onClick() / onLongClick() / onTouch()

< /res/layout/main.xml >

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:orientation="vertical"  
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent">

    <Button
        android:id="@+id/Button01"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Basic Button"/>
        
</LinearLayout>

 

< HelloTestActivity.java >

package com.hardrock.hellotest;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;

public class HelloTestActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        final Button button = (Button) findViewById(R.id.Button01);

        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Log.d("MY_TAG", "onClick()");
            }
        });
        
        button.setOnLongClickListener(new View.OnLongClickListener() {
            public boolean onLongClick(View v) {
                Log.d("MY_TAG", "onLongClick()");
                return true;
            }
        });
        
        button.setOnTouchListener(new View.OnTouchListener() {
            public boolean onTouch(View v, MotionEvent event) {
                switch ( event.getAction() ) {
                    case MotionEvent.ACTION_DOWN:
                        Log.e("MY_TAG", "onTouch() -> ACTION_DOWN");
                        break;
                        
                    case MotionEvent.ACTION_MOVE:
                        Log.e("MY_TAG", "onTouch() -> ACTION_MOVE");
                        break;
                        
                    case MotionEvent.ACTION_UP:
                        Log.e("MY_TAG", "onTouch() -> ACTION_UP");
                        break;
                }
                return true;
            }
        });

    }
}

 

< RUN >

1. onTouch() 에서 return true 인 경우   onClick() 및 onLongClick()이 동작하지 않는다. onTouch()에서 true를 반환해 버리면, onClick() 및 onLongClick()에 이벤트가 전달되지 않는다.   2. onTouch() 에서 return false 인 경우   onClick() 및 onLongClick()이 동작한다.   <<< Short Press >>> onTouch() -> ACTION_DOWN onTouch() -> ACTION_UP onClick()   <<< Long Press >>> onTouch() -> ACTION_DOWN onLongClick() onTouch() -> ACTION_UP