java - 如何在一天中每 5 次启动时显示对话框？

Question

这是我的代码，它正在运行请告诉我我应该为每 5 次启动对话框编写什么代码，这意味着当用户在一天中第 5 次启动应用程序然后应该显示用于评价应用程序的对话框，类似地每 5 次应显示启动对话框。

 public class MainActivity extends Activity {


    String android_id,version,ver;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    //********************For Rating APP **********************
     SharedPreferences sharedPrefs = MainActivity.this.getSharedPreferences("RATER", 0);

     SharedPreferences.Editor prefsEditor = sharedPrefs.edit();

    long time = sharedPrefs.getLong("displayedTime", 0);
    if (time < System.currentTimeMillis() - 259200000) {
       displayDialog();
       prefsEditor.putLong("displayedTime", System.currentTimeMillis()).commit();
    }
 }

   //dialog box Function for rating app.

private void displayDialog() {
    // TODO Auto-generated method stub
      DialogInterface.OnClickListener dialogClickListener = new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            switch (which){
            case DialogInterface.BUTTON_POSITIVE:
                //Yes button clicked
                   Intent in = new Intent(android.content.Intent.ACTION_VIEW);
                   in.setData(Uri.parse(url));
                   startActivity(in);
                break;

            case DialogInterface.BUTTON_NEGATIVE:
                //No button clicked
                break;
            }
        }
    };

    AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
    builder.setTitle("Rate This App");
    builder.setMessage("You really seem to like this app, "
              +"since you have already used it %totalLaunchCount% times! "
              +"It would be great if you took a moment to rate it.")
    .setPositiveButton("Rate Now", dialogClickListener)
        .setNegativeButton("Latter", dialogClickListener)
        .setNeutralButton("No,thanks", dialogClickListener).show();

   }
   //End dialog box Function for rating app.
  }

这是我的代码，实际上我想在应用程序中实现应用程序评级对话框，它应该在一天中每 5 次启动时显示一次

Answer 1

使用以下方法检查启动次数。

private void checkLaunchCount()
{
    int sessionUniqueId = mSharedPref.getInt("DATE_UNIQUE", 0);
    int launchCount = mSharedPref.getInt("LAUNCH_COUNT", 0);
    if(sessionUniqueId != 0)
    {
        int todayUniqueId = getUniqueNumberFromDate();
        if(todayUniqueId == sessionUniqueId)
        {
            if(launchCount >= 5)
            {
                //Show Dialog
            }
            else
            {
                updateLaunchCount(launchCount);
            }
        }
        else
        {
            updateUniqueDateId();
            updateLaunchCount(launchCount);
        }

    }
    else
    {
        updateUniqueDateId()
        updateLaunchCount(launchCount);
    }
}

此方法用于获取 Date 的 UniqueInt

private int getUniqueNumberFromDate()
{
    Date date = new Date();
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date);
    return calendar.get(Calendar.DAY_OF_YEAR);
}

此方法用于在 SharedPref 中节省时间

private static SharedPreferences mSharedPref;
private void updateUniqueDateId()
{
    if(mSharedPref == null)
        mSharedPref = getActivity().getSharedPreferences(getActivity().getPackageName(), Activity.MODE_PRIVATE);
    SharedPreferences.Editor prefsEditor = mSharedPref.edit();
    prefsEditor.putInt("DATE_UNIQUE", getUniqueNumberFromDate()).commit();
}

此方法用于在 SharedPref 中保存计数

 private void updateLaunchCount(int launchCount)
{
    launchCount++;
    SharedPreferences.Editor prefsEditor = mSharedPref.edit();
    prefsEditor.putInt("LAUNCH_COUNT", launchCount).commit();
}