进程相关工具类

来源：互联网发布：法语网络教学视频编辑：程序博客网时间：2024/05/22 05:09

import android.app.ActivityManager;
import android.app.AppOpsManager;
import android.app.usage.UsageStats;
import android.app.usage.UsageStatsManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.provider.Settings;
import android.support.annotation.NonNull;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public final class ProcessUtils {

private ProcessUtils() {
throw new UnsupportedOperationException("u can't instantiate me...");
}

/**
* 获取前台线程包名
* 当不是查看当前App，且SDK大于21时，
* 需添加权限 {@code <uses-permission android:name="android.permission.PACKAGE_USAGE_STATS"/>}
*
* @return 前台应用包名
*/
public static String getForegroundProcessName() {
ActivityManager manager = (ActivityManager) Utils.getContext().getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> infos = manager.getRunningAppProcesses();
if (infos != null && infos.size() != 0) {
for (ActivityManager.RunningAppProcessInfo info : infos) {
if (info.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
return info.processName;
}
}
}
if (android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.LOLLIPOP) {
PackageManager packageManager = Utils.getContext().getPackageManager();
Intent intent = new Intent(Settings.ACTION_USAGE_ACCESS_SETTINGS);
List<ResolveInfo> list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
System.out.println(list);
if (list.size() > 0) {// 有"有权查看使用权限的应用"选项
try {
ApplicationInfo info = packageManager.getApplicationInfo(Utils.getContext().getPackageName(), 0);
AppOpsManager aom = (AppOpsManager) Utils.getContext().getSystemService(Context.APP_OPS_SERVICE);
if (aom.checkOpNoThrow(AppOpsManager.OPSTR_GET_USAGE_STATS, info.uid, info.packageName) != AppOpsManager.MODE_ALLOWED) {
Utils.getContext().startActivity(intent);
}
if (aom.checkOpNoThrow(AppOpsManager.OPSTR_GET_USAGE_STATS, info.uid, info.packageName) != AppOpsManager.MODE_ALLOWED) {
LogUtils.d("getForegroundApp", "没有打开\"有权查看使用权限的应用\"选项");
return null;
}
UsageStatsManager usageStatsManager = (UsageStatsManager) Utils.getContext().getSystemService(Context.USAGE_STATS_SERVICE);
long endTime = System.currentTimeMillis();
long beginTime = endTime - 86400000 * 7;
List<UsageStats> usageStatses = usageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_BEST, beginTime, endTime);
if (usageStatses == null || usageStatses.isEmpty()) return null;
UsageStats recentStats = null;
for (UsageStats usageStats : usageStatses) {
if (recentStats == null || usageStats.getLastTimeUsed() > recentStats.getLastTimeUsed()) {
recentStats = usageStats;
}
}
return recentStats == null ? null : recentStats.getPackageName();
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
} else {
LogUtils.d("getForegroundApp", "无\"有权查看使用权限的应用\"选项");
}
}
return null;
}

/**
* 获取后台服务进程
* 需添加权限 {@code <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>}
*
* @return 后台服务进程
*/
public static Set<String> getAllBackgroundProcesses() {
ActivityManager am = (ActivityManager) Utils.getContext().getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> infos = am.getRunningAppProcesses();
Set<String> set = new HashSet<>();
for (ActivityManager.RunningAppProcessInfo info : infos) {
Collections.addAll(set, info.pkgList);
}
return set;
}

/**
* 杀死所有的后台服务进程
* 需添加权限 {@code <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>}
*
* @return 被暂时杀死的服务集合
*/
public static Set<String> killAllBackgroundProcesses() {
ActivityManager am = (ActivityManager) Utils.getContext().getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> infos = am.getRunningAppProcesses();
Set<String> set = new HashSet<>();
for (ActivityManager.RunningAppProcessInfo info : infos) {
for (String pkg : info.pkgList) {
am.killBackgroundProcesses(pkg);
set.add(pkg);
}
}
infos = am.getRunningAppProcesses();
for (ActivityManager.RunningAppProcessInfo info : infos) {
for (String pkg : info.pkgList) {
set.remove(pkg);
}
}
return set;
}

/**
* 杀死后台服务进程
* 需添加权限 {@code <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>}
*
* @param packageName 包名
* @return {@code true}: 杀死成功 {@code false}: 杀死失败
*/
public static boolean killBackgroundProcesses(@NonNull String packageName) {
ActivityManager am = (ActivityManager) Utils.getContext().getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> infos = am.getRunningAppProcesses();
if (infos == null || infos.size() == 0) return true;
for (ActivityManager.RunningAppProcessInfo info : infos) {
if (Arrays.asList(info.pkgList).contains(packageName)) {
am.killBackgroundProcesses(packageName);
}
}
infos = am.getRunningAppProcesses();
if (infos == null || infos.size() == 0) return true;
for (ActivityManager.RunningAppProcessInfo info : infos) {
if (Arrays.asList(info.pkgList).contains(packageName)) {
return false;
}
}
return true;
}
}

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