Intent之跳转总结

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private void toSetting() {
    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", getPackageName(), null));
    }
    startActivity(localIntent);
}

/**
 * 启动app应用的信息设置
 */
public static void startAppSettings(Context mContext) {
    Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
    intent.setData(Uri.parse("package:" + mContext.getPackageName()));
    mContext.startActivity(intent);
}

public static int getOsUid(Context context) {
    int uid = 0;
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    ApplicationInfo appinfo = context.getApplicationInfo();
    List<ActivityManager.RunningAppProcessInfo> run = am.getRunningAppProcesses();
    for (ActivityManager.RunningAppProcessInfo runningProcess : run) {
        if ((runningProcess.processName != null) && runningProcess.processName.equals(appinfo.processName)) {
            uid = runningProcess.uid;
            break;
        }
    }
    return uid;
}

/**
 * 获取通知栏开关的状态:分8.0系统之上和8.0系统之下
 * des:
 */
public static boolean isNoticeEnable(Context context) {
    boolean isNoticeEnable = false;
    String pkg = context.getPackageName();
    int uid = 0x011111;//自己获取
    if (Build.VERSION.SDK_INT >= 26) {//8.0系统之上
        isNoticeEnable=isNoticeEnableV26(context, uid);
    } else {
        isNoticeEnable=isNoticeEnableV19(context, uid);
    }
    return isNoticeEnable;
}

/**
 * des:8.0之后，提供给APP适用的的NotificationManager 类中有INotificationManager对象，最终我们通过反射获取通知栏开关
 */
private static boolean isNoticeEnableV26(Context context, int uid) {
    try {
        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        Method sServiceField = notificationManager.getClass().getDeclaredMethod("getService");
        sServiceField.setAccessible(true);
        Object sService = sServiceField.invoke(notificationManager);
        Method method = sService.getClass().getDeclaredMethod("areNotificationsEnabledForPackage", String.class, Integer.TYPE);
        method.setAccessible(true);
        return (boolean) method.invoke(sService, context.getPackageName(), uid);
    } catch (Exception e) {
        return true;
    }
}

/**
 * des:针对8.0之前设备，通过AppOpsManager的checkOpNoThrow方法获取。
 */
@TargetApi(Build.VERSION_CODES.KITKAT)
private static boolean isNoticeEnableV19(Context context, int uid) {
    try {
        String CHECK_OP_NO_THROW = "checkOpNoThrow";
        String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";
        Class appOpsClass = null;
        AppOpsManager mAppOps = null;
        mAppOps = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
        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, context.getPackageName()) == AppOpsManager.MODE_ALLOWED);
    } catch (Exception e) {
        return true;
    }
}


/**
 * 针对8.0及以上设备，发现上述方式不生效。查询系统设置源码，在NotificationBackend类中发现获取通知栏状态改到INotificationManager中了
 */
private boolean getNotificationsBanned(String pkg, int uid) {
    try {
        final boolean enabled = sINM.areNotificationsEnabledForPackage(pkg, uid);
        return !enabled;
    } catch (Exception e) {
        Log.w(TAG, "Error calling NoMan", e);
        return false;
    }
}

/**
 * 打开允许通知的设置页(跳到的是全部通知的页面，不是很理想)
 */
private void goToNotificationSetting(Context context) {
    Intent intent = new Intent();
    if (Build.VERSION.SDK_INT >= 26) { // android 8.0引导
 intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
        intent.putExtra("android.provider.extra.APP_PACKAGE", context.getPackageName());
    } else if (Build.VERSION.SDK_INT >= 21) { // android 5.0-7.0

 intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
        intent.putExtra("app_package", context.getPackageName());
        intent.putExtra("app_uid", context.getApplicationInfo().uid);
    } else { // 其他
 intent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
        intent.setData(Uri.fromParts("package", context.getPackageName(), null));
    }
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    context.startActivity(intent);
}

======== 

Intent之跳转总结

标签：man   san   app应用   except   style   out   日期时间   gets   isp   

原文地址：https://www.cnblogs.com/awkflf11/p/9484242.html