14

Android 设备上通常有一个启动器。但有时用户安装了一些，而其中只有一个处于活动状态。

如何检查我的 Android 设备上当前处于活动状态的启动器？

谢谢。

4

4 回答 4

26

主屏幕以with 类别开始（来自 javadoc for ）。使用此意图来了解将启动什么应用程序。Intent ACTION_MAINCATEGORY_HOMEIntentResolveInfo

这将为您提供默认的 Home 应用程序：

final Intent intent = new Intent(Intent.ACTION_MAIN); 
intent.addCategory(Intent.CATEGORY_HOME); 
final ResolveInfo res = getPackageManager().resolveActivity(intent, 0); 
if (res.activityInfo == null) {
    // should not happen. A home is always installed, isn't it?
} else if ("android".equals(res.activityInfo.packageName)) {
    // No default selected     
} else {
     // res.activityInfo.packageName and res.activityInfo.name gives you the default app
}

现在，如果您想知道哪个在运行，则需要更多时间，因为ActivityManager很慢：

// instead of the best, query all activities that match:
final List<ResolveInfo> list = ((PackageManager)getPackageManager()).queryIntentActivities(intent, 0);
// TODO from there, use ActivityManager to know which one is running and is in the list
于 2011-07-26T15:30:33.063 回答
5 
private String findLauncherPackageName(){       
    final Intent intent = new Intent(Intent.ACTION_MAIN); 
    intent.addCategory(Intent.CATEGORY_HOME); 
    final ResolveInfo res = getPackageManager().resolveActivity(intent, 0); 
    Log.e("ANDRO_ASYNC", String.format("findLauncherPackageName()%s",res.activityInfo.packageName));
    return res.activityInfo.packageName;
}
于 2012-01-04T12:31:41.120 回答
0

仅当标记为默认时，您才能检查活动启动器的标题。否则你会得到像

com.android.internal.app.ResolverActivity
于 2013-08-22T15:50:24.890 回答
0

为了改进以前的答案，您可以使用以下自包含帮助器类：

import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;

public class LauncherFinder {

    /**
     * Checks to see if the App currently set as the system launcher
     * matches the given package name.
     *
     * @param context
     * @param packageName
     * @return
     */
    public static boolean isPackageSetAsLauncher(Context context, String packageName) {
        String launcherPackageName = getLauncherPackageName(context);
        return packageName.equals(launcherPackageName);
    }

    /**
     * Get the package name of the app currently set as the system launcher
     * @param context
     * @return
     */
    public static String getLauncherPackageName(Context context) {
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_MAIN);
        intent.addCategory(Intent.CATEGORY_HOME);

        final PackageManager packageManager = context.getPackageManager();

        ResolveInfo result = packageManager.resolveActivity(intent, 0);

        if (result != null && result.activityInfo != null) {
            return result.activityInfo.packageName;
        }

        return null;
    }
}

然后像这样使用它：

boolean isLauncher = LauncherFinder.isPackageSetAsLauncher(getApplicationContext(), "com.package.name");

This will return true if com.package.name is currently set as the default launcher.

于 2020-05-19T11:48:38.357 回答