目前测试有些手机，有更好的方案，请留言
1：在应用里面manifest文件添加必须权限
<uses-permission android:name="android.permission.REORDER_TASKS" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
2：方法
import android.app.ActivityManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.util.Log;
import java.util.List;
import static android.content.Context.ACTIVITY_SERVICE;
public class TgSystem {
public static void startService(Context context, Intent intent) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
//android8.0以上通过startForegroundService启动service
context.startForegroundService(intent);
} else {
context.startService(intent);
}
}
/**
* 判断本地是否已经安装好了指定的应用程序包
*
* @param packageNameTarget ：待判断的 App 包名，如 微博 com.sina.weibo
* @return 已安装时返回 true,不存在时返回 false
*/
public static boolean appIsExist(Context context, String packageNameTarget) {
if (packageNameTarget == null || packageNameTarget.isEmpty()) {
return false;
}
PackageManager packageManager = context.getPackageManager();
List<PackageInfo> packageInfoList = packageManager.getInstalledPackages(PackageManager.MATCH_UNINSTALLED_PACKAGES);
for (PackageInfo packageInfo : packageInfoList) {
if (packageInfo.packageName.equals(packageNameTarget)) {
return true;
}
}
return false;
}
//当本应用位于后台时，则将它切换到最前端
public static void setTopApp(Context context) {
if (isRunningForeground(context)) {
return;
}
//获取ActivityManager
ActivityManager activityManager = (ActivityManager) context.getSystemService(ACTIVITY_SERVICE);
//获得当前运行的task(任务)
List<ActivityManager.RunningTaskInfo> taskInfoList = activityManager.getRunningTasks(100);
for (ActivityManager.RunningTaskInfo taskInfo : taskInfoList) {
//找到本应用的 task，并将它切换到前台
if (taskInfo.topActivity.getPackageName().equals(context.getPackageName())) {
activityManager.moveTaskToFront(taskInfo.id, 0);
break;
}
}
}
//判断本应用是否已经位于最前端：已经位于最前端时，返回 true；否则返回 false
public static boolean isRunningForeground(Context context) {
ActivityManager activityManager = (ActivityManager) context.getSystemService(ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> appProcessInfoList = activityManager.getRunningAppProcesses();
for (ActivityManager.RunningAppProcessInfo appProcessInfo : appProcessInfoList) {
if (appProcessInfo.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND
&& appProcessInfo.processName.equals(context.getApplicationInfo().processName)) {
return true;
}
}
return false;
}
public static void startLocalApp(Context context,String packageNameTarget) {
Log.e("111", "-----------------------开始启动第三方 APP=" + packageNameTarget);
if (appIsExist(context, packageNameTarget)) {
PackageManager packageManager = context.getPackageManager();
Intent intent = packageManager.getLaunchIntentForPackage(packageNameTarget);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED | Intent.FLAG_ACTIVITY_NEW_TASK);
/**android.intent.action.MAIN：打开另一程序
*/
intent.setAction("android.intent.action.MAIN");
/**
* FLAG_ACTIVITY_SINGLE_TOP:
* 如果当前栈顶的activity就是要启动的activity,则不会再启动一个新的activity
*/
intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
context.startActivity(intent);
Log.e("111","启动");
} else {
Log.e("111", "-----------------------未安装" + packageNameTarget);
}
}
}
import android.Manifest
import android.annotation.SuppressLint
import android.content.Context
import android.content.Intent
import android.graphics.Color
import android.os.Bundle
import android.os.CountDownTimer
import android.text.*
import android.text.style.ForegroundColorSpan
import android.util.Log
import androidx.appcompat.app.AppCompatActivity
import com.dsy.tui.tools.TgSystem
import com.dsy.tui.view.MyImageSpan
import com.tbruyelle.rxpermissions2.RxPermissions
import kotlinx.android.synthetic.main.activity_text_view.*
class TextActivity : AppCompatActivity() {
private fun startLocalApp(packageNameTarget: String) {
Log.e("111", "-----------------------开始启动第三方 APP=$packageNameTarget")
if (TgSystem.appIsExist(TextActivity@this, packageNameTarget)) {
val packageManager = packageManager
val intent = packageManager.getLaunchIntentForPackage(packageNameTarget)
intent!!.addCategory(Intent.CATEGORY_LAUNCHER)
intent.flags =
Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED or Intent.FLAG_ACTIVITY_NEW_TASK
intent.flags = Intent.FLAG_ACTIVITY_SINGLE_TOP
startActivity(intent)
Log.e("111","唤醒")
} else {
Log.e("111","被启动的 APP 未安装")
}
}
var timer:CountDownTimer? = null
@SuppressLint("CheckResult")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_text_view)
RxPermissions(this)
.request(
Manifest.permission.REORDER_TASKS
).subscribe {
}
timer = object : CountDownTimer(3000, 1000) {
override fun onFinish() {
runOnUiThread {
Log.e("111", "走你")
startLocalApp("com.dsy.tui")
TgSystem.setTopApp(this@TextActivity);
}
}
override fun onTick(p0: Long) {
}
}
override fun onStop() {
super.onStop()
Log.e("111","stop")
timer?.start()
}
}
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