如何获取已安装或已删除应用程序的名称？

Question

我编写了一个广播接收器来检测安装和删除应用程序。但我也想获取已安装或已删除应用程序的名称。我该怎么做？

这是我的广播接收器：

public class PackageReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        switch(intent.getAction())
        {
            case Intent.ACTION_PACKAGE_ADDED:
                String replaced = "";
                if(intent.getBooleanExtra(Intent.EXTRA_REPLACING, false))
                {
                    replaced = "replaced";
                }
                Log.e("application", "installed " + replaced);

                break;

            case Intent.ACTION_PACKAGE_REMOVED:
                if(!intent.getBooleanExtra(Intent.EXTRA_REPLACING, false))
                {
                    Log.e("application", "removed");
                }

                break;
        }

    }
}

清单中：

<receiver
    android:name=".receivers.PackageReceiver"
    android:enabled="true"
    android:exported="true">
    <intent-filter>
         <action android:name="android.intent.action.PACKAGE_ADDED" />
         <action android:name="android.intent.action.PACKAGE_REMOVED" />
         <data android:scheme="package" />
    </intent-filter>
</receiver>

Answer 1

结合在 android documentation and this answer 中发现的堆栈溢出信息，我得出以下结论。您正在使用的 Intent 可能有 EXTRA_UID extra，其中包含修改后的应用程序的 uid。使用 uid 您可以获得应用程序名称。但是你只能在 ACTION_PACKAGE_ADDED 意图上这样做，因为在 ACTION_PACKAGE_REMOVED 中应用程序已经被删除并且你无法获取它的名称（你仍然可以获得 uid）。

检查此示例：

int uid = intent.getIntegerExtra(Intent.EXTRA_UID);
String appName = context.getPackageManager().getNameForUid(uid);

所以在你的情况下会是：

public class PackageReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        switch(intent.getAction())
        {
            case Intent.ACTION_PACKAGE_ADDED:
                String replaced = "";
                String appName = "";
                int uid = -1;
                if(intent.getBooleanExtra(Intent.EXTRA_REPLACING, false))
                {
                    replaced = "replaced";
                }
                uid = intent.getIntExtra(Intent.EXTRA_UID, -1);
                if(uid != -1){
                    appName = context.getPackageManager().getNameForUid(uid);
                }
                Log.e("application", "installed " + replaced + " uid " + uid + " appname " + appName);

                break;

            case Intent.ACTION_PACKAGE_REMOVED:
                if(!intent.getBooleanExtra(Intent.EXTRA_REPLACING, false))
                {
                    Log.e("application", "removed");
                }
                break;
        }
    }
}

通过 Google 安装 Google 地球后，我在 logcat 中看到了这段代码播放：

installed uid 10404 appname com.google.earth

如何获取已安装或已删除应用程序的名称？

How to get name of installed or removed application?

android

broadcastreceiver