检查应用程序安装 - 机器人 [英] Check if application is installed - Android
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问题描述
我试图从谷歌播放安装应用程序。我可以理解,在打开谷歌Play商店的网址,它会打开谷歌的发挥,当我preSS后退按钮,该活动将继续。
I'm trying to install apps from the Google play. I can understand that on opening the google play store url, it opens the google play and when i press the back button, the activity resumes.
Intent marketIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(appURL));
marketIntent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
startActivity(marketIntent);
当我回到活动,我想调用这个onResume()来检查是否安装了应用程序,但我收到一条错误:
When I went back to the activity, I tried calling this onResume() to check if the app is installed, but i receive an error:
@Override
protected void onResume() {
super.onResume();
boolean installed = false;
while (!installed) {
installed = appInstalledOrNot(APPPACKAGE);
if (installed) {
Toast.makeText(this, "App installed", Toast.LENGTH_SHORT).show();
}
}
}
private boolean appInstalledOrNot(String uri) {
PackageManager pm = getPackageManager();
boolean app_installed = false;
try {
pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
app_installed = true;
}
catch (PackageManager.NameNotFoundException e) {
app_installed = false;
}
return app_installed ;
}
的错误是如下:
The error is as follows:
E/AndroidRuntime(796): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.appinstaller/com.example.appinstaller.MainActivity}: android.content.ActivityNotFoundException:
No Activity found to handle Intent { act=android.intent.action.VIEW dat=market://details?id=com.package.name flg=0x40080000 }
我猜活动的onPause()。有没有更好的方法来实现?我试图检查,如果应用程序已完成安装。
I guess the activity is onPause(). Is there a better way to implement? I'm trying to check if the app has finished installing.
推荐答案
试试这个:
private boolean isPackageInstalled(String packagename, Context context) {
PackageManager pm = context.getPackageManager();
try {
pm.getPackageInfo(packagename, PackageManager.GET_ACTIVITIES);
return true;
} catch (NameNotFoundException e) {
return false;
}
}
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