Supagarn Supagarn - 2 months ago 15
Android Question

StartActivity call requires permissions problems

{I follow this video} Previously, It no problems .

Today I try again , but it has the same problem with
.this picture

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.fooddeliverycaller">


<uses-permission android:name="android.permission.CALL_PHONE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

<uses-sdk
android:minSdkVersion="15"
android:targetSdkVersion="24" />


<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">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version"/>

<activity android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"/>
</application>

Answer

After API 23, User has to explicitly give approval to any permission that may access user's confidential data. Such permissions contains Calendar, Camera, Contact, Location, Microphone, Phone, Sensor, SMS, Storage.

Below is the code I taken from Documentation with some modification.

private void callNumber() {

    if (ContextCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE)
            != PackageManager.PERMISSION_GRANTED) {
        // Should we show an explanation?
        if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                Manifest.permission.CALL_PHONE)) {
              // 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.CALL_PHONE},
                    MY_PERMISSIONS_REQUEST_READ_CONTACTS);

        }
    } else {
        //This is for lower version <23
        Intent callIntent = new Intent(Intent.ACTION_DIAL);
        callIntent.setData(Uri.parse("tel:" + MyCellNumber);
        startActivity(callIntent);
    }
}

And then override below method

@Override
public void onRequestPermissionsResult(int requestCode,
                                       String permissions[], int[] grantResults) {
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
            // If request is cancelled, the result arrays are empty.
            if (grantResults.length > 0
                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                Intent callIntent = new Intent(Intent.ACTION_DIAL);
                callIntent.setData(Uri.parse("tel:" + MyCellNumber));
                startActivity(callIntent);
                // permission was granted, yay! Do the
                // contacts-related task you need to do.
            } else {
                // permission denied, boo! Disable the
                // functionality that depends on this permission.
            }
            return;
        }

        // other 'case' lines to check for other
        // permissions this app might request
    }
}