Question

当我的用户第一次登陆主要活动时，我希望图块（图像视图）显示为灰色且不可点击。只有第一个图块应为彩色且可点击。用户访问第一个图块并返回到主要活动后，下一个图块将变为彩色并可单击，依此类推。

这个想法是在第一次使用该应用程序时引导用户进行操作的顺序。我想此信息将需要存储在共享首选项中，因为我只希望第一次发生这种情况。随后，所有图块均应为彩色且可点击。

有人可以帮助我实现这一目标吗？目前，我有一个switch语句，图像图块的布尔值和彩色/灰色版本。

 @Override
public void onClick(View v) {

    SharedPreferences.Editor introEditor = introPref.edit();

    switch (v.getId()) {

        case R.id.cbt_button_grey:
            Intent mainIntent = new Intent(getActivity(), IntroActivity2.class);
            startActivity(mainIntent);
            hasSelected = true;
            introEditor.putBoolean("hasSelected", hasSelected);
            introEditor.commit();
            break;
        case R.id.twisted_thinking_button_grey:
            hasSelected = true;
            Intent distortedIntent = new Intent(getActivity(), TwelveTypesDistortedThinkingSliderActivity.class);
            startActivity(distortedIntent);
            break;
        case R.id.workout_button_grey:
            hasSelected = true;
            Fragment workoutFragment = new WorkoutFragment();
            FragmentTransaction workoutTransaction = getActivity().getSupportFragmentManager().beginTransaction();
            workoutTransaction.replace(R.id.fragment_container, workoutFragment);
            workoutTransaction.commit();
            break;
        case R.id.workout_log_button_grey:
            hasSelected = true;
            Fragment workoutLogFragment = new WorkoutLogFragment();
            FragmentTransaction workoutLogTransaction = getActivity().getSupportFragmentManager().beginTransaction();
            workoutLogTransaction.replace(R.id.fragment_container, workoutLogFragment);
            workoutLogTransaction.commit();
            break;
        case R.id.mood_log_button:
            hasSelected = true;
            Fragment moodLogFragment = new MoodLogFragment();
            FragmentTransaction moodLogTransaction = getActivity().getSupportFragmentManager().beginTransaction();
            moodLogTransaction.replace(R.id.fragment_container, moodLogFragment);
            moodLogTransaction.commit();
            break;
        case R.id.activities_button_grey:
            hasSelected = true;
            Fragment activitiesFragment = new ActivitiesFragment();
            FragmentTransaction activitiesTransaction = getActivity().getSupportFragmentManager().beginTransaction();
            activitiesTransaction.replace(R.id.fragment_container, activitiesFragment);
            activitiesTransaction.commit();
            break;
    }
}

Answer 1

如何在MainActivity类中使用startActivityForResult（）。您可以覆盖onActivityResult（）以启用/禁用图像。这只是一个建议。

图像呈灰色直到单击为止-更改为彩色并记住单击的图像

1 个答案: