如何检查设备中是否已安装具有特定包名称的应用程序

Question

有没有办法检查特定应用程序是否已安装在设备中？可能是通过一些包名？

此致

Answer 1

尝试这样：

public void checkApplication(String packageName) {
    PackageManager packageManager = getPackageManager();
    ApplicationInfo applicationInfo = null;
    try {
        applicationInfo = packageManager.getApplicationInfo(packageName, 0);
    } catch (NameNotFoundException e) {
        e.printStackTrace();
    }
    if (applicationInfo == null) {
        // not installed
    } else {
        // Installed
    }
}

Answer 2

检查一下：

在packagename的检查应用中添加targetPackage。

public boolean isPackageExisted(String targetPackage){
        List<ApplicationInfo> packages;
        PackageManager pm;
            pm = getPackageManager();        
            packages = pm.getInstalledApplications(0);
            for (ApplicationInfo packageInfo : packages) {
        if(packageInfo.packageName.equals(targetPackage)) return true;
        }        
        return false;
    }