ListView侧滑效果

项目做完了闲着没事研究一下自定listview的侧滑效果，现在共享给大家希望对大家有帮助

如果发现bug希望大家尽管回复我会修改的

package com.example.gzl.mapplication.wedig;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ListView;

/**
* Created by gzl on 2016/3/3
*/
public class MyListView extends ListView {

private float minDis = 10;
private float mLastMotionX;// 记住上次X触摸屏的位置
private float mLastMotionY;// 记住上次Y触摸屏的位置
private boolean isLock = false;

public MyListView(Context context, AttributeSet attrs) {
super(context, attrs);
}

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (!isIntercept(ev)) {
return false;
}
return super.onInterceptTouchEvent(ev);
}

@Override
public boolean dispatchTouchEvent(MotionEvent event) {
boolean dte = super.dispatchTouchEvent(event);
if (MotionEvent.ACTION_UP == event.getAction() && !dte) {//onItemClick
int position = pointToPosition((int) event.getX(), (int) event.getY());//被点击的条目在当前页面的位置
int fetch;//listView被点击的item的position
if (getLastVisiblePosition() >= getChildCount()) {//判断是不是listView的第一页
//不是第一页
fetch = getChildCount() - 1 - (getLastVisiblePosition() - position);
fetch = fetch + getFirstVisiblePosition();
Log.e("false","true");
} else {
//是第一页
fetch = position;
}
Log.e( "position","getLastVisiblePosition():" + getLastVisiblePosition() + "getChildCount():" + getChildCount() + position + "=========fetch:" + fetch);
super.performItemClick(getAdapter().getView(fetch, null, null), fetch, getItemIdAtPosition(fetch));
}
return dte;
}

@Override
public boolean performClick() {
return super.performClick();
}

@Override
public boolean performItemClick(View view, int position, long id) {
return super.performItemClick(view, position, id);
}

/**
* 检测是ListView滑动还是item滑动
* true listview滑动  false item滑动
*/
private boolean isIntercept(MotionEvent ev) {
float x = ev.getX();
float y = ev.getY();
int action = ev.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
mLastMotionX = x;
mLastMotionY = y;
break;
case MotionEvent.ACTION_MOVE:
if (!isLock) {
float deltaX = Math.abs(mLastMotionX - x);
float deltay = Math.abs(mLastMotionY - y);
mLastMotionX = x;
mLastMotionY = y;
if (deltaX > deltay && deltaX > minDis) {
isLock = true;
return false;
}
} else {
return false;
}
break;
case MotionEvent.ACTION_UP:
isLock = false;
break;
case MotionEvent.ACTION_CANCEL:
isLock = false;
break;
}
return true;
}

}

package com.example.gzl.mapplication.wedig;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.Scroller;

/**
* Created by gzl on 2016/3/3.
*
*/
public class MyListViewItem extends LinearLayout {

private Scroller mScroller;// 滑动控制
private float mLastMotionX;// 记住上次触摸屏的位置
private int deltaX;
private int back_width;
private float downX;
public boolean isdelet = false;

public MyListViewItem(Context context) {
super(context);
init(context);
}

public MyListViewItem(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}

public void setIsdelet(boolean isdelet) {
this.isdelet = isdelet;
if(isdelet){
scrollTo(back_width, 0);
}else{
scrollTo(0, 0);
}
}

private void init(Context context) {
mScroller = new Scroller(context);
}

/**
* computeScroll在父控件执行drawChild时，会调用这个方法
*/
@Override
public void computeScroll() {
if (mScroller.computeScrollOffset()) {
scrollTo(mScroller.getCurrX(), mScroller.getCurrY());
postInvalidate();//刷新界面
}
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int count = getChildCount();
for (int i = 0; i < count; i++) {
measureChild(getChildAt(i), widthMeasureSpec, heightMeasureSpec);
if (i == 1) {
back_width = getChildAt(i).getMeasuredWidth();
}
}

}

@Override
public boolean onTouchEvent(MotionEvent event) {
int action = event.getAction();
float x = event.getX();
switch (action) {
case MotionEvent.ACTION_DOWN:
mLastMotionX = x;
downX = x;
break;
case MotionEvent.ACTION_MOVE:
deltaX = (int) (mLastMotionX - x);
mLastMotionX = x;
int scrollx = getScrollX() + deltaX;
if (scrollx > 0 && scrollx < back_width) {
scrollBy(deltaX, 0);
} else if (scrollx > back_width) {
scrollTo(back_width, 0);
} else if (scrollx < 0) {
scrollTo(0, 0);
}
break;
case MotionEvent.ACTION_UP:
int scroll = getScrollX();
if (scroll > back_width / 2) {
scrollTo(back_width, 0);
isdelet = true;
} else {
scrollTo(0, 0);
isdelet = false;
}
if (Math.abs(x - downX) < 5) {
return false;
}
break;
case MotionEvent.ACTION_CANCEL:
scrollTo(0, 0);
break;
}
return true;
}

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int margeLeft = 0;
int size = getChildCount();
for (int i = 0; i < size; i++) {
View view = getChildAt(i);
if (view.getVisibility() != View.GONE) {
int childWidth = view.getMeasuredWidth();
view.layout(margeLeft, 0, margeLeft + childWidth,
view.getMeasuredHeight());
margeLeft += childWidth;
}
}
}
}

package com.example.gzl.mapplication;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Toast;

import com.example.gzl.mapplication.adapter.MyAdapter;
import com.example.gzl.mapplication.wedig.MyListView;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends Activity implements AdapterView.OnItemClickListener {

private MyListView my_listview;
public MyAdapter myAdapter;
private List<Object> myList = new ArrayList<>();

