32

我正在构建一项服务,将已安装应用程序列表从 Android TV 或 Fire TV 发送到手机。然后手机发回它想要启动的应用程序的包名称,服务将启动它。

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 上一切正常,但在 Android TV 上,许多应用程序的意图始终为空。这些才一点点。

  • com.haystack.android
  • com.netflix.ninja
  • tv.pluto.android
  • com.bamnetworks.mlbtv

但是,使用相同的代码,这些应用程序工作得很好。

  • com.hulu.livingroomplus
  • com.sling
  • com.frogmind.badland
  • com.songza.tv

谁能提供任何关于我可能做错了什么的见解?

谢谢!

编辑: 我也试过这个,我得到了例外

android.content.ActivityNotFoundException:没有找到处理 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:

这是对我有用的代码:

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);
    }
}
4

5 回答 5

30

queries由于 Android 11 存在行为更改,除非您将标签添加到 AndroidManifest,否则某些应用不会提供此信息,例如

    <queries>
        <package android:name="app.i.want.to.query" />
    </queries>

请参阅此处了解更多信息

于 2020-12-04T08:58:17.550 回答
22

要创建一个主屏幕风格的启动器,不要寻找应用程序然后尝试Intents为每个应用程序启动。queryIntentActivities()使用on寻找可启动的活动PackageManager

例如,这个活动(来自这个示例项目)使用这种技术实现了一个主屏幕风格的启动器:

/***
  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Activity LEANBACK_LAUNCHER,因为这是 Android TV 使用的,而 TV 特定的 APK 可能没有常规LAUNCHERActivity,或者充其量有一个不一定适合在电视上使用的 APK。

于 2015-05-25T22:06:21.400 回答
8

在 Android 11 中,您只能使用有限数量的包名称, getInstalledApplications()并且只能通过使用 getLaunchIntentForPackage().

将此权限添加到您的 Android 清单文件以获取所有应用程序包名称和意图:

<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"/>

如果您只想针对有限数量的应用程序使用 Intent,则应该在您的 Android 清单文件中使用查询:

<queries>
    <package android:name="packageName" />
</queries>
于 2021-07-02T11:55:37.070 回答
0

我在调用时遇到了同样的错误getLaunchIntentForPackage(packageName)。通过在清单文件中的启动器活动的意图过滤器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 TV 应用程序时,它没有将上述作为默认值,而是在清单文件中启动器活动的 intent-filter 标记中将其作为默认值。

<category android:name="android.intent.category.LEANBACK_LAUNCHER" />
于 2019-04-10T14:36:15.203 回答
-3
    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
                }
于 2015-05-26T17:34:30.880 回答