Question

我的代码应该检查是否安装了特定的应用程序：

是 - 启动它

否 - 启动Play商店并搜索应用

  public void checkXposedInstaller() {
    String packageName = "de.robv.android.xposed.installer";
    //check if app is installed
    try {
        PackageManager manager = getPackageManager();
        Intent i = manager.getLaunchIntentForPackage(packageName);
        if (i == null)
            throw new PackageManager.NameNotFoundException();
        i.addCategory(Intent.CATEGORY_LAUNCHER);
        checkXposedFramework();
    } catch (PackageManager.NameNotFoundException e) {
        Toast.makeText(this, "app not found", Toast.LENGTH_LONG).show(); //*** download and root install apk
        // search on browser/market
        try {
            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=" + packageName));
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(intent);
        } catch (android.content.ActivityNotFoundException e1) {
            Toast.makeText(this, "no app found to handle request", Toast.LENGTH_LONG).show();
        }
    }
}

但它没有做到这一点。然而，奇怪的是，当我将包名称与com.google.app之类的东西交换时，它就像一个魅力！我在这做错了什么？

PS： try块什么都不做，没有崩溃，没有抓到日志

Answer 1

试试这个：

public static void launchPackageOrGotoStore(Context context, String packageName) {
    try {
        Intent intent = context.getPackageManager().getLaunchIntentForPackage(packageName);
        context.startActivity(intent);

    } catch (ActivityNotFoundException | NullPointerException ex) {
        try {
            context.startActivity(new Intent(Intent.ACTION_VIEW,
                    Uri.parse("market://details?id=" + packageName))
            );
        } catch (ActivityNotFoundException e) {
            context.startActivity(new Intent(Intent.ACTION_VIEW,
                    Uri.parse("http://play.google.com/store/apps/details?id=" + packageName)));
        }
    }
}

用法：

launchPackageOrGotoStore(context, "com.facebook.katana");

尝试启动程序包名称的Intent并捕获ActivityNotFoundException。然后首先启动Play商店应用，如果应用和Play商店应用都不存在，最后一次尝试是启动游戏商店网站。

Answer 2

检查以下代码，您可以检查该应用是否安装，如果没有，那么您可以重定向到Playstore：

    boolean isAppInstalled = appInstalledOrNot("de.robv.android.xposed.installer");
                        if (isAppInstalled) {
                            //This intent will help you to launch if the package is already installed
                            Intent LaunchIntent = getPackageManager()
                                    .getLaunchIntentForPackage("de.robv.android.xposed.installer");
                            startActivity(LaunchIntent);

                        } else {
                            // Do whatever we want to do if application not installed
                            // For example, Redirect to play store

                            final String appPackageName = "de.robv.android.xposed.installer"; // getPackageName() from Context or Activity object
                            try {
                                startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=" + appPackageName)));
                            } catch (android.content.ActivityNotFoundException anfe) {
                                startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://play.google.com/store/apps/details?id=" + appPackageName)));
                            }

                        }

功能检查应用程序是否安装：

private boolean appInstalledOrNot(String uri) {
    PackageManager pm = getPackageManager();
    try {
        pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
        return true;
    } catch (PackageManager.NameNotFoundException e) {
    }

    return false;
}

如何以编程方式启动应用程序？

2 个答案: