前言
開啓服務,監視正在運行的應用。這個在Android的高版本中(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
)顯得比較複雜一些。在低版本中實現起來比較容易。這裏介紹在5.0以上版本的實現。
Android5.0以上需要開啓“有權查看使用情況的應用”
首先檢測設備是否有“有權查看使用情況的應用”
private boolean isNoOption() {
PackageManager packageManager = getApplicationContext()
.getPackageManager();
Intent intent = new Intent(Settings.ACTION_USAGE_ACCESS_SETTINGS);
List<ResolveInfo> list = packageManager.queryIntentActivities(intent,
PackageManager.MATCH_DEFAULT_ONLY);
return list.size() > 0;
}
如果有“有權查看使用情況的應用”判斷是否開啓
private boolean isNoSwitch() {
long ts = System.currentTimeMillis();
UsageStatsManager usageStatsManager = (UsageStatsManager) getApplicationContext()
.getSystemService("usagestats");
List<UsageStats> queryUsageStats = usageStatsManager.queryUsageStats(
UsageStatsManager.INTERVAL_BEST, 0, ts);
if (queryUsageStats == null || queryUsageStats.isEmpty()) {
return false;
}
return true;
}
如果沒有開啓,則跳轉至開啓界面
if (isNoOption()) {
buttonGuide.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(
Settings.ACTION_USAGE_ACCESS_SETTINGS);
startActivity(intent);
}
});
添加權限
<uses-permission
android:name="android.permission.PACKAGE_USAGE_STATS"
tools:ignore="ProtectedPermissions" />
以上部分參考了Android 5.0以後版本打開“有權查看使用情況的應用”在此表示感謝
代碼實現查看正在運行的應用包名
public static String getTopAppName(Context context) {
ActivityManager mActivityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
String strName = "";
try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
strName = getLollipopFGAppPackageName(context);
} else {
strName = mActivityManager.getRunningTasks(1).get(0).topActivity.getClassName();
}
} catch (Exception e) {
e.printStackTrace();
}
return strName;
}
private static String getLollipopFGAppPackageName(Context ctx) {
try {
UsageStatsManager usageStatsManager = (UsageStatsManager) ctx.getSystemService("usagestats");
long milliSecs = 60 * 1000;
Date date = new Date();
List<UsageStats> queryUsageStats = usageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_DAILY, date.getTime() - milliSecs, date.getTime());
if (queryUsageStats.size() > 0) {
Log.i("LPU", "queryUsageStats size: " + queryUsageStats.size());
}
long recentTime = 0;
String recentPkg = "";
for (int i = 0; i < queryUsageStats.size(); i++) {
UsageStats stats = queryUsageStats.get(i);
if (i == 0 && !"org.pervacio.pvadiag".equals(stats.getPackageName())) {
Log.i("LPU", "PackageName: " + stats.getPackageName() + " " + stats.getLastTimeStamp());
}
if (stats.getLastTimeStamp() > recentTime) {
recentTime = stats.getLastTimeStamp();
recentPkg = stats.getPackageName();
}
}
return recentPkg;
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
以上知識感謝how to getTopActivity name or get current running application package name in lollipop?