以編程方式安裝Android應用程序時如何在主屏幕上添加圖標？

Question

實際上，我想創建一個用於醫療目的的應用程序，並且我想在主屏幕上顯示一個用於緊急呼叫的圖標。 它應該在安裝應用程序時出現。 歡迎留言回復。

Answer 1

主活動.java

public class MainActivity extends Activity {

//Shortcut Icon
    Context mContext=SplashScreen.this;
    SharedPreferences appPreferences;
    boolean isAppInstalled = false;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //Added for full ascreen


         appPreferences = PreferenceManager.getDefaultSharedPreferences(this);
          isAppInstalled = appPreferences.getBoolean("isAppInstalled",false);
          if(isAppInstalled==false)
          {
              *//**
               * create short cut code
               *//*
              Intent shortcutIntent = new Intent(getApplicationContext(),MainActivity.class);
              shortcutIntent.setAction(Intent.ACTION_MAIN);
              Intent intent = new Intent();
              intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
              Resources res = getResources();
              String App_name = String.format(res.getString(R.string.app_name)); //your app name
              intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, App_name);
              intent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,Intent.ShortcutIconResource.fromContext(getApplicationContext(), R.drawable.app_img)); //your app image
              intent.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
              getApplicationContext().sendBroadcast(intent);
              *//**
               * Make preference true
               *//*
              SharedPreferences.Editor editor = appPreferences.edit();
              editor.putBoolean("isAppInstalled", true);
              editor.commit();
              Toast.makeText(getApplicationContext(), "Shortcut Created", Toast.LENGTH_SHORT).show();
          }


}