...滑动,往左滑也不行,往左右滑怎么都滑不过来,怎么回事啊?
发布网友
发布时间：2024-10-23 21:43
共4个回答
热心网友
时间：2024-10-26 12:22
1.首先看看布局
主布局main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<HorizontalScrollView
android:id="@+id/horizontalscrollview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/item"
android:fadingEdge="@null"
android:scrollbars="none" >
<LinearLayout
android:id="@+id/linearlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
>
</LinearLayout>
</HorizontalScrollView>
<android.support.v4.view.ViewPager
android:id="@+id/viewpaper"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_weight="1" >
</android.support.v4.view.ViewPager>
</LinearLayout>
2,接着看看QQonline.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@drawable/image2">
<ExpandableListView
android:id="@+id/elistview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
/>
</LinearLayout>
3.接着看看主活动的实现过程ViewPaper1Activity.java
package com.wang;
import java.util.ArrayList;
import android.app.ActivityGroup;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.LinearLayout.LayoutParams;
public class ViewPaper1Activity extends ActivityGroup implements
OnClickListener {
private RadioGroup radioGroup;
private String array[] = { "QQ空间", "QQ", "QQ消息" };
private LinearLayout linearLayout;
private ArrayList<TextView> textViews;
private ViewPager viewPager;
private ArrayList<View> pageViews;
private HorizontalScrollView horizontalScrollView;
/***
*初始化视图
*
*
*/
void InItView() {
// 构造一个新的ArrayList实例对象
pageViews = new ArrayList<View>();
/**
* 开始一个新的活动中运行的组织。 每一个活动你开始必须有一个独一无二的字符串标识与其相关联
* **/
View view1 = getLocalActivityManager().startActivity("main1",
new Intent(this, main1.class)).getDecorView();
View view2 = getLocalActivityManager().startActivity("main2",
new Intent(this, QQonline.class)).getDecorView();
View view3 = getLocalActivityManager().startActivity("main3",
new Intent(this, main3.class)).getDecorView();
// 添加指定的对象在文章末尾的ArrayList。
pageViews.add(view1);
pageViews.add(view2);
pageViews.add(view3);
}
/***
* 初始化话标题栏
*/
void InItTitle() {
// 获取窗口管理器显示自定义窗口,去掉默认显示对象。得到1/3屏幕宽度
int width = getWindowManager().getDefaultDisplay().getWidth() / 3;
for (int i = 0; i < array.length; i++) {
// 声明一个radioButton对象
RadioButton radioButton = new RadioButton(this, null);
radioButton.setText(array[i]);
radioButton.setWidth(width);
radioButton.setHeight(70);
// 集水平对齐文本和垂直重力的时候将会使用有额外的空间在TextView超出要求的文本本身
radioButton.setGravity(Gravity.CENTER);
// 添加子视图。如果没有布局参数对孩子已经设置,默认参数对于这个ViewGroup上设置的孩子。
radioGroup.addView(radioButton);
}
}
/***
* 初始化文本
*/
void initTextView() {
// 声明一个ArrayList对象
textViews = new ArrayList<TextView>();
// 获取窗口管理器显示自定义窗口,去掉默认显示对象。得到1/3屏幕宽度
int width = getWindowManager().getDefaultDisplay().getWidth() / 3;
int height = 60;
for (int i = 0; i < array.length; i++) {
TextView textView = new TextView(this);
textView.setText(array[i]);
textView.setTextSize(17);
textView.setWidth(width);
textView.setHeight(height - 30);
textView.setGravity(Gravity.CENTER);
textView.setId(i);
// 设置文本的监听事件
textView.setOnClickListener(this);
textViews.add(textView);
LinearLayout.LayoutParams layoutParams = new LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
layoutParams.width = 1;
layoutParams.height = height - 40;
layoutParams.gravity = Gravity.CENTER;
// 添加子视图。如果没有布局参数对孩子已经设置,默认参数对于这个ViewGroup上设置的孩子。
linearLayout.addView(textView);
}
}
/***
* 选中后的处理
*/
public void select(int id) {
for (int i = 0; i < array.length; i++) {
if (id == i) {
// 得到图片的资源
Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
R.drawable.itembg);
// 设置背景图
textViews.get(id).setBackgroundDrawable(
new BitmapDrawable(bitmap));
viewPager.setCurrentItem(i);
}
else {
textViews.get(i).setBackgroundDrawable(new BitmapDrawable());
