无法确定谷歌Play商店中是否安装或没有在Android设备 [英] Cannot determine whether Google play store is installed or not on Android device

问题描述

这是检查设备上安装的软件包的一个简单的事情......以前我我的操作系统升级到2.3.5，我可以找到市场/ Play商店，使用这种code：

 私有静态最后弦乐GooglePlayStorePackageName =com.google.market;

无效的someMethod（）{
    packageManager = getApplication（）getPackageManager（）。
    名单＆LT; PackageInfo＆GT;包= packageManager.getInstalledPackages（PackageManager.GET_UNINSTALLED_PACKAGES）;
    对于（PackageInfo packageInfo：包）{
        如果（packageInfo.packageName.equals（GooglePlayStorePackageName））{
            googlePlayStoreInstalled = TRUE;
            打破;
        }
    }
}
 

由于某些原因，更新后，我根本无法找到打包的名字，表示安装了应用程序，虽然它是在设备上，我可以进入市场。

的包名称改变？或者我在看这个错误的方式？

谢谢

亚当。

更新：

这是一个愚蠢的方法来检查是否安装了包...一个更好的方法是：

 保护最终布尔isPackageInstalled（字符串的packageName）{
    尝试 {
        。application.getPackageManager（）getPackageInfo（的packageName，0）;
    }赶上（的NameNotFoundException E）{
        返回false;
    }
    返回true;
}
 

解决方案

该包的名称发生了变化，现在是com.android.vending

---

尝试：

 私有静态最后弦乐GooglePlayStorePackageNameOld =com.google.market;
私有静态最后弦乐GooglePlayStorePackageNameNew =com.android.vending;

无效的someMethod（）{
    PackageManager packageManager = getApplication（）getPackageManager（）。
    名单＆LT; PackageInfo＆GT;包= packageManager.getInstalledPackages（PackageManager.GET_UNINSTALLED_PACKAGES）;
    对于（PackageInfo packageInfo：包）{
        如果（packageInfo.packageName.equals（GooglePlayStorePackageNameOld）||
            packageInfo.packageName.equals（GooglePlayStorePackageNameNew））{
            googlePlayStoreInstalled = TRUE;
            打破;
        }
    }
}
 

This was a simple matter of checking the installed packages on the device... before I've upgraded my OS to 2.3.5, I could locate the Market/Play store, using this code:

private static final String GooglePlayStorePackageName = "com.google.market";

void someMethod() {
    packageManager = getApplication().getPackageManager();
    List<PackageInfo> packages = packageManager.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);
    for (PackageInfo packageInfo : packages) {
        if (packageInfo.packageName.equals(GooglePlayStorePackageName)) {
            googlePlayStoreInstalled = true;
            break;
        }
    }
}

For some reason after the update, I simply cannot find the to package name to indicate the application is installed, although it is on the device, and I can access the market.

Has the package name changed? or perhaps I'm looking at this the wrong way?

Thanks,

Adam.

UPDATE:

That was a stupid way to check if a package is installed... a better way is:

protected final boolean isPackageInstalled(String packageName) {
    try {
        application.getPackageManager().getPackageInfo(packageName, 0);
    } catch (NameNotFoundException e) {
        return false;
    }
    return true;
}

解决方案

The package name has changed, it is now com.android.vending

---

Try:

private static final String GooglePlayStorePackageNameOld = "com.google.market";
private static final String GooglePlayStorePackageNameNew = "com.android.vending";

void someMethod() {
    PackageManager packageManager = getApplication().getPackageManager();
    List<PackageInfo> packages = packageManager.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);
    for (PackageInfo packageInfo : packages) {
        if (packageInfo.packageName.equals(GooglePlayStorePackageNameOld) ||
            packageInfo.packageName.equals(GooglePlayStorePackageNameNew)) {
            googlePlayStoreInstalled = true;
            break;
        }
    }
}

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