phone's app settings regarding my app's permission and switched on and off the "storage" option, a dialog did popped up requesting permission, but still, after allowing access for the app I get the same error:
07-12 14:54:59.255 31895 31911 E DatabaseUtils: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uricontent://media/external/images/media from pid=18177, uid=10077 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
In MainActivity
String[] perms = {"android.permission.READ_EXTERNAL_STORAGE"};
int permsRequestCode = 200;
In OnCreate
ActivityCompat.requestPermissions(this, perms, permsRequestCode);
The callback in MainActivity:
#Override
public void onRequestPermissionsResult(int permsRequestCode, String[] permissions, int[] grantResults){
super.onRequestPermissionsResult(permsRequestCode, permissions, grantResults);
switch(permsRequestCode){
case 200:
Log.e(TAG, "checking permissions");
if(grantResults.length>0&&grantResults[0]==PackageManager.PERMISSION_GRANTED&&isPreview){
bitmap.getPixels(left, 0,0,0,0,w/2,h);
bitmap.getPixels(right, 0,0,w/2,0,w/2,h);
Log.e(TAG, "left and right stored");
};
//writeAccepted = grantResults[1]==PackageManager.PERMISSION_GRANTED;
break;
}
}
Am I still missing anything here?
Related
I am using this code to ask permission for CALL_PHONE, it is working below api level 28, but not working above that. Below api level 28 if the permission is not granted it is showing the dialog for giving permission, but above 28 no dialog is popping up, I am getting only the toast message.
if (ContextCompat.checkSelfPermission(ProcessingCallActivity.this, Manifest.permission.CALL_PHONE)
!= PackageManager.PERMISSION_GRANTED) {
// Permission is not granted
finish();
ActivityCompat.requestPermissions( ProcessingCallActivity.this, new String[]{Manifest.permission.CALL_PHONE},REQUEST_PHONE_CALL);
Toast.makeText(ProcessingCallActivity.this, "Call permission needed", Toast.LENGTH_SHORT).show();
}
Add below permission in manifest
<uses-permission android:name="android.permission.CALL_PHONE" />
Remove that finish() Statement
I'm trying to write code to send an SMS from an Android app, but when I try to send the SMS it sends me back the error:
09-17 18:37:29.974 12847-12847/**.**.****E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: **.**.****, PID: 12847
java.lang.SecurityException: Sending SMS message: uid 10092 does not have android.permission.SEND_SMS.
at android.os.Parcel.readException(Parcel.java:1599)
at android.os.Parcel.readException(Parcel.java:1552)
at com.android.internal.telephony.ISms$Stub$Proxy.sendTextForSubscriber(ISms.java:768)
at android.telephony.SmsManager.sendTextMessageInternal(SmsManager.java:310)
at android.telephony.SmsManager.sendTextMessage(SmsManager.java:293)
at **.**.****.MainActivity$3.onClick(MainActivity.java:70)
at android.view.View.performClick(View.java:5198)
at android.view.View$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)
I checked but I have the permissions in the manifest, as follows:
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-feature android:name="android.hardware.telephony"
android:required="true"/>
<application
android:exported="true"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
I searched the internet but all the errors were about the <uses-permission/> syntax, could you help me please?
(the following is extracted from a blog post of mine about this)
The big reason for not getting your permission nowadays is because
your project has a targetSdkVersion of 23 or higher, and the permission
that you are requesting is "dangerous". In Android 6.0, this includes:
ACCEPT_HANDOVER
ACCESS_BACKGROUND_LOCATION
ACCESS_MEDIA_LOCATION
ACTIVITY_RECOGNITION
ANSWER_PHONE_CALLS
ACCESS_COARSE_LOCATION
ACCESS_FINE_LOCATION
ADD_VOICEMAIL
BODY_SENSORS
CALL_PHONE
CAMERA
GET_ACCOUNTS
PROCESS_OUTGOING_CALLS
READ_CALENDAR
READ_CALL_LOG
READ_CELL_BROADCASTS
READ_CONTACTS
READ_EXTERNAL_STORAGE
READ_PHONE_STATE
READ_SMS
RECEIVE_MMS
RECEIVE_SMS
RECEIVE_WAP_PUSH
RECORD_AUDIO
SEND_SMS
USE_SIP
WRITE_CALENDAR
WRITE_CALL_LOG
WRITE_CONTACTS
WRITE_EXTERNAL_STORAGE
For these permissions, not only does your targetSdkVersion 23+ app
need to have the <uses-permission> element(s), but you also have
to ask for those permissions at runtime from the user on Android 6.0+
devices, using methods like checkSelfPermission() and
requestPermissions().
