1.自定义一个listview
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ListView;
public class FilpperListvew extends ListView{
private float orginX,orginY,apartX,apartY,curX,curY;
private boolean delete = false;
private int itemHeight =50;
private int ratio = 1;
private FilpperDeleteListener filpperDeleterListener;
public FilpperListvew(Context context) {
super(context);
}
public FilpperListvew(Context context, AttributeSet attrs){
super(context, attrs);
}
//触发移动事件
@Override
public boolean onTouchEvent(MotionEvent ev) {
switch (ev.getAction()){
//记录按下的瞬间的坐标主要是初始化坐标数据，方便以后计算移动的距离
case MotionEvent.ACTION_DOWN:
int temp = getChildCount();
itemHeight = (temp==0)?itemHeight:getChildAt(0).getHeight();
orginX = ev.getX(0);
orginY = ev.getY(0);
curX = orginX;
curY = orginY;
if (filpperDeleterListener != null) {
filpperDeleterListener.getMoveY(curX, curY);
}
break;
//移动监听动态位置坐标的移动处理
case MotionEvent.ACTION_MOVE:
float deltaX = ev.getX(ev.getPointerCount() - 1) - orginX;
//float deltaY = Math.abs(ev.getY(ev.getPointerCount() - 1) - orginY);
apartX = ev.getX()-curX;
apartY = ev.getY()-curY;
curX = ev.getX();
curY = ev.getY();
//手指触摸的上下距离不能太大(即水平移动)
if(apartX apartY && filpperDeleterListener != null){
filpperDeleterListener.onFlipping(orginX,orginY,apartX,apartY);
}
if (Math.abs(deltaX) > this.getWidth() / ratio) {
delete = true;
} else {
delete = false;
}
}
break;
//主要是移动距离之后判断移动的位置是回原来的位置，还是移动到值得的位置(这些的操作都是的listview中实现具体的位置移动)
case MotionEvent.ACTION_UP:
if (delete && filpperDeleterListener != null) {
filpperDeleterListener.restoreView(curX, curY,true);
}
//判断是否符合移动的条件
if(!delete){
if(filpperDeleterListener != null){
filpperDeleterListener.restoreView(orginX,orginY,false);
}
}
reset();
break;
}
return super.onTouchEvent(ev);
}
public void reset(){
delete = false ;
orginX = -1 ;
orginY = -1 ;
}
public void setFilpperDeleteListener(FilpperDeleteListener f, int r) {
filpperDeleterListener = f;
ratio = r;
}
public interface FilpperDeleteListener {
//方法说明控制上下移动的位置
public void getMoveY(float moveX, float moveY);
//移动位置的具体的接口
public void onFlipping(float xPosition,float yPosition,float apartX,float apartY);
//最后的接口用来item最后的位置是否改变
public void restoreView(float x,float y, boolean tag);
}
public int getItemHeight() {
return itemHeight;
}
}
2.在activity的主布局中声明listview
3.在activity中声明listview
flipperListView = (FilpperListvew)findViewById(R.id.filpperlistview);
4.适配器的调用
myAdapter = new myAdapter(myActivity.this, myList);
if (flipperListView != null) {
flipperListView.setAdapter(myAdapter);
myAdapter.notifyDataSetChanged();
flipperListView.setFilpperDeleteListener(new FilpperDeleteListener() {
int moveX;
int moveY;
@Override
public void getMoveY(float moveXx, float moveYy) {
moveY = (int)moveYy;
moveX = (int)moveXx;
}
@Override
public void onFlipping(float xPosition, float yPosition,float apartX, float apartY) {
int index = flipperListView.pointToPosition((int)xPosition, moveY);
if(index >= 0){
int firstVisible = flipperListView.getFirstVisiblePosition();
View v = flipperListView.getChildAt(index-firstVisible);
RelativeLayout my_adapter_linear1 = (RelativeLayout) v.findViewById(R.id.my_adapter_linear1);
//临时移动几像素apartX(起始位置到终点位置)
int temp = (int)apartX;
if(my_adapter_linear1 != null){
//moveX = moveX + temp;
System.out.println("moveX======="+moveX);
System.out.println("temp: " + temp);
//手机屏幕的像素转换dip2px，超过65像素禁止向左移动
if(Math.abs(temp) = 0){
int firstVisible = flipperListView.getFirstVisiblePosition();
View v = flipperListView.getChildAt(index-firstVisible);
for (int i = 0; i
这是所有的代码片段，由于设计到版权的问题代码不是很全面不懂的我们可以共同探讨。
