Android -下拉刷新，ViewPager和ScrollView嵌套滚动问题解决方案

》ViewPager和ScrollView嵌套滚动问题解决方案，即View冲突，重绘冲突的那部分的View的大小，宽度和高度，根据具体情况而定。

View视图和图层。。

下面的情况是重绘了ViewPager的高度：resetViewPagerHeight(int position)

-------------Java代码如下：

import android.os.AsyncTask;

import android.os.Bundle;

import android.support.v4.app.FragmentActivity;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.view.View;

import android.widget.LinearLayout;

import android.widget.LinearLayout.LayoutParams;

public class Solution3Activity extends FragmentActivity {

private ViewPager viewPager;

private ViewPagerFragmentAdapter adapter;

private MyListener listener = new MyListener();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_solution3);

viewPager = (ViewPager) findViewById(R.id.viewPager);

adapter = new ViewPagerFragmentAdapter(getSupportFragmentManager());

adapter.addFragment(new Content1Fragment());

adapter.addFragment(new Content2Fragment());

adapter.addFragment(new Content3Fragment());

viewPager.setOffscreenPageLimit(3);

viewPager.setOnPageChangeListener(listener);

viewPager.setAdapter(adapter);

// 模拟网络请求完成之后重置ViewPager高度

new myAsyncTask().execute();

}

/**

* 重新设置viewPager高度

*

* @param position

*/

public void resetViewPagerHeight(int position)
{

View child = viewPager.getChildAt(position);

if (child != null) {

child.measure(0, 0);

int h = child.getMeasuredHeight();

LinearLayout.LayoutParams params = (LayoutParams) viewPager

.getLayoutParams();

params.height = h + 50;

viewPager.setLayoutParams(params);

}

}

public class MyListener implements OnPageChangeListener {

@Override

public void onPageScrollStateChanged(int arg0) {

}

@Override

public void onPageScrolled(int position, float positionOffset,

int positionOffsetPixels) {

}

@Override

public void onPageSelected(int position) {

// 页面切换后重置ViewPager高度

resetViewPagerHeight(position);

switch (position) {

case 0:

break;

case 1:

break;

case 2:

break;

}

}

}

public class myAsyncTask extends AsyncTask<Void, Void, Void> {

@Override

protected Void doInBackground(Void... params) {

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

return null;

}

@Override

protected void onPostExecute(Void result) {

resetViewPagerHeight(0);

}

}

}

---- XML布局文件

<LinearLayout 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:orientation="vertical" >

<com.hellsam.scrollviewwithviewpager.CustomScrollView

android:layout_width="match_parent"

android:layout_height="wrap_content" >

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="vertical" >

<RelativeLayout

android:layout_width="match_parent"

android:layout_height="350dp"

android:background="#0000FF" >

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_centerInParent="true"

android:text="很大一块内容 H:350dp"

android:textColor="#FFFFFF" />

</RelativeLayout>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="30dp"

android:orientation="horizontal" >

<TextView

android:layout_width="0dp"

android:layout_height="match_parent"

android:layout_weight="1"

android:gravity="center"

android:text="内容1 H:300dp" />

<TextView

android:layout_width="0dp"

android:layout_height="match_parent"

android:layout_weight="1"

android:gravity="center"

android:text="内容2 H:500dp" />

<TextView

android:layout_width="0dp"

android:layout_height="match_parent"

android:layout_weight="1"

android:gravity="center"

android:text="内容3 H:800dp" />

</LinearLayout>

<android.support.v4.view.ViewPager

android:id="@+id/viewPager"

android:layout_width="match_parent"

android:layout_height="wrap_content" />

</LinearLayout>

</com.hellsam.scrollviewwithviewpager.CustomScrollView>

</LinearLayout>