大家讲道理2017-04-17 17:41:14
透過包名啟動
private void doStartApplicationWithPackageName(String packagename) {
// 通过包名获取此APP详细信息,包括Activities、services、versioncode、name等等
PackageInfo packageinfo = null;
try {
packageinfo = getPackageManager().getPackageInfo(packagename, 0);
} catch (NameNotFoundException e) {
e.printStackTrace();
}
if (packageinfo == null) {
return;
}
// 创建一个类别为CATEGORY_LAUNCHER的该包名的Intent
Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
resolveIntent.setPackage(packageinfo.packageName);
// 通过getPackageManager()的queryIntentActivities方法遍历
List<ResolveInfo> resolveinfoList = getPackageManager()
.queryIntentActivities(resolveIntent, 0);
ResolveInfo resolveinfo = resolveinfoList.iterator().next();
if (resolveinfo != null) {
// packagename = 参数packname
String packageName = resolveinfo.activityInfo.packageName;
// 这个就是我们要找的该APP的LAUNCHER的Activity[组织形式:packagename.mainActivityname]
String className = resolveinfo.activityInfo.name;
// LAUNCHER Intent
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
// 设置ComponentName参数1:packagename参数2:MainActivity路径
ComponentName cn = new ComponentName(packageName, className);
intent.setComponent(cn);
startActivity(intent);
}
}
如果需要切換應用的話就需要使用getRunningTasks獲取正在運行的應用,判斷要打開的包名是否在這個列表裡,如果在的話就利用activityManager的moveTaskToFront方法把應用移到棧頂
ActivityManager mAm = (ActivityManager) context.getSystemService(context.ACTIVITY_SERVICE);
List<ActivityManager.RunningTaskInfo> taskList = mAm.getRunningTasks(100);
for (ActivityManager.RunningTaskInfo rti : taskList) {
//找到当前应用的task,并启动task的栈顶activity,达到程序切换到前台
if(rti.topActivity.getPackageName().equals(context.getPackageName())) {
mAm.moveTaskToFront(rti.id,0);
return;
}
}