WTK支持触摸屏设置

在WTK目录下的/WTK22/wtklib/devices/DefaultColorPhone/DefaultColorPhone.properties的文件中有一行touch_screen=false,把它改成true。enableAlphaChannel=true 这个是说是否支持Alpha通道。

MIDP2.0对于触摸屏方法有三个:

　　1.pointerDragged(int x, int y) 触摸屏拖拽事件(暂时还没研究)
　　2.pointerPressed(int x, int y) 触摸屏按压
　　3.pointerReleased(int x, int y) 触摸屏释放
　　pointerPressed(int x, int y)当用户按下触摸屏的时候会自动调用这个方法x,y就是当前压下的坐标
　　pointerReleased(int x, int y)和pointerPressed(int x, int y)类似相应触摸屏释放事件

import javax.microedition.lcdui.Canvas; import javax.microedition.lcdui.Graphics; public class TestPointCanvas extends Canvas { private static int rx, ry; protected void paint(Graphics g) { g.setColor(255, 255, 255); g.fillRect(0, 0, 240, 320); g.setColor(0, 0, 0); g.drawString("This is a touch test！", 60, 100, 20); g.drawString("left:" + rx, 20, 260, 20); g.drawString("right:" + ry, 180, 260, 20); } protected void pointerPressed(int x, int y) { if (x < 40 && y > 240) { doCommandL(); } if (x > 200 && y > 240) { doCommandR(); } repaint(); } protected void keyPressed(int key) { if (key == -6) { doCommandL(); } if (key == -7) { doCommandR(); } repaint(); } private void doCommandL() { rx++; } private void doCommandR() { ry++; } } import javax.microedition.lcdui.Display; import javax.microedition.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; public class MyMidlet extends MIDlet { public MyMidlet() { } protected void destroyApp(boolean flag) throws MIDletStateChangeException { } protected void pauseApp() { } protected void startApp() throws MIDletStateChangeException { Display.getDisplay(this).setCurrent(new TestPointCanvas()); } }