As a temporary workaround, drop your targetSdkVersion below 23.
However, eventually, you will have some reason to want your
targetSdkVersion to be 23 or higher. At that time, you will need
to adjust your app to use the new runtime permission system.
The Android documentation has
a page dedicated to this topic.
Above API level 23 you will be given programmatically pragmatically like:
private static final int PERMISSION_REQUEST_CODE = 1;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.SEND_SMS)
== PackageManager.PERMISSION_DENIED) {
Log.d("permission", "permission denied to SEND_SMS - requesting it");
String[] permissions = {Manifest.permission.SEND_SMS};
requestPermissions(permissions, PERMISSION_REQUEST_CODE);
}
}
Please go through the link below,
https://developer.android.com/guide/topics/permissions/overview.html
Some samples are also available there to get start with the permissions.
To make android more secure now developers has to mention permission in manifest as well as they should have to ask user as well in run time to get the work done. They are permission categorized in dangerous permission section which are mention below
CALENDAR
READ_CALENDAR
WRITE_CALENDAR
CAMERA
CAMERA
CONTACTS
READ_CONTACTS
WRITE_CONTACTS
GET_ACCOUNTS
LOCATION
ACCESS_FINE_LOCATION
ACCESS_COARSE_LOCATION
MICROPHONE
RECORD_AUDIO
PHONE
READ_PHONE_STATE
READ_PHONE_NUMBERS
CALL_PHONE
ANSWER_PHONE_CALLS (must request at runtime)
READ_CALL_LOG
WRITE_CALL_LOG
ADD_VOICEMAIL
USE_SIP
PROCESS_OUTGOING_CALLS
ANSWER_PHONE_CALLS
SENSORS
BODY_SENSORS
SMS
SEND_SMS
RECEIVE_SMS
READ_SMS
RECEIVE_WAP_PUSH
RECEIVE_MMS
STORAGE
READ_EXTERNAL_STORAGE
WRITE_EXTERNAL_STORAGE
request permission pragmatically (after API 23)
if (ContextCompat.checkSelfPermission(thisActivity, Manifest.permission.SEND_SMS)
!= PackageManager.PERMISSION_GRANTED) {
// Permission is not granted
// Ask for permision
ActivityCompat.requestPermissions(this,new String[] { Manifest.permission.SEND_SMS}, 1);
}
else {
// Permission has already been granted
}
"If the app has the permission, the method checkSelfPermission() returns PERMISSION_GRANTED, and the app can proceed with the operation.
If the app does not have the permission, the method returns PERMISSION_DENIED, and the app has to explicitly ask the user for permission. You need to prompt the user for that permission, as shown in the above code. Calling requestPermissions() brings up a standard Android dialog, which you cannot customize."
If you are using sdk 23 or higher then you must check run time permissions.
when you declare permisson in Manifest and it's not work means you are performing Task in MarshMallow and for MarshMallow you have set Permisson at RunTime.
like this way
ActivityCompat.requestPermissions();
If you are using Android version "23" or "23+", then app will show you errors when you are trying to access anything which requires user's permission. You have to ask for permissions at run-time even if you have declared those permissions in Android manifest.
Check this: https://developer.android.com/training/permissions/requesting.html
But if you have created your whole application and don't want to change at every place then a little cheat will be sufficient.
Go to "Build.gradle" file and change the target Sdk version to less than 23, like 22, 21.
Along with CommonsWare's answer,
There is a Security Setting (I checked on CM13) to set SMS Message Limit. If you set this to "None", OS will popup a Dialog for every SMS, even after obtaining SMS_SEND permission in the runtime. Best thing is to set this to maximum.
If the maximum is not enough, there are ways to increases the maximum rate on a rooted device.
