检查是否安装了应用程序 - Android
我正在尝试从Google Play安装应用。我可以理解,在打开Google Play商店网址时,它会打开Google Play,当我按下后退按钮时,活动会恢复。
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);
当我回到活动时,我试着调用它onResume()
来检查应用程序是否已安装,但是我收到错误:
@Overrideprotected 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 ;}
错误如下:
E / AndroidRuntime(796):java.lang.RuntimeException:无法启动活动ComponentInfo {com.example.appinstaller / com.example.appinstaller.MainActivity}:android.content.ActivityNotFoundException:找不到处理Intent的活动{act = android .intent.action.VIEW dat = market:// details?id = com.package.name flg = 0x40080000}
我想活动是onPause()
。有没有更好的方法来实现它?我正在尝试检查应用是否已完成安装。
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