}
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 去除标题栏
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
// 取消状态栏，充满全屏
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
// 实例化组件
linearLayout = (LinearLayout) findViewById(R.id.linearlayout);
viewPager = (ViewPager) findViewById(R.id.viewpaper);
horizontalScrollView = (HorizontalScrollView) findViewById(R.id.horizontalscrollview);
// 调用方法实现
initTextView();
select(0);
InItView();
viewPager.setAdapter(new PagerAdapter() {
// 得到数目
public int getCount() {
return pageViews.size();
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
@Override
public int getItemPosition(Object object) {
// TODO Auto-generated method stub
return super.getItemPosition(object);
}
@Override
public void destroyItem(View view, int id, Object arg2) {
// TODO Auto-generated method stub
((ViewPager) view).removeView(pageViews.get(id));
}
// 获取每一个item的id
@Override
public Object instantiateItem(View view, int id) {
((ViewPager) view).addView(pageViews.get(id));
return pageViews.get(id);
}
});
// 页面改变时候的监听事件
viewPager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
select(arg0);
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
@Override
public void onClick(View v) {
select(v.getId());
}
}
4.接着看看QQonline.java 的实现
package com.wang;
import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.Toast;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.ExpandableListView.OnGroupClickListener;
import android.widget.ExpandableListView.OnGroupCollapseListener;
import android.widget.ExpandableListView.OnGroupExpandListener;
public class QQonline extends Activity {
// 创建一个上下文菜单的方法
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
// 一个垂直滚动的两级列表。取得菜单项
ExpandableListView.ExpandableListContextMenuInfo info = (ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
// 获得这个类型 的位置
int type = ExpandableListView
.getPackedPositionType(info.packedPosition);
// 取得所在组的索引
int group = ExpandableListView
.getPackedPositionGroup(info.packedPosition);
// 取得子菜单的索引
int child = ExpandableListView
.getPackedPositionGroup(info.packedPosition);
Toast.makeText(QQonline.this,
"类型 =" + type + " 分组：" + group + " 子选项：" + child,
Toast.LENGTH_LONG).show();
}
private ExpandableListView eListView = null;
private ExpandableListAdapter adapter = null;
@Override
public void onCreate(Bundle savedInstanceState) {
// 去除标题,
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
// 取消状态栏，充满全屏
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
super.setContentView(R.layout.qqonline);
// 实例化组件
this.eListView = (ExpandableListView) findViewById(R.id.elistview);
// 声明一个adapter对象
adapter = new myExpendableadapler(this);
// 设置适配器提供了数据
this.eListView.setAdapter(this.adapter);
// 注册一个上下文菜单显示给定的视图(多个视图可以显示上下文菜单)。
super.registerForContextMenu(this.eListView);
// 设置点击时候触发的事件 1，子选项点击事件 2。父选项单击事件 3.分组打开事件 4.分组关闭事件
this.eListView.setOnChildClickListener(new ChildClickListener());
this.eListView.setOnGroupClickListener(new GroupClickListener());
this.eListView.setOnGroupExpandListener(new GroupExpandListener());
this.eListView.setOnGroupCollapseListener(new GroupCollapseListener());
}
// /1，子选项点击事件
private class ChildClickListener implements OnChildClickListener {
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
Toast
.makeText(
QQonline.this,
"子选项被选中,所的组：" + groupPosition + " 子选项的位置："
+ childPosition, Toast.LENGTH_LONG).show();
return false;
}
}
// 2。父选项单击事件
private class GroupClickListener implements OnGroupClickListener {
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
Toast.makeText(QQonline.this, "分组选项被选中,所在组： " + groupPosition,
Toast.LENGTH_LONG).show();
return false;
}
}
// 3.分组打开事件
