tôi làm việc đó một cách dưới đây:
1- Tạo một helper Boolean để kiểm tra quyền được cấp:
public class UtilPermissions {
public static boolean hasPermissions(Context context, String... allPermissionNeeded)
{
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
&& context != null && allPermissionNeeded != null)
for (String permission : allPermissionNeeded)
if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED)
return false;
return true;
}
}
2- Tạo một Splash màn hình như:
public class Splash extends Activity {
private static final int PERMISSION_ALL = 0;
private Handler h;
private Runnable r;
/*
SharedPreferences mPrefs;
final String settingScreenShownPref = "settingScreenShown";
final String versionCheckedPref = "versionChecked";
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
h = new Handler();
r = new Runnable() {
@Override
public void run() {
Toast.makeText(Splash.this, "Runnable started", Toast.LENGTH_SHORT).show();
/* // (OPTIONAL) these lines to check if the `First run` ativity is required
int versionCode = BuildConfig.VERSION_CODE;
String versionName = BuildConfig.VERSION_NAME;
mPrefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
SharedPreferences.Editor editor = mPrefs.edit();
Boolean settingScreenShown = mPrefs.getBoolean(settingScreenShownPref, false);
int savedVersionCode = mPrefs.getInt(versionCheckedPref, 1);
if (!settingScreenShown || savedVersionCode != versionCode) {
startActivity(new Intent(Splash.this, FirstRun.class));
editor.putBoolean(settingScreenShownPref, true);
editor.putInt(versionCheckedPref, versionCode);
editor.commit();
}
else
*/
startActivity(new Intent(Splash.this, MainActivity.class));
finish();
}
};
String[] PERMISSIONS = {
READ_PHONE_STATE,
MODIFY_AUDIO_SETTINGS,
ACCESS_FINE_LOCATION,
READ_SMS
};
if(!UtilPermissions.hasPermissions(this, PERMISSIONS)){
ActivityCompat.requestPermissions(this, PERMISSIONS, PERMISSION_ALL);
}
else
h.postDelayed(r, 1500);
}
// Put the below OnRequestPermissionsResult code here
}
3- Đã tạo OnRequestPermissionsResult như sau:
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
int index = 0;
Map<String, Integer> PermissionsMap = new HashMap<String, Integer>();
for (String permission : permissions){
PermissionsMap.put(permission, grantResults[index]);
index++;
}
if((PermissionsMap.get(ACCESS_FINE_LOCATION) != 0)
|| PermissionsMap.get(READ_SMS) != 0){
Toast.makeText(this, "Location and SMS permissions are a must", Toast.LENGTH_SHORT).show();
finish();
}
else
{
h.postDelayed(r, 1500);
}
}
4- định nghĩa màn hình Splash như Launcher trong AndroidManifest.xml như:
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
</activity>
<activity
android:name=".Splash"
android:configChanges="orientation|keyboardHidden|screenSize"
android:theme="@style/SplashTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
5- Trong styles.xml xác định SplashTheme như:
<style name="SplashTheme" parent="Theme.AppCompat.NoActionBar">
<item name="android:windowBackground">@drawable/Splash</item>
</style>
6- Các @drawable/Splash.xmls là:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:drawable="@color/lightgray"/>
<item>
<bitmap
android:gravity="center"
android:src="@mipmap/ic_launcher"/>
</item>
</layer-list>
7- Trong values/colors.xmls các lightgray màu đã được xác định như sau:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="lightgray">#D3D3D3</color>
</resources>
Chỉ cần ghi đè onRequestPermissionsResult() –
Cảm ơn bạn rất nhiều, tôi did't biết về phương pháp này – AsfK