1. 实现底部的Tab,自定义TabContainerView 继承 RelativeLayout，这是我们最终封装的View工具类。其内部主要由viewpager和底部的TabHost类组成。

ViewPager初始化contentViewPager = new ViewPager(context);

LayoutParams contentVpLp = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

contentVpLp.addRule(RelativeLayout.ABOVE, R.id.divide_tab);

contentViewPager.setLayoutParams(contentVpLp);

contentViewPager.setId(R.id.viewpager_tab);

contentViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {            @Override

public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

}

·            @Override

public void onPageSelected(int position) {

tabHost.onChangeTabHostStatus(position);

Tab selectedTab = tabHost.getTabForIndex(position);                if (onTabSelectedListener != null && selectedTab != null) onTabSelectedListener.onTabSelected(selectedTab);

}

@Override

public void onPageScrollStateChanged(int state) {

}

});

addView(contentViewPager);底部Tab是一个自定义的横向布局LinearLayout,动态添加多个宽度等分的Tab按钮for (int i = 0; i

if((i+1)==hasMsgIndex){

hasMsg=true;

}

Tab tab = new Tab(context, textArray[i], textSize, textColor, selectedTextColor,drawablePadding,iconWidth,iconHeight, iconImageArray[i], selectedIconImageArray[i], i,hasMsg);

addTab(tab);}tab按钮的实现rootView = new LinearLayout(context);

childView=new RelativeLayout(context);

LinearLayout.LayoutParams rootViewLp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);

rootViewLp.weight = 1;

rootView.setOrientation(LinearLayout.VERTICAL);

rootView.setPadding(0,20,0,20);

rootView.setLayoutParams(rootViewLp);

textTextView = new TextView(context);

iconImageView = new ImageView(context);

/**

*  icon view

*/

iconImageView.setImageResource(iconImage);

RelativeLayout.LayoutParams iconParam=new RelativeLayout.LayoutParams(iconWidth==0? ViewGroup.LayoutParams.WRAP_CONTENT:iconWidth,iconHeight==0? ViewGroup.LayoutParams.WRAP_CONTENT:iconHeight);

iconParam.addRule(RelativeLayout.CENTER_HORIZONTAL);

iconImageView.setLayoutParams(iconParam);

iconImageView.setId(index+1);

childView.addView(iconImageView);

/**

*  text view

*/

textTextView.setText(text);

textTextView.setTextColor(textColor);

textTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX,textSize);

textTextView.setPadding(0,drawablePadding,0,0);

RelativeLayout.LayoutParams txParam=new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

txParam.addRule(RelativeLayout.BELOW,childView.getChildAt(0).getId());

txParam.addRule(RelativeLayout.CENTER_HORIZONTAL);

textTextView.setLayoutParams(txParam);

childView.addView(textTextView);

if(hasMsg){

ImageView circleView=new ImageView(context);

RelativeLayout.LayoutParams param = new RelativeLayout.LayoutParams(30,30);

param.addRule(RelativeLayout.RIGHT_OF,iconImageView.getId());

circleView.setBackgroundResource(R.drawable.common_red_round);

circleView.setLayoutParams(param);

childView.addView(circleView);

}

RelativeLayout.LayoutParams childParam=new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

childView.setLayoutParams(childParam);

rootView.addView(childView);

三、使用方法

布局中引用

android:id="@+id/tab_container"

android:layout_width="match_parent"

android:layout_height="match_parent"

app:tabTextColor="@color/bottom_icon_up"

app:selectedTextColor="@color/common_red"

app:tabTextSize="12sp"

app:drawablePadding="1dp"

app:iconHeight="22dp"

app:iconWidth="22dp"

app:divideLineColor="@color/common_line_two"

app:divideLineHeight="0.3dp"/>ACTIVITY中引用TabContainerView tabContainerView = (TabContainerView) findViewById(R.id.tab_container);

MainViewAdapter mainViewAdapter=new MainViewAdapter(getSupportFragmentManager(),

new Fragment[] {new TabFragment1(), new TabFragment2(),new TabFragment3(), new TabFragment4(),new TabFragment5()});

mainViewAdapter.setHasMsgIndex(5);

tabContainerView.setAdapter(mainViewAdapter);

tabContainerView.setOnTabSelectedListener(new OnTabSelectedListener() {

@Override

public void onTabSelected(Tab tab) {

}

});布局自定义属性介绍tabTextSize:导航按钮字体大小

drawablePadding：导航图片与文字的间距

iconHeight： 导航图标高度

iconWidth：导航图标宽度

divideLineColor：导航栏顶部分割线颜色

divideLineHeight：导航栏顶部分割线高度设置消息提醒(导航按钮旁边的红点)setHasMsgIndex(5); //第五个导航按钮有消息提醒demo地址：

https://github.com/Louis2014/TabView

打开App，阅读手记