android - ボタンの色を変更し、クリックしたときに画面を数秒間一時停止するにはどうすればよいですか?

Question

私はアンドロイドクイズに取り組んでいます。ボタンを追加したかったのです。クリックすると、画像または色が変更され、ボタンをしばらく押したままにして答えを確認します。答えが正しい場合は、緑色と間違った赤色が表示されます。

最後にこのようなボタンの色の変更を実装しましたが、遅延するハンドラーを実装する方法がわかりません:-

public class QuestionActivity extends Activity implements OnClickListener{

    private Question currentQ;
    private GamePlay currentGame;




    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.question);
        processSession();

    }
    private void processSession(){
                /**
         * Configure current game and get question
         */
        currentGame = ((CYKApplication)getApplication()).getCurrentGame();
        currentQ = currentGame.getNextQuestion();
        Button nextBtn1 = (Button) findViewById(R.id.answer1);
        nextBtn1.setOnClickListener(this);
        Button nextBtn2 = (Button) findViewById(R.id.answer2);
        nextBtn2.setOnClickListener(this);
        Button nextBtn3 = (Button) findViewById(R.id.answer3);
        nextBtn3.setOnClickListener(this);
        Button nextBtn4 = (Button) findViewById(R.id.answer4);
        nextBtn4.setOnClickListener(this);
        Button nextBtn5 = (Button) findViewById(R.id.answer5);
        nextBtn5.setOnClickListener(this);
        /**
         * Update the question and answer options..
         */
        setQuestions();

    }


    /**
     * Method to set the text for the question and answers from the current games
     * current question
     */
    private void setQuestions() {
        //set the question text from current question
        String question = Utility.capitalise(currentQ.getQuestion());
        TextView qText = (TextView) findViewById(R.id.question);
        qText.setText(question);

        //set the available options
        List<String> answers = currentQ.getQuestionOptions();
        TextView option1 = (TextView) findViewById(R.id.answer1);
        option1.setText(Utility.capitalise(answers.get(0)));

        TextView option2 = (TextView) findViewById(R.id.answer2);
        option2.setText(Utility.capitalise(answers.get(1)));

        TextView option3 = (TextView) findViewById(R.id.answer3);
        option3.setText(Utility.capitalise(answers.get(2)));

        TextView option4 = (TextView) findViewById(R.id.answer4);
        option4.setText(Utility.capitalise(answers.get(3)));


        int score = currentGame.getScore();
        String scr = String.valueOf(score);
        TextView score1 = (TextView) findViewById(R.id.score);
        score1.setText(scr);
      try{ 
         new CountDownTimer(20000, 1000) {

            public void onTick(long millisUntilFinished) {
                TextView timers = (TextView) findViewById(R.id.timers);
                timers.setText("" + millisUntilFinished / 1000);
            }

            public void onFinish() { 
                currentGame.decrementScore();
                processSession();
                   }
         }.start();
      }
      catch(Exception ex)
      {
          throw new RuntimeException(ex);
      }
        }


    @Override
    public void onClick(View arg0) {
        //Log.d("Questions", "Moving to next question");
        if(arg0.getId()==R.id.answer5)
        {
        new AlertDialog.Builder(this).setMessage("Are you sure?").setCancelable(true).setPositiveButton("Yes",new DialogInterface.OnClickListener() {


        public void onClick(DialogInterface dialog,int id) {
                finish();
                 }
             }).setNegativeButton("No", null).show();

                }

        else
        {

            if(!checkAnswer(arg0)) return;  

        /**
         * check if end of game
         */
        if (currentGame.isGameOver()){
            //Log.d("Questions", "End of game! lets add up the scores..");
            //Log.d("Questions", "Questions Correct: " + currentGame.getRight());
            //Log.d("Questions", "Questions Wrong: " + currentGame.getWrong());
            Intent i = new Intent(this, EndgameActivity.class);
            startActivity(i);
            finish();
        }
        else{
            Intent i = new Intent(this, QuestionActivity.class);
            startActivity(i);
            finish();
          }
        }
      }



