我正在构建一项服务，将安装的应用程序列表从Android TV或Fire TV发送到手机。然后，手机会发回它想要启动的应用程序的程序包名称，然后服务就会启动它。
这是创建列表的代码
public List<InstalledApp> GetInstalledApps(boolean isAndroid) {
PackageManager pm = getPackageManager();
List<ApplicationInfo> allPackages = pm.getInstalledApplications(PackageManager.GET_META_DATA);
List<InstalledApp> userPackages = new ArrayList<InstalledApp>();
for (ApplicationInfo packageInfo : allPackages) {
if (isSystemPackage(packageInfo)) continue;
InstalledApp app = new InstalledApp();
app.setPackageName(packageInfo.packageName);
app.setAppName(pm.getApplicationLabel(packageInfo).toString());
if (!isAndroid) {
app.setIcon(pm.getApplicationIcon(packageInfo));
}
app.setAccentColor(getAccentColor(pm.getApplicationIcon(packageInfo)));
userPackages.add(app);
}
return userPackages;
}
这就是我启动应用程序的方式
public void launchApp(String packageName) {
PackageManager pm = getPackageManager();
Intent intent = pm.getLaunchIntentForPackage(packageName);
startActivity(intent);
}
在Fire TV上，一切都很完美，但在Android TV上，许多应用程序的意图始终为空。这些才一点点。
但是使用相同的代码，这些应用程序工作正常。
谁能提供任何有关我可能做错的见解？
谢谢！
编辑：我也试过这个，我得到了例外
android.content.ActivityNotFoundException：找不到处理Intent的活动{cat = [android.intent.category.LEANBACK_LAUNCHER] flg = 0x10000000 pkg = com.netflix.ninja}
public void launchApp(String packageName) {
Intent intent = new Intent();
intent.setPackage(packageName);
intent.addCategory("android.intent.category.LEANBACK_LAUNCHER");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
编辑2：
这是适合我的代码：
public void launchApp(String packageName) {
Intent intent = new Intent();
intent.setPackage(packageName);
PackageManager pm = getPackageManager();
List<ResolveInfo> resolveInfos = pm.queryIntentActivities(intent, 0);
Collections.sort(resolveInfos, new ResolveInfo.DisplayNameComparator(pm));
if(resolveInfos.size() > 0) {
ResolveInfo launchable = resolveInfos.get(0);
ActivityInfo activity = launchable.activityInfo;
ComponentName name=new ComponentName(activity.applicationInfo.packageName,
activity.name);
Intent i=new Intent(Intent.ACTION_MAIN);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
i.setComponent(name);
startActivity(i);
}
}
要创建主屏幕风格的启动器，请不要寻找应用程序，然后尝试为每个应用程序启动Intents。在queryIntentActivities()上使用PackageManager寻找可启动的活动。
例如，此活动（来自this sample project）使用此技术实现主屏幕样式启动器：
/***
Copyright (c) 2008-2012 CommonsWare, LLC
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy
of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
by applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
OF ANY KIND, either express or implied. See the License for the specific
language governing permissions and limitations under the License.
From _The Busy Coder's Guide to Android Development_
http://commonsware.com/Android
*/
package com.commonsware.android.launchalot;
import android.app.ListActivity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import java.util.Collections;
import java.util.List;
public class Launchalot extends ListActivity {
AppAdapter adapter=null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
PackageManager pm=getPackageManager();
Intent main=new Intent(Intent.ACTION_MAIN, null);
main.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> launchables=pm.queryIntentActivities(main, 0);
Collections.sort(launchables,
new ResolveInfo.DisplayNameComparator(pm));
adapter=new AppAdapter(pm, launchables);
setListAdapter(adapter);
}
@Override
protected void onListItemClick(ListView l, View v,
int position, long id) {
ResolveInfo launchable=adapter.getItem(position);
ActivityInfo activity=launchable.activityInfo;
ComponentName name=new ComponentName(activity.applicationInfo.packageName,
activity.name);
Intent i=new Intent(Intent.ACTION_MAIN);
i.addCategory(Intent.CATEGORY_LAUNCHER);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
i.setComponent(name);
startActivity(i);
}
class AppAdapter extends ArrayAdapter<ResolveInfo> {
private PackageManager pm=null;
AppAdapter(PackageManager pm, List<ResolveInfo> apps) {
super(Launchalot.this, R.layout.row, apps);
this.pm=pm;
}
@Override
public View getView(int position, View convertView,
ViewGroup parent) {
if (convertView==null) {
convertView=newView(parent);
}
bindView(position, convertView);
return(convertView);
}
private View newView(ViewGroup parent) {
return(getLayoutInflater().inflate(R.layout.row, parent, false));
}
private void bindView(int position, View row) {
TextView label=(TextView)row.findViewById(R.id.label);
label.setText(getItem(position).loadLabel(pm));
ImageView icon=(ImageView)row.findViewById(R.id.icon);
icon.setImageDrawable(getItem(position).loadIcon(pm));
}
}
}
在Android TV设备上，您还应该搜索LEANBACK_LAUNCHER活动，因为这是Android TV使用的活动，特定于电视的APK可能没有常规的LAUNCHER活动，或者至多有一个不一定适合在电视上使用。
我在调用getLaunchIntentForPackage(packageName)时遇到了同样的错误。通过在清单文件中的启动器活动的intent-filter标记中添加它来修复它。
<category android:name="android.intent.category.LAUNCHER" />
在Android Studio中创建新的电视应用程序时，它没有上面的默认值，而是将其作为清单文件中启动器活动的intent-filter标记的默认值。
<category android:name="android.intent.category.LEANBACK_LAUNCHER" />
Intent launchIntent = null;
try{
launchIntent = context.getPackageManager().getLeanbackLaunchIntentForPackage(pkgName);
} catch (java.lang.NoSuchMethodError e){
}
if (launchIntent == null) launchIntent = context.getPackageManager().getLaunchIntentForPackage(pkgName);
if (launchIntent != null) {
launchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(launchIntent);
} else {
// failure message
}