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在打开app的时候,提示用户打开通知设置页面 , 首先我们要判断是否开启了当前应用的通知
package com.example.notificationtest;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.AppOpsManager;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.os.Build;
import android.os.Bundle;
import android.widget.TextView;
@TargetApi(Build.VERSION_CODES.KITKAT)
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView tvHint = (TextView) findViewById(R.id.tvHint);
tvHint.setText("通知开关是否打开-->" + isNotificationEnable(this));
}
/*
* 判断通知权限是否打开
*/
private boolean isNotificationEnable(Context context) {
AppOpsManager mAppOps = (AppOpsManager) context.getSystemService(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("checkOpNoThrow", Integer.TYPE, Integer.TYPE, String.class);
Field opPostNotificationValue = appOpsClass.getDeclaredField("OP_POST_NOTIFICATION");
int value = (int)opPostNotificationValue.get(Integer.class);
return ((int)checkOpNoThrowMethod.invoke(mAppOps,value, uid, pkg) == AppOpsManager.MODE_ALLOWED);
}catch(Exception e){
e.printStackTrace();
}
return true;
}
}
这个方法很好,但是还存在缺陷。AppOpsManager这个类是api 19以上才添加的,所以android4.3以下这个方法就失效了。
据说android api 24可以使用NotificationManagerCompat.areNotificationsEnabled()来判断。查看官方Api,确实存在这个方法,这样来判断就方便很多了。
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NotificationManagerCompat notificationManagerCompat = NotificationManagerCompat.from(context);
boolean areNotificationsEnabled = notificationManagerCompat.areNotificationsEnabled();
然后在没有打开通知的情况下,提醒用户打开设置页面,设置通知
android 跳转到应用通知设置界面的示例
4.4以下并没有提过从app跳转到应用通知设置页面的Action,可考虑跳转到应用详情页面,下面是直接跳转到应用通知设置的代码:
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Intent intent = new Intent();
intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
intent.putExtra("app_package", getActivity().getPackageName());
intent.putExtra("app_uid", getActivity().getApplicationInfo().uid);
startActivity(intent);
} else if (android.os.Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setData(Uri.parse("package:" + getActivity().getPackageName()));
startActivity(intent);
}
跳转到应用详情页面的代码如下
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", getActivity().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", getActivity().getPackageName());
}
startActivity(localIntent);
对于检测app是否开启通知,同样是针对4.4以上的系统才有效:
NotificationManagerCompat manager = NotificationManagerCompat.from(App.getInstance().getContext());
boolean isOpened = manager.areNotificationsEnabled();
4.4以下调用该方法并不会出错,只是全部返回true,默认开启状态
Android判断APP通知权限是否打开
场景:判断用户是否屏蔽了应用的推送权限
NotificationManagerCompat.from(context).areNotificationsEnabled()