android打开应用自动检测权限,Android 应用获取通知栏权限是否开启，并跳转设置界面...

因为项目要用到推送功能，所以需要知道用户是否开启了通知栏的权限，并且可以方便直接跳转到权限设置以便用户进行开启。

获取权限工具类

public class NotificationsUtils {

private static final String CHECK_OP_NO_THROW = "checkOpNoThrow";

private static final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";

@SuppressLint("NewApi")

public static boolean isNotificationEnabled(Context context) {

AppOpsManager mAppOps =

(AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);

ApplicationInfo appInfo = context.getApplicationInfo();

String pkg = context.getApplicationContext().getPackageName();

int uid = appInfo.uid;

Class appOpsClass = null;

/* Context.APP_OPS_MANAGER */

try {

appOpsClass = Class.forName(AppOpsManager.class.getName());

Method checkOpNoThrowMethod =

appOpsClass.getMethod(CHECK_OP_NO_THROW,

Integer.TYPE, Integer.TYPE, String.class);

Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);

int value = (Integer) opPostNotificationValue.get(Integer.class);

return ((Integer) checkOpNoThrowMethod.invoke(mAppOps, value, uid, pkg) ==

AppOpsManager.MODE_ALLOWED);

} catch (Exception e) {

e.printStackTrace();

}

return false;

}

}

跳转到应用权限设置界面

if (!NotificationsUtils.isNotificationEnabled(this)) {

final AlertDialog dialog = new AlertDialog.Builder(this).create();

dialog.show();

View view = View.inflate(this, R.layout.dialog, null);

dialog.setContentView(view);

TextView context = (TextView) view.findViewById(R.id.tv_dialog_context);

context.setText("检测到您没有打开通知权限，是否去打开");

TextView confirm = (TextView) view.findViewById(R.id.btn_confirm);

confirm.setText("确定");

confirm.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

dialog.cancel();

Intent localIntent = new Intent();

localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

if (Build.VERSION.SDK_INT >= 9) {

localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");

localIntent.setData(Uri.fromParts("package", MainActivity.this.getPackageName(), null));

} else if (Build.VERSION.SDK_INT <= 8) {

localIntent.setAction(Intent.ACTION_VIEW);

localIntent.setClassName("com.android.settings",

"com.android.settings.InstalledAppDetails");

localIntent.putExtra("com.android.settings.ApplicationPkgName",

MainActivity.this.getPackageName());

}

startActivity(localIntent);

}

});

TextView cancel = (TextView) view.findViewById(R.id.btn_off);

cancel.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

dialog.cancel();

}

});

}