android 禁止ViewPager滑动

最近项目中,有个需求就是要禁止ViewPager滑动事件,我们看下360手机助手的界面,风格就类似这样的



大家如果使用过360手机助手就会发现中间内容是不可以滑动的,现在写一个demo,讲下怎么禁止ViewPager事件的滑动

布局文件

<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"

>

<com.example.viewpagears.ui.MyViewPager

android:id="@+id/viewpager"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

/>

</RelativeLayout>

自定义ViewPager类

public class MyViewPager extends ViewPager {

private static final String TAG = "MyViewPager";

private boolean result = false;

public MyViewPager(Context context, AttributeSet attrs) {

super(context, attrs);

}

public MyViewPager(Context context) {

super(context);

}

@Override

public boolean onInterceptTouchEvent(MotionEvent arg0) {

if(result)

return super.onInterceptTouchEvent(arg0);

else

return false;

}

@Override

public boolean onTouchEvent(MotionEvent arg0) {

if(result)

return super.onTouchEvent(arg0);

else

return false;

}

}

MainActivity.java

package com.example.viewpagears;

import java.util.ArrayList;

import java.util.List;

import android.app.Activity;

import android.os.Bundle;

import android.support.v4.view.PagerAdapter;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.ImageView;

import android.widget.Toast;

import com.example.viewpagears.ui.MyViewPager;

public class MainActivity extends Activity {

private MyViewPager viewpager;

private List<ImageView> views;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

initData();

viewpager = (MyViewPager) findViewById(R.id.viewpager);

MyAdapter adapter = new MyAdapter();

viewpager.setAdapter(adapter);

}

private void initData() {

views = new ArrayList<ImageView>();

for(int i=0;i<6;i++){

ImageView iv = new ImageView(this);

iv.setImageResource(R.drawable.ic_launcher);

iv.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

Toast.makeText(getApplicationContext(), "被点击了", 0).show();

}

});

views.add(iv);

}

}

class MyAdapter extends PagerAdapter{

@Override

public int getCount() {

// TODO Auto-generated method stub

return views.size();

}

@Override

public boolean isViewFromObject(View arg0, Object arg1) {

// TODO Auto-generated method stub

return arg0==arg1;

}

@Override

public void destroyItem(ViewGroup container, int position, Object object) {

container.removeView(views.get(position));

}

@Override

public Object instantiateItem(ViewGroup container, int position) {

// TODO Auto-generated method stub

container.addView(views.get(position));

return views.get(position);

}

}

}

其实我们在自定义Viewpager其实很简单就是重写了2个方法：onInterceptTouchEvent(),onTouchEvent()

onInterceptTouchEvent()表示拦截touch事件

onTouchEvent()触摸事件

在android中onTouchEvent默认是return true表示可以触摸,大家可以通过源码去看下,在这里就不讲了,onInterceptTouchEvent()不能返回true,如果return true子view什么事件都被拦截了,Viewpager对这个方法进行了一些重写,可以去看看他的源码,