今天在项目中遇到了底部TabHost，顺便就写了一个底部TabHost的api继承即可使用非常简单，以下为源代码：
首先是自定义的TabHostActivity，如果要使用该TabHost继承该类即可
package com.api; import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TabHost;
import android.widget.TabHost.OnTabChangeListener;
import android.widget.TabHost.TabSpec;
import android.widget.TabWidget;
import android.widget.TextView; public abstract class TabHostActivity extends TabActivity { private TabHost mTabHost;
private TabWidget mTabWidget;
private LayoutInflater mLayoutflater; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// set theme because we do not want the shadow
setTheme(R.style.Theme_Tabhost);
setContentView(R.layout.api_tab_host); mLayoutflater = getLayoutInflater(); mTabHost = getTabHost();
mTabWidget = getTabWidget();
//mTabWidget.setStripEnabled(false); // need android2.2 prepare(); initTop();
initTabSpec();
} private void initTop() {
View child = getTop();
LinearLayout layout = (LinearLayout) findViewById(R.id.tab_top);
layout.addView(child);
} private void initTabSpec() { int count = getTabItemCount(); for (int i = 0; i < count; i++) {
// set text view
View tabItem = mLayoutflater.inflate(R.layout.api_tab_item, null); TextView tvTabItem = (TextView) tabItem.findViewById(R.id.tab_item_tv);
setTabItemTextView(tvTabItem, i);
// set id
String tabItemId = getTabItemId(i);
// set tab spec
TabSpec tabSpec = mTabHost.newTabSpec(tabItemId);
tabSpec.setIndicator(tabItem);
tabSpec.setContent(getTabItemIntent(i)); mTabHost.addTab(tabSpec);
} } /** 在初始化界面之前调用 */
protected void prepare() {
// do nothing or you override it
} /** 自定义头部布局 */
protected View getTop() {
// do nothing or you override it
return null;
} protected int getTabCount() {
return mTabHost.getTabWidget().getTabCount();
} /** 设置TabItem的图标和标题等*/
abstract protected void setTabItemTextView(TextView textView, int position); abstract protected String getTabItemId(int position); abstract protected Intent getTabItemIntent(int position); abstract protected int getTabItemCount(); protected void setCurrentTab(int index) {
mTabHost.setCurrentTab(index);
} protected void focusCurrentTab(int index) {
mTabWidget.focusCurrentTab(index);
} }
需要再创建一个javabean TabItem
package com.api.example.app;
import android.content.Intent;
public class TabItem {
private String title; // tab item title
private int icon; // tab item icon
private int bg; // tab item background
private Intent intent; // tab item intent
public TabItem(String title, int icon, int bg, Intent intent) {
super();
this.title = title;
this.icon = icon;
this.bg = bg;
this.intent = intent;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public int getIcon() {
return icon;
}
public void setIcon(int icon) {
this.icon = icon;
}
public int getBg() {
return bg;
}
public void setBg(int bg) {
this.bg = bg;
}
public Intent getIntent() {
return intent;
}
public void setIntent(Intent intent) {
this.intent = intent;
}
}
然后创建一个Activity继承上面的TabHostActivity即可使用该自定义的TabHost了
package com.api.example.app; import java.util.ArrayList;
import java.util.List; import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TabWidget;
import android.widget.TextView; import com.api.R;
import com.api.TabHostActivity; /**
* