本人第一次寫博客,目的就是爲了記錄自己的一步步成長,肯定有想的不周到的地方,希望大家批評指教~~
有時候,我們想做一個功能需求的時候,在網上找相關資料,總是找不到想要的,所以我就想到了用博客來記錄和整理自己發現的新東西,話不多說,直接擼代碼~
//判斷當前是不是桌面
public static boolean isHome(Context context) {
String topPackageName = getTopActivityName(context);
//此處做了判斷如果得到的是null的話就返回一個true
return topPackageName == null ? true : getHomesPackageName(context).contains(topPackageName);
}
//得到桌面的包名,包括第三方桌面
private static List<String> getHomesPackageName(Context context) {
List<String> homePackageNames = new ArrayList<>();
PackageManager packageManager = context.getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
List<ResolveInfo> resolveInfo = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo info : resolveInfo) {
homePackageNames.add(info.activityInfo.packageName);
}
return homePackageNames;
}
//得到棧頂Activity的名字,注意此處要進行判斷,Android在5.0以後Google把getRunningTasks的方法給屏蔽掉了,所以要分開處理
private static String getTopActivityName(Context context) {
String topActivityPackageName;
ActivityManager manager = (ActivityManager) context.getSystemService(context.ACTIVITY_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
//此處要判斷用戶的安全權限有沒有打開,如果打開了就進行獲取棧頂Activity的名字的方法
//當然,我們的要求是如果沒打開就不獲取了,要不然跳轉會影響用戶的體驗
if (isSecurityPermissionOpen(context)) {
UsageStatsManager mUsageStatsManager = (UsageStatsManager) context.getSystemService(Context.USAGE_STATS_SERVICE);
long endTime = System.currentTimeMillis();
long beginTime = endTime - 1000 * 60 * 2;
UsageStats recentStats = null;
List<UsageStats> queryUsageStats = mUsageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_BEST, beginTime, endTime);
if (queryUsageStats == null || queryUsageStats.isEmpty()) {
return null;
}
for (UsageStats usageStats : queryUsageStats) {
if (recentStats == null || recentStats.getLastTimeUsed() < usageStats.getLastTimeUsed()) {
recentStats = usageStats;
}
}
topActivityPackageName = recentStats.getPackageName();
return topActivityPackageName;
} else {
return null;
}
} else {
List<ActivityManager.RunningTaskInfo> taskInfos = manager.getRunningTasks(1);
if (taskInfos.size() > 0)
topActivityPackageName = taskInfos.get(0).topActivity.getPackageName();
else
return null;
return topActivityPackageName;
}
}
//判斷用戶對應的安全權限有沒有打開
private static boolean isSecurityPermissionOpen(Context context) {
long endTime = System.currentTimeMillis();
UsageStatsManager usageStatsManager = (UsageStatsManager) context.getApplicationContext().getSystemService("usagestats");
List<UsageStats> queryUsageStats = usageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_BEST, 0, endTime);
if (queryUsageStats == null || queryUsageStats.isEmpty()) {
return false;
}
return true;
}
//此處是跳轉安全權限的跳轉代碼,如果你判斷用戶沒有開啓權限的話可以選擇跳轉,此處標明~~~
//Intent intent = new Intent(Settings.ACTION_USAGE_ACCESS_SETTINGS);
//startActivity(intent);
僅供產考,歡迎指導~