private class GroupExpandListener implements OnGroupExpandListener {
public void onGroupExpand(int groupPosition) {
// TODO Auto-generated method stub
Toast.makeText(QQonline.this, "打开分组,所在组：" + groupPosition,
Toast.LENGTH_LONG).show();
}
}
// 4.分组关闭事件
private class GroupCollapseListener implements OnGroupCollapseListener {
public void onGroupCollapse(int groupPosition) {
Toast.makeText(QQonline.this, "关闭分组,所在组：" + groupPosition,
Toast.LENGTH_LONG).show();
}
}
}
5.接着需要myExpendableadapler.java
package com.wang;
import android.content.Context;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseExpandableListAdapter;
import android.widget.TextView;
public class myExpendableadapler extends BaseExpandableListAdapter {
// 组名称
private String[] group = new String[] { "在线好友", "高中同学", "南阳理工同学", "寝室哥们" };
// 子选项的名字
private String[][] child = new String[][] {
{ "李彦宏", "马云", "雷军", "周鸿祎", "唐骏", "赵威威", "李冕", "马海刚", "李斌", "刘洪刚",
"马玉龙", "刘慧敏", "王文龙" },
{ "赵威威", "李冕", "马海刚", "李斌", "刘洪刚", "马玉龙", "刘慧敏", "王文龙" },
{ "张紫阳", "王亚光", "刘一鸣", "崔芳芳", "董卫杰", "刘永乐" },
{ "武云册", "王俊伟", "王杰", "付永振", "杜新峰", "应志超" } };
private Context context = null;
// 构造函数
public myExpendableadapler(Context context) {
this.context = context;
}
public Object getChild(int groupPosition, int childPosition) {
return this.child[groupPosition][childPosition];
}
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
private TextView buildTextView() {
// LayoutParams AbsListView扩展提供一个位置来保存视图类型。
AbsListView.LayoutParams params = new AbsListView.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, 40);
TextView textView = new TextView(this.context);
textView.setLayoutParams(params);
// 大小
textView.setTextSize(15.0f);
textView.setGravity(Gravity.LEFT + 3);
textView.setPadding(40, 8, 3, 3);
return textView;
}
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
TextView textView = new TextView(this.context);
// 得到每组的子选项并转换成字符串
textView
.setText(this.getChild(groupPosition, childPosition).toString());
return textView;
}
// 统计子选项的个数
public int getChildrenCount(int groupPosition) {
// TODO Auto-generated method stub
return this.child[groupPosition].length;
}
// 得到复选项的位置
public Object getGroup(int groupPosition) {
// TODO Auto-generated method stub
return this.group[groupPosition];
}
// 得到复选项的个数
public int getGroupCount() {
// TODO Auto-generated method stub
return this.group.length;
}
// 得到复选项的id
public long getGroupId(int groupPosition) {
// TODO Auto-generated method stub
return groupPosition;
}
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
TextView textView = this.buildTextView();
textView.setText(this.getGroup(groupPosition).toString());
return textView;
}
// 是否子选项和父选项id是稳定在改变底层数据。
public boolean hasStableIds() {
// TODO Auto-generated method stub
return true;
}
// p判断子选项是否可以选择
public boolean isChildSelectable(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return true;
}
}
6.有两个界面还没有添加功能main1.java
package com.wang;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ImageView;
public class main1 extends Activity {
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main1);
}
}
7:没有添加功能的main3.java
package com.wang;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ImageView;
public class main3 extends Activity {
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main3);
}
}
8.由于用到Activity，要注意注册！！
<activity android:name=".main1"></activity>
<activity android:name=".QQonline"></activity>
<activity android:name=".main3"></activity>
9.最后，还有一个重要的问题，本程序需要第三方jar包的支持，所以呢还需要导入第三方android-support-v4.jar包
热心网友
时间：2024-10-26 12:24
QQ查看图片时不能向右滑动，往左滑动也不行，可能是因为现在使用的手机QQ版本功能不稳定，升级到最新版本的手机QQ可能就好了。
热心网友
时间：2024-10-26 12:26
Bug呗，QQ有时候是会这样的，可能你看的图片是那种表情包，不算是一样的。
欢迎采纳～
热心网友
时间：2024-10-26 12:26
图片格式的问题吧。
