Android Multi-Touch Demo

안드로이드 멀티터치 테스트

MultiTouchTest.java

package com.example.androidapp;

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

public class MultiTouchTest extends Activity {
	
	TextView tv;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
	}

	@Override
	public boolean onTouchEvent(MotionEvent event) {
		int action = event.getAction();
		int x,y;
		String str = "";
		//Multi Touch Down을 감지하기 위해서는 아래와 같이 Mask를 사용해야 함
		switch(action & MotionEvent.ACTION_MASK){
		case MotionEvent.ACTION_DOWN:
			str = "ACTION_DOWN";
			x = (int)event.getX();
			y = (int)event.getY();
			Log.i(str, x+", "+y);
			break;
		case MotionEvent.ACTION_UP:
			str = "ACTION_UP";
			x = (int)event.getX();
			y = (int)event.getY();
			Log.i(str, x+", "+y);
			break;
		case MotionEvent.ACTION_POINTER_DOWN:
			str = "ACTION_POINTER_DOWN";
			for(int i=0;i<event.getPointerCount();++i){
				int pointer_idx = event.findPointerIndex(i);
				if( pointer_idx == -1 ) continue;
				x   = (int)event.getX(pointer_idx);
				y   = (int)event.getY(pointer_idx);
				Log.i("ACTION_POINTER_DOWN", pointer_idx+" x("+x+"), y("+y+")");
			}
			break;
		case MotionEvent.ACTION_POINTER_UP:
			str = "ACTION_POINTER_UP";
			for(int i=0;i<event.getPointerCount();++i){
				int pointer_idx = event.findPointerIndex(i);
				if( pointer_idx == -1 ) continue;
				x   = (int)event.getX(pointer_idx);
				y   = (int)event.getY(pointer_idx);
				Log.i("ACTION_POINTER_UP", pointer_idx+" x("+x+"), y("+y+")");
			}
			break;
		case MotionEvent.ACTION_MOVE:
			str = "ACTION_MOVE";
			for(int i=0;i<event.getPointerCount();++i){
				int pointer_idx = event.findPointerIndex(i);
				if( pointer_idx == -1 ) continue;
				x   = (int)event.getX(pointer_idx);
				y   = (int)event.getY(pointer_idx);
				Log.i("ACTION_MOVE", pointer_idx+" x("+x+"), y("+y+")");
			}
			break;
		}
		return true;
	}
}