I added this to my MainActivity, that resolve my problem
int MY_PERMISSIONS_REQUEST_READ_CONTACTS=0;
// Here, thisActivity is the current activity
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.WRITE_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
// Show an expanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
MY_PERMISSIONS_REQUEST_READ_CONTACTS);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
}
}
I hope the solution to write to external storage will be useful too
public boolean checkPermission() {
if (Build.VERSION.SDK_INT >= 23) {
if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_GRANTED) {
Timber.tag(LOG_TAG).e("Permission error. You have permission");
return true;
} else {
Timber.tag(LOG_TAG).e("Permission error. You have asked for permission");
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
return false;
}
}
else {
// for a stuff below api level 23
Timber.tag(LOG_TAG).e("Permission error. You already have the permission");
return true;
}
}
So i had to create an app to send and receive messages but the send action crashed whenever i clicked on send even though the permission was granted . I had requested runtime permissions and allowed them, still i faced a crash that the process doesnt have the requested permission to send SMS .
I had checked the granted permissions from :
adb shell dumpsys package <package-name>
The order of my request for permissions was
RECEIVE_SMS
SEND_SMS
I reverted the order of request and it works fine . This was tested with a complete new app(uninstall-> install -> test). The answer may seem weird but just give it a shot .
(If it works in the shown way in a certain order, then Android might have a bug!!)
I am newbie to native android development. I am working on android studio. I have a tabbed activity in which i am using 2 tabs. In one tab there is a map with marker on gps location of the user. The second tab is to take picture and then to save it in the storage provided by the OS. For this i followed this tutorial, run the app on my device but it's crashes. I am running it on Marshmallow. Below is the error i get
java.lang.SecurityException: Permission Denial: starting Intent { act=android.media.action.IMAGE_CAPTURE cmp=android/com.android.internal.app.ResolverActivity } from ProcessRecord{e8f9820 15070:com.example.accurat.faisal/u0a228} (pid=15070, uid=10228) with revoked permission android.permission.CAMERA
at android.os.Parcel.readException(Parcel.java:1620)
at android.os.Parcel.readException(Parcel.java:1573)
at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:3181)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1541)
at android.app.Activity.startActivityForResult(Activity.java:4298)
at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:50)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:79)
at android.support.v4.app.ActivityCompatJB.startActivityForResult(ActivityCompatJB.java:30)
at android.support.v4.app.ActivityCompat.startActivityForResult(ActivityCompat.java:146)
at android.support.v4.app.FragmentActivity.startActivityFromFragment(FragmentActivity.java:937)
at android.support.v4.app.FragmentActivity$HostCallbacks.onStartActivityFromFragment(FragmentActivity.java:1047)
at android.support.v4.app.Fragment.startActivityForResult(Fragment.java:954)
at android.support.v4.app.Fragment.startActivityForResult(Fragment.java:943)
at com.example.accurat.faisal.Camera$1.onClick(Camera.java:51)
at android.view.View.performClick(View.java:5716)
at android.widget.TextView.performClick(TextView.java:10926)
at android.view.View$PerformClick.run(View.java:22596)
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:7325)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
I searched it and found that i should ask permission for it so i followed this link and tried to add permission check like as bellow
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Check permission for CAMERA
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.CAMERA)
!= PackageManager.PERMISSION_GRANTED) {
// Check Permissions Now
// Callback onRequestPermissionsResult interceptado na Activity MainActivity
ActivityCompat.requestPermissions(getActivity(),
new String[]{Manifest.permission.CAMERA},
MainActivity.REQUEST_CAMERA);
}
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE );
}
});
But i am getting red text of CAMERA and REQUEST_CAMERA. Though i have imported them as well but still the red text is showing
import static android.Manifest.permission.CAMERA;
import static android.Manifest.permission.RECORD_AUDIO;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;
Below is my manifest file
<uses-permission android:name="com.example.accurat.faisal.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.hardware.camera"/>
I don't know what is the problem and don't know the solution and i am stuck to it.
Any help would be highly appreciated
You need to add permission check in your code and based on user action of accecpt or denial should show the camera preview Beginning in Android 6.0 (API level 23), users grant permissions to apps while the app is running. Also, you need to ask user permission for android.Manifest.permission.WRITE_EXTERNAL_STORAGE if you are creating a file which will be used as an input for image(captured via camera).