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
my_listview = (MyListView) findViewById(R.id.my_listview);
setData();
myAdapter = new MyAdapter(MainActivity.this);
myAdapter.setmDatas(myList);
my_listview.setAdapter(myAdapter);
my_listview.setOnItemClickListener(this);
}

private void setData() {
for (int i = 0; i < 20; i++) {
myList.add("我是item" + i);
}
}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(parent.getContext(), "点击了" + position, Toast.LENGTH_SHORT).show();
}
}

package com.example.gzl.mapplication.adapter;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.example.gzl.mapplication.R;
import com.example.gzl.mapplication.wedig.MyListViewItem;

import java.util.ArrayList;
import java.util.List;

/**
* Created by zhaohua on 2016/3/3.
*/
public class MyAdapter extends BaseAdapter {
private Context mContext;
private List<Object> mDatas;

public MyAdapter(Context context) {
this.mContext = context;
mDatas = new ArrayList<>();
}

public void setmDatas(List<Object> mDatas) {
this.mDatas = mDatas;
}

@Override
public int getCount() {
if (mDatas.size() > 0) {
return mDatas.size();
} else {
return 0;
}
}

@Override
public Object getItem(int position) {
return mDatas.get(position);
}

@Override
public long getItemId(int position) {
return 0;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

ViewHoder myViewHoder;
if (convertView == null) {
myViewHoder = new ViewHoder();
convertView = View.inflate(mContext, R.layout.listview_item, null);
myViewHoder.myitemtext = (TextView) convertView.findViewById(R.id.myitemtext);
myViewHoder.mybtnBj = (Button) convertView.findViewById(R.id.mybtnBj);
myViewHoder.mybtnDelete = (Button) convertView.findViewById(R.id.mybtnDelete);
convertView.setTag(myViewHoder);
} else {
myViewHoder = (ViewHoder) convertView.getTag();
}
myViewHoder.myitemtext.setText(mDatas.get(position).toString());
((MyListViewItem)convertView).setIsdelet(false);
myViewHoder.mybtnBj.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext, "点击了标记", Toast.LENGTH_SHORT).show();
}
});
myViewHoder.mybtnDelete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext, "点击了删除", Toast.LENGTH_SHORT).show();
}
});

return convertView;

}

class ViewHoder {
TextView myitemtext;
Button mybtnBj;
Button mybtnDelete;
}
}

package com.example.gzl.mapplication.wedig;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.Scroller;

/**
* Created by gzl on 2016/3/3.
*
*/
public class MyListViewItem extends LinearLayout {

private Scroller mScroller;// 滑动控制
private float mLastMotionX;// 记住上次触摸屏的位置
private int deltaX;
private int back_width;
private float downX;
public boolean isdelet = false;

public MyListViewItem(Context context) {
super(context);
init(context);
}

public MyListViewItem(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}

public void setIsdelet(boolean isdelet) {
this.isdelet = isdelet;
if(isdelet){
scrollTo(back_width, 0);
}else{
scrollTo(0, 0);
}
}

private void init(Context context) {
mScroller = new Scroller(context);
}

/**
* computeScroll在父控件执行drawChild时，会调用这个方法
*/
@Override
public void computeScroll() {
if (mScroller.computeScrollOffset()) {
scrollTo(mScroller.getCurrX(), mScroller.getCurrY());
postInvalidate();//刷新界面
}
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int count = getChildCount();
for (int i = 0; i < count; i++) {
measureChild(getChildAt(i), widthMeasureSpec, heightMeasureSpec);
if (i == 1) {
back_width = getChildAt(i).getMeasuredWidth();
}
}

}

@Override
public boolean onTouchEvent(MotionEvent event) {
int action = event.getAction();
float x = event.getX();
switch (action) {
case MotionEvent.ACTION_DOWN:
mLastMotionX = x;
downX = x;
break;
case MotionEvent.ACTION_MOVE:
deltaX = (int) (mLastMotionX - x);
mLastMotionX = x;
int scrollx = getScrollX() + deltaX;
if (scrollx > 0 && scrollx < back_width) {
scrollBy(deltaX, 0);
} else if (scrollx > back_width) {
scrollTo(back_width, 0);
} else if (scrollx < 0) {
scrollTo(0, 0);
}
break;
case MotionEvent.ACTION_UP:
int scroll = getScrollX();
if (scroll > back_width / 2) {
scrollTo(back_width, 0);
isdelet = true;
} else {
scrollTo(0, 0);
isdelet = false;
}
if (Math.abs(x - downX) < 5) {
return false;
}
break;
case MotionEvent.ACTION_CANCEL:
scrollTo(0, 0);
break;
}
return true;
}

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int margeLeft = 0;
int size = getChildCount();
for (int i = 0; i < size; i++) {
View view = getChildAt(i);
if (view.getVisibility() != View.GONE) {
int childWidth = view.getMeasuredWidth();
view.layout(margeLeft, 0, margeLeft + childWidth,
view.getMeasuredHeight());
margeLeft += childWidth;
}
}
}
}

<?xml version="1.0" encoding="utf-8"?>
<com.example.gzl.mapplication.wedig.MyListViewItem xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">

<TextView
android:id="@+id/myitemtext"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center"
android:text="测试数据" />
</RelativeLayout>

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical">

<Button
android:id="@+id/mybtnBj"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="@color/biaoji_bg"
android:text="标记" />

<Button
android:id="@+id/mybtnDelete"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="@color/delet_bg"
android:text="删除" />
</LinearLayout>
</com.example.gzl.mapplication.wedig.MyListViewItem>

<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"
tools:context=".MainActivity">

<com.example.gzl.mapplication.wedig.MyListView
android:id="@+id/my_listview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none"/>

</RelativeLayout>