使用类名启动活动Android
我正在使用以下代码开始设置我想启动设置活动,这是由android ins启动的使用类名启动活动Android,android,android-activity,classname,Android,Android Activity,Classname,我正在使用以下代码开始设置我想启动设置活动,这是由android ins启动的 PackageList allowedAppsPackageName=CallHelper.Ds.getPackageList(); PackageManager manager = CallDetectService.packageManager; Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
PackageList allowedAppsPackageName=CallHelper.Ds.getPackageList();
PackageManager manager = CallDetectService.packageManager;
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
final List<ResolveInfo> apps = manager.queryIntentActivities(mainIntent, 0);
Collections.sort(apps, new ResolveInfo.DisplayNameComparator(manager));
final int count = apps.size();
ResolveInfo info=new ResolveInfo();;
GridViewAppList.clear();
for (int i = 0; i < count; i++)
{
info= apps.get(i);
if(info.activityInfo.applicationInfo.packageName.contains("setting"))
break;
}
ApplicationInfo application = new ApplicationInfo();
application.title = info.loadLabel(manager);
application.setActivity(new ComponentName(
packageName,
info.activityInfo.name),
Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
application.icon = info.activityInfo.loadIcon(manager);
application.packagename=packageName;
Log.i("PKG", application.packagename+" "+packageName+" "+info.activityInfo.name);
GridViewAppList.add(application);
PackageList允许appspackagename=CallHelper.Ds.getPackageList();
PackageManager manager=CallDetectService.PackageManager;
意图maintent=新意图(Intent.ACTION\u MAIN,空);
mainIntent.addCategory(Intent.CATEGORY_启动器);
最终列表apps=manager.querytentActivities(maintent,0);
Collections.sort(应用程序、新的ResolveInfo.DisplayNameComparator(管理器));
最终整数计数=apps.size();
ResolveInfo=新的ResolveInfo();;
GridViewAppList.clear();
for(int i=0;i
您可以使用此代码段打开设置
活动:
Intent intent=new Intent();
intent.setComponent(new ComponentName("com.android.settings", "com.android.settings.Settings"));
startActivity(intent);
如果您不知道必须打开什么活动,您可以找到它的名称和我提到的包名称。类中有许多动作常量,可用于创建意图,为提供的子设置启动活动,或根据动作启动设置应用程序 例如:
intent = new Intent(Settings.ACTION_SETTINGS); // ACTION_SETTINGS will start the Settings app
intent = new Intent(Settings.ACTION_WIFI_SETTINGS); // ACTION_WIFI_SETTINGS will show the WiFi settings
如果我知道类名,这是k,但是如果我不知道怎么办?