I'm trying to write code to send an SMS from an Android app, but when I try to send the SMS it sends me back the error:
09-17 18:37:29.974 12847-12847/**.**.****E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: **.**.****, PID: 12847
java.lang.SecurityException: Sending SMS message: uid 10092 does not have android.permission.SEND_SMS.
at android.os.Parcel.readException(Parcel.java:1599)
at android.os.Parcel.readException(Parcel.java:1552)
at com.android.internal.telephony.ISms$Stub$Proxy.sendTextForSubscriber(ISms.java:768)
at android.telephony.SmsManager.sendTextMessageInternal(SmsManager.java:310)
at android.telephony.SmsManager.sendTextMessage(SmsManager.java:293)
at **.**.****.MainActivity$3.onClick(MainActivity.java:70)
at android.view.View.performClick(View.java:5198)
at android.view.View$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)
I checked but I have the permissions in the manifest, as follows:
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-feature android:name="android.hardware.telephony"
android:required="true"/>
<application
android:exported="true"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
I searched the internet but all the errors were about the <uses-permission/> syntax, could you help me please?
(the following is extracted from a blog post of mine about this)
The big reason for not getting your permission nowadays is because
your project has a targetSdkVersion of 23 or higher, and the permission
that you are requesting is "dangerous". In Android 6.0, this includes:
ACCEPT_HANDOVER
ACCESS_BACKGROUND_LOCATION
ACCESS_MEDIA_LOCATION
ACTIVITY_RECOGNITION
ANSWER_PHONE_CALLS
ACCESS_COARSE_LOCATION
ACCESS_FINE_LOCATION
ADD_VOICEMAIL
BODY_SENSORS
CALL_PHONE
CAMERA
GET_ACCOUNTS
PROCESS_OUTGOING_CALLS
READ_CALENDAR
READ_CALL_LOG
READ_CELL_BROADCASTS
READ_CONTACTS
READ_EXTERNAL_STORAGE
READ_PHONE_STATE
READ_SMS
RECEIVE_MMS
RECEIVE_SMS
RECEIVE_WAP_PUSH
RECORD_AUDIO
SEND_SMS
USE_SIP
WRITE_CALENDAR
WRITE_CALL_LOG
WRITE_CONTACTS
WRITE_EXTERNAL_STORAGE
For these permissions, not only does your targetSdkVersion 23+ app
need to have the <uses-permission> element(s), but you also have
to ask for those permissions at runtime from the user on Android 6.0+
devices, using methods like checkSelfPermission() and
requestPermissions().
As a temporary workaround, drop your targetSdkVersion below 23.
However, eventually, you will have some reason to want your
targetSdkVersion to be 23 or higher. At that time, you will need
to adjust your app to use the new runtime permission system.
The Android documentation has
a page dedicated to this topic.
Above API level 23 you will be given programmatically pragmatically like:
private static final int PERMISSION_REQUEST_CODE = 1;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.SEND_SMS)
== PackageManager.PERMISSION_DENIED) {
Log.d("permission", "permission denied to SEND_SMS - requesting it");
String[] permissions = {Manifest.permission.SEND_SMS};
requestPermissions(permissions, PERMISSION_REQUEST_CODE);
}
}
Please go through the link below,
https://developer.android.com/guide/topics/permissions/overview.html
Some samples are also available there to get start with the permissions.
To make android more secure now developers has to mention permission in manifest as well as they should have to ask user as well in run time to get the work done. They are permission categorized in dangerous permission section which are mention below
CALENDAR
READ_CALENDAR
WRITE_CALENDAR
CAMERA
CAMERA
CONTACTS
READ_CONTACTS
WRITE_CONTACTS
GET_ACCOUNTS
LOCATION
ACCESS_FINE_LOCATION
ACCESS_COARSE_LOCATION
MICROPHONE
RECORD_AUDIO
PHONE
READ_PHONE_STATE
READ_PHONE_NUMBERS
CALL_PHONE
ANSWER_PHONE_CALLS (must request at runtime)
READ_CALL_LOG
WRITE_CALL_LOG
ADD_VOICEMAIL
USE_SIP
PROCESS_OUTGOING_CALLS
ANSWER_PHONE_CALLS
SENSORS
BODY_SENSORS
SMS
SEND_SMS
RECEIVE_SMS
READ_SMS
RECEIVE_WAP_PUSH
RECEIVE_MMS
STORAGE
READ_EXTERNAL_STORAGE
WRITE_EXTERNAL_STORAGE
request permission pragmatically (after API 23)
if (ContextCompat.checkSelfPermission(thisActivity, Manifest.permission.SEND_SMS)
!= PackageManager.PERMISSION_GRANTED) {
// Permission is not granted
// Ask for permision
ActivityCompat.requestPermissions(this,new String[] { Manifest.permission.SEND_SMS}, 1);
}
else {
// Permission has already been granted
}
"If the app has the permission, the method checkSelfPermission() returns PERMISSION_GRANTED, and the app can proceed with the operation.
