Java android如果没有下载，请检查是否安装了Acrobat Reader

我想检查是否安装了Acrobat Reader，但没有安装我想在Adobe Acrobat Reader上打开android市场

我是这样检查输入的：

public static boolean canDisplayPdf(Context context) 
{
    PackageManager packageManager = context.getPackageManager();
    Intent testIntent = new Intent(Intent.ACTION_VIEW);
    testIntent.setType(MIME_TYPE_PDF);
    if (packageManager.queryIntentActivities(testIntent, PackageManager.MATCH_DEFAULT_ONLY).size() > 0) {
        return true;
    } else {
        return false;
    }
}

下一步，当此方法返回false时，我希望打开andrid市场（apk）：

但是打开一个android市场，它不起作用

改变

Uri.parse("http://play.google.com/store/apps/details?id= Adoba Acrobat Reader" + appPackageName)));

到

---

如果安装了Adobe Acrobat Reader，则可以使用此方法检查其

private boolean isPackageInstalled(String packagename, PackageManager packageManager) {
try {
    packageManager.getPackageInfo(packagename, 0);
    return true;
} catch (NameNotFoundException e) {
    return false;
}
}

用法：

boolean isAdobeInstalled = isPackageInstalled("com.adobe.reader", getPackageManager());
if (isAdobeInstalled) {
   startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://play.google.com/store/apps/details?id=com.adobe.reader")));
}

如果你发现我的答案对你有帮助，请接受。谢谢
private boolean isPackageInstalled(String packagename, PackageManager packageManager) {
try {
    packageManager.getPackageInfo(packagename, 0);
    return true;
} catch (NameNotFoundException e) {
    return false;
}
}

boolean isAdobeInstalled = isPackageInstalled("com.adobe.reader", getPackageManager());
if (isAdobeInstalled) {
   startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://play.google.com/store/apps/details?id=com.adobe.reader")));
}