在这个例子中,我们只为演示对手势的检测,对于检测出的手势不做特殊处理,只在日志打印出检测到的结果。
1.activity_main.xml
- <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:paddingBottom="@dimen/activity_vertical_margin"
- android:paddingLeft="@dimen/activity_horizontal_margin"
- android:paddingRight="@dimen/activity_horizontal_margin"
- android:paddingTop="@dimen/activity_vertical_margin"
- tools:context="cn.sehzh.gesture.MainActivity" >
- <TextView
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="@string/hello_world" />
- </RelativeLayout>
2.MainActivity
- package cn.sehzh.gesture;
- import android.app.Activity;
- import android.os.Bundle;
- import android.util.Log;
- import android.view.GestureDetector;
- import android.view.GestureDetector.OnGestureListener;
- import android.view.MotionEvent;
- public class MainActivity extends Activity {
- protected static final float FLIP_DISTANCE = 50;
- GestureDetector mDetector;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- mDetector = new GestureDetector(this, new OnGestureListener() {
- @Override
- public boolean onSingleTapUp(MotionEvent e) {
- // TODO Auto-generated method stub
- return false;
- }
- @Override
- public void onShowPress(MotionEvent e) {
- // TODO Auto-generated method stub
- }
- @Override
- public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
- // TODO Auto-generated method stub
- return false;
- }
- @Override
- public void onLongPress(MotionEvent e) {
- // TODO Auto-generated method stub
- }
- /**
- *
- * e1 The first down motion event that started the fling. e2 The
- * move motion event that triggered the current onFling.
- */
- @Override
- public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
- if (e1.getX() - e2.getX() > FLIP_DISTANCE) {
- Log.i("MYTAG", "向左滑...");
- return true;
- }
- if (e2.getX() - e1.getX() > FLIP_DISTANCE) {
- Log.i("MYTAG", "向右滑...");
- return true;
- }
- if (e1.getY() - e2.getY() > FLIP_DISTANCE) {
- Log.i("MYTAG", "向上滑...");
- return true;
- }
- if (e2.getY() - e1.getY() > FLIP_DISTANCE) {
- Log.i("MYTAG", "向下滑...");
- return true;
- }
- Log.d("TAG", e2.getX() + " " + e2.getY());
- return false;
- }
- @Override
- public boolean onDown(MotionEvent e) {
- // TODO Auto-generated method stub
- return false;
- }
- });
- }
- @Override
- public boolean onTouchEvent(MotionEvent event) {
- return mDetector.onTouchEvent(event);
- }
- }
3.日志结果