import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AppOpsManager;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.os.Build;
import android.provider.Settings;
 
import android.support.annotation.RequiresApi;
import android.support.v4.app.FragmentManager;
import com.tiangui.customView.CustomDialog;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
 * 檔案描述：通知的許可權檢查類
 * 作者：Created by BiJingCun on 2018/6/5.
 
 */
public class NotificationsUtils {
    private static final String CHECK_OP_NO_THROW = "checkOpNoThrow";
    private static final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";
    public static boolean notificationIsOpen(Context context) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT
 
) {//API19+
return notificationCheckFor19Up(context);
}
        return false;
}

    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
    private static boolean notificationCheckFor19Up(Context context) {
        AppOpsManager appOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
ApplicationInfo applicationInfo = context.getApplicationInfo();
String pkg = context.getApplicationContext().getPackageName();
        int uid = applicationInfo.uid;
Class appOpsClass;
        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 op = (int) opPostNotificationValue.get(Integer.class);
            return ((int) checkOpNoThrowMethod.invoke(appOpsManager, op, uid, pkg) == AppOpsManager.MODE_ALLOWED);
} catch (Exception e) {
            e.printStackTrace();
}
        return true;
}

    public interface NotificationCheckResultListener {
        void checkResult(boolean hasOpenNotification);
}

    public static void checkNotificationOpend(final Activity context,
NotificationCheckResultListener listener,
                                              boolean jump2Setting) {
        if (notificationIsOpen(context)) {
            if (null != listener) {
                listener.checkResult(true);
}
        } else {
            if (jump2Setting) {
                //彈窗處理修改預設地址
new CustomDialog.Builder(context, 2)
                        .setBody("溫馨提示：去開通通知狀態許可權")
                        .setCancleText("取消")
                        .setOKText("確定")
                        .setOkOnClickListener(new DialogInterface.OnClickListener() {
                            @Override
public void onClick(DialogInterface dialog, int which) {
                                Intent intent = new Intent(Settings.ACTION_SETTINGS);
context.startActivity(intent);
}
                        })
                        .setCancleOnClickListener(new DialogInterface.OnClickListener() {
                            @Override
public void onClick(DialogInterface dialog, int which) {
                                dialog.dismiss();
}
                        }).creatDialog().show();
} else {
                listener.checkResult(false);
}
        }
    }
}