    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event)
    {
        switch (keyCode)
        {
        case KeyEvent.KEYCODE_BACK :
            return true;
        }

        return super.onKeyDown(keyCode, event);
    }


    /**
     * Check if a checkbox has been selected, and if it
     * has then check if its correct and update gamescore
     */
    private boolean checkAnswer(View v) {
     try {
     final Button b=(Button) v;
     final String answer = b.getText().toString();
     counterTimer.cancel();
     b.setBackgroundResource(R.drawable.ans);
     b.setEnabled(false);

     //Log.d("Questions", "Valid Checkbox selection made - check if correct");


         handler.postDelayed(new Runnable() {

            @Override
            public void run() {
                 if( (currentQ.getAnswer().equalsIgnoreCase(answer)))
                {
                    b.setBackgroundResource(R.drawable.ansgreen);
                    //Log.d("Questions", "Correct Answer!");
                    currentGame.incrementScore();
                }
                else{
                    b.setBackgroundResource(R.drawable.ansred);
                    //Log.d("Questions", "Incorrect Answer!");
                    currentGame.decrementScore1();
                }
           }
         }, 10000000);

       } catch (Exception e) {
           e.printStackTrace();
       }
     return true;
}

どの回答も評価に値します。

前もって感謝します

Answer 1

次のようなことができます。

final ImageButton imageButton = (ImageButton) findViewById(R.id.imageButton);
int delaySeconds = 1;

    imageButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View arg0) {

            new Handler().postDelayed(new Runnable() {

                @Override
                public void run() {
                    // return true on correct & false on incorrect 
                    if (answerTrue())
                        // change the background to green.
                        imageButton.setBackgroundResource(R.drawable.green);
                    else
                        // change the background to red.
                        imageButton.setBackgroundResource(R.drawable.red);
                }
            }, delaySeconds * 1000);
        }
    });

Answer 2

ボタンの色を変更するために、ボタンにこのコードを実装しました。うまくいくことを願っています。

  private boolean checkAnswer(View v) {

            Button b=(Button) v;
            String answer = b.getText().toString();

            b.setBackgroundResource(R.drawable.ans);

                 b.setEnabled(false);

                if (currentQ.getAnswer().equalsIgnoreCase(answer))
                {
                    b.setBackgroundResource(R.drawable.ansgreen);
                }
                else{
                    b.setBackgroundResource(R.drawable.ansred);
                }
                return true;
            }

ハンドラ

if (currentGame.isGameOver()){
            //Log.d("Questions", "End of game! lets add up the scores..");
            //Log.d("Questions", "Questions Correct: " + currentGame.getRight());
            //Log.d("Questions", "Questions Wrong: " + currentGame.getWrong());
            final Handler handle = new Handler();
            Runnable delay = new Runnable() {
                public void run() {

                    finish();
                    startActivity(new Intent(QuestionActivity.this, EndgameActivity.class));
                }
            };
            handle.postDelayed(delay,1000);
        }
        else
        {
            final Handler handle = new Handler();
            Runnable delay = new Runnable() {
                public void run() {

                    finish();
                    startActivity(new Intent(QuestionActivity.this, QuestionActivity.class));
                }
            };
            handle.postDelayed(delay,1000);
                  }
              }

Answer 3

Handlerに投稿して目標を達成できますUIThread

Imagebutton ib= (ImageButton)findViewById(R.id.YourImageButtonId); //Imagebutton default may be something different.
ib.setOnClickListener(new View.onClickListener(){
Handler h = new Handler();
 h.postDelayed(new Runnable() {

    @Override
    public void run() {
     //Put your conditions accordingly
     ib.setBackgroundResource(R.drawable.Green);     
    }
 }, delaytime); // e.g. 3000 milliseconds
});

Answer 4

を使用して、特定のアクションHandlerを遅らせることができます。

Handler h = new Handler();

 h.postDelayed(new Runnable() {

     @Override
     public void run() {
         // DO DELAYED STUFF
     }
 }, delaytime); // e.g. 3000 milliseconds

run()メソッド内で実行するアクションは、設定した遅延時間の後に実行されます。