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我正在尝试从未安装的应用程序中获取一些信息（名称和图标）。基本上得到了apk文件，我还没有安装它，但我想在列表中显示它的名称和图标。

我正在尝试这样做：

public void getReceivedApps() {
    packageManager = getPackageManager();
    System.out.println("TRANSFER-RECORDActivityThe received filePath is : " + receivedFilePath);

    PackageInfo packageInfo = packageManager.getPackageArchiveInfo(receivedFilePath, PackageManager.GET_GIDS);
    System.out.println("TRANSFER RECORD ACTIVYT : O TO STRING TO PACKAGE INFO : " + packageInfo.toString());
    ApplicationInfo applicationInfo = packageInfo.applicationInfo;
    Log.d(this.getClass().getName(), "packaginf0 : " + applicationInfo.toString());
    String appName = applicationInfo.loadLabel(packageManager).toString();

    System.out.println("TRANSFER RECORD ACTIVITY  : THE APPNAME IS : " + appName);
    Drawable icon = packageManager.getPackageArchiveInfo(receivedFilePath, PackageManager.GET_GIDS).applicationInfo.loadIcon(packageManager);
    //then add it to a list.
}

这个问题在 loadIcon 和 loadLabel 指令中给了我一个空指针异常。

顺便说一句，该receivedFilePath字符串具有该 apk 文件的文件路径（即

Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/"+getIntent().getStringExtra("receivedFilePath"); )

而作为字符串发送的这个 receivedFilePath 具有文件的名称（不是应用程序）

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1 回答 1

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发现了一个类似的问题，希望对你有帮助：

String APKFilePath = "mnt/sdcard/myapkfile.apk"; //For example...

PackageManager pm = getPackageManager();
PackageInfo    pi = pm.getPackageArchiveInfo(APKFilePath, 0);

// the secret are these two lines....
pi.applicationInfo.sourceDir       = APKFilePath;
pi.applicationInfo.publicSourceDir = APKFilePath;
//

Drawable APKicon = pi.applicationInfo.loadIcon(pm);
String   AppName = (String)pi.applicationInfo.loadLabel(pm);

REF：获取apk文件图标、版本、名称

于 2016-08-17T12:37:44.910 回答