public class MainActivity_EventHandleing_3_1 extends Activity { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // 获得Button对象 Button button_ok = (Button) findViewById(R.id.button1); // 设置Button控件监听器 button_ok.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { // 这里处理事件 DisplayToast("点击了OK按钮"); } }); } /* 按键按下所触发的事件 */ public boolean onKeyDown(int keyCode, KeyEvent event) { switch (keyCode) { case KeyEvent.KEYCODE_DPAD_CENTER: DisplayToast("按下:中键"); break; case KeyEvent.KEYCODE_DPAD_UP: DisplayToast("按下:上方向键"); break; case KeyEvent.KEYCODE_DPAD_DOWN: DisplayToast("按下:下方向键"); break; case KeyEvent.KEYCODE_DPAD_LEFT: DisplayToast("按下:左方向键"); break; case KeyEvent.KEYCODE_DPAD_RIGHT: DisplayToast("按下:右方向键"); break; } return super.onKeyDown(keyCode, event); } /* 按键弹起所触发的事件 */ public boolean onKeyUp(int keyCode, KeyEvent event) { switch (keyCode) { case KeyEvent.KEYCODE_DPAD_CENTER: DisplayToast("弹起:中键"); break; case KeyEvent.KEYCODE_DPAD_UP: DisplayToast("弹起:上方向键"); break; case KeyEvent.KEYCODE_DPAD_DOWN: DisplayToast("弹起:下方向键"); break; case KeyEvent.KEYCODE_DPAD_LEFT: DisplayToast("弹起:左方向键"); break; case KeyEvent.KEYCODE_DPAD_RIGHT: DisplayToast("弹起:右方向键"); break; } return super.onKeyUp(keyCode, event); } public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { return super.onKeyMultiple(keyCode, repeatCount, event); } /* 触笔事件 */ public boolean onTouchEvent(MotionEvent event) { int iAction = event.getAction(); if (iAction == MotionEvent.ACTION_CANCEL || iAction == MotionEvent.ACTION_DOWN || iAction == MotionEvent.ACTION_MOVE) { return false; } // 得到触笔点击的位置 int x = (int) event.getX(); int y = (int) event.getY(); DisplayToast("触笔点击坐标:(" + Integer.toString(x) + "," + Integer.toString(y) + ")"); return super.onTouchEvent(event); } /* 显示Toast */ public void DisplayToast(String str) { Toast.makeText(this, str, Toast.LENGTH_SHORT).show(); } }
事件处理
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转载自hulefei29.iteye.com/blog/1798484
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