If the app does not have the permission, the method returns PERMISSION_DENIED, and the app has to explicitly ask the user for permission. You need to prompt the user for that permission, as shown in the above code. Calling requestPermissions() brings up a standard Android dialog, which you cannot customize."
If you are using sdk 23 or higher then you must check run time permissions.
when you declare permisson in Manifest and it's not work means you are performing Task in MarshMallow and for MarshMallow you have set Permisson at RunTime.
like this way
ActivityCompat.requestPermissions();
If you are using Android version "23" or "23+", then app will show you errors when you are trying to access anything which requires user's permission. You have to ask for permissions at run-time even if you have declared those permissions in Android manifest.
Check this: https://developer.android.com/training/permissions/requesting.html
But if you have created your whole application and don't want to change at every place then a little cheat will be sufficient.
Go to "Build.gradle" file and change the target Sdk version to less than 23, like 22, 21.
Along with CommonsWare's answer,
There is a Security Setting (I checked on CM13) to set SMS Message Limit. If you set this to "None", OS will popup a Dialog for every SMS, even after obtaining SMS_SEND permission in the runtime. Best thing is to set this to maximum.
If the maximum is not enough, there are ways to increases the maximum rate on a rooted device.
I added this to my MainActivity, that resolve my problem
int MY_PERMISSIONS_REQUEST_READ_CONTACTS=0;
// Here, thisActivity is the current activity
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.WRITE_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
// Show an expanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
MY_PERMISSIONS_REQUEST_READ_CONTACTS);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
}
}
I hope the solution to write to external storage will be useful too
public boolean checkPermission() {
if (Build.VERSION.SDK_INT >= 23) {
if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_GRANTED) {
Timber.tag(LOG_TAG).e("Permission error. You have permission");
return true;
} else {
Timber.tag(LOG_TAG).e("Permission error. You have asked for permission");
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
return false;
}
}
else {
// for a stuff below api level 23
Timber.tag(LOG_TAG).e("Permission error. You already have the permission");
return true;
}
}
So i had to create an app to send and receive messages but the send action crashed whenever i clicked on send even though the permission was granted . I had requested runtime permissions and allowed them, still i faced a crash that the process doesnt have the requested permission to send SMS .
I had checked the granted permissions from :
adb shell dumpsys package <package-name>
The order of my request for permissions was
RECEIVE_SMS
SEND_SMS
I reverted the order of request and it works fine . This was tested with a complete new app(uninstall-> install -> test). The answer may seem weird but just give it a shot .
(If it works in the shown way in a certain order, then Android might have a bug!!)
I have added uses-permission including WRITE_EXTERNAL_STORAGE，MOUNT_UNMOUNT_FILESYSTEMS，READ_EXTERNAL_STORAGE to AndroidManifest.xml.
When I tried to run my application in Nexus5 (Android 6.0),it threw a exception as below:
java.io.IOException: open failed: EACCES (Permission denied)
And I tried another Android phone(Android 5.1),everything was OK.Here's the code:
private File createImageFile() throws IOException {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(imageFileName, ".jpg", storageDir);
currentPhotoPath = image.getAbsolutePath();
return image;
}
Does Android 6.0 have difference about permission?
Android added new permission model for Android 6.0 (Marshmallow).
http://www.captechconsulting.com/blogs/runtime-permissions-best-practices-and-how-to-gracefully-handle-permission-removal
So you have to check Runtime Permission :
What Are Runtime Permissions?
With Android 6.0 Marshmallow, Google introduced a new permission model that allows users to better understand why an application may be requesting specific permissions. Rather than the user blindly accepting all permissions at install time, the user is now prompted to accept permissions as they become necessary during application use.
When to Implement the New Model?
it doesn’t require full support until you choose to target version 23 in your application. If you are targeting version 22 or below, your application will request all permissions at install time just as it would on any device running an OS below Marshmallow.
This information is taken from here :
Please check How to implement from this link :
http://www.captechconsulting.com/blogs/runtime-permissions-best-practices-and-how-to-gracefully-handle-permission-removal
In Android 6(Marshmallow), even though the user accepted all your permissions at install time, they can later decide to take some of those permissions away from you.
Fast solution but not recommended: maybe if you change your targetSdkVersion in the gradle to 22, the problem will be solved.
How To Implement?(Best Practices)
First determine if the user’s device is a Marshmallow device or not:
private boolean shouldAskPermission(){
return(Build.VERSION.SDK_INT>Build.VERSION_CODES.LOLLIPOP_MR1);
}
If shouldAskPermission() return true, ask for permission you need:
String[] perms = {"android.permission.WRITE_EXTERNAL_STORAGE"};
int permsRequestCode = 200;
requestPermissions(perms, permsRequestCode);
The method requestPermissions(String[] permissions, int requestCode); is a public method found inside of the Android Activity class.
You will receive the results of your request in the method onRequestPermissionResult as shown below:
#Override
public void onRequestPermissionsResult(int permsRequestCode, String[] permissions, int[] grantResults){
switch(permsRequestCode){
case 200:
boolean writeAccepted = grantResults[0]==PackageManager.PERMISSION_GRANTED;
break;
}
}
After receiving the results, you will need to handle them appropriately.
Suggested Permissions Flow:
More Info:
A user with a Marshmallow device will now have the ability to revoke dangerous permissions via the application settings
Android defines some permissions as “dangerous” and some permissions as “normal.” Both are required in your application’s manifest but only dangerous permissions require a runtime request.
If you have chosen not to implement the new permissions model(runtime request), the revocation of permissions can cause unwanted user experiences and in some cases application crashes.
The table below lists all the current dangerous permissions and their respective groups:
If the user accepts one permission in a group/category they accept the entire group!
Source:http://www.captechconsulting.com
Using Dexter Library:
You can use Dexter. Android library that simplifies the process of requesting permissions at runtime.
You can also use ActivityCompat.requestPermissions for backwards compatible.
example:
private static final int REQUEST_CODE = 0x11;
String[] permissions = {"android.permission.WRITE_EXTERNAL_STORAGE"};
ActivityCompat.requestPermissions(this, permissions, REQUEST_CODE); // without sdk version check
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == REQUEST_CODE) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// save file
} else {
Toast.makeText(getApplicationContext(), "PERMISSION_DENIED", Toast.LENGTH_SHORT).show();
}
}
}
From API-23 you need to declare the permission in activity even if you have already declared in manifest.
// Storage Permissions variables
private static final int REQUEST_EXTERNAL_STORAGE = 1;
private static String[] PERMISSIONS_STORAGE = {
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
};
//persmission method.
public static void verifyStoragePermissions(Activity activity) {
// Check if we have read or write permission
int writePermission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
int readPermission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_EXTERNAL_STORAGE);
if (writePermission != PackageManager.PERMISSION_GRANTED || readPermission != PackageManager.PERMISSION_GRANTED) {
// We don't have permission so prompt the user
ActivityCompat.requestPermissions(
activity,
PERMISSIONS_STORAGE,
REQUEST_EXTERNAL_STORAGE
);
}
}
To use simply call verifyStoragePermissions(this); in onCreate.
That should do it hopefully.
If you are lazy, just downgrade targetSdkVersion to 22 (before lollipop)
This worked for me.
Go to Settings -> Applications -> YourApp -> Provide permissions to Storage, Contacts etc.
Google has a new feature on Android Q: filtered view for external storage. A quick fix for that is to add this code in the AndroidManifest.xml file:
<manifest ... >
<!-- This attribute is "false" by default on apps targeting Android Q. -->
<application android:requestLegacyExternalStorage="true" ... >
...
</application>
</manifest>
You can read more about it here: https://developer.android.com/training/data-storage/compatibility
For me, my phone connected as USB as MTP was the issue even after doing everything stated here. Switched it to "Charging Only" worked for me.
I met the same trouble.
Maybe it is caused by your phone security mechanism. You may go to 'settings' to authorize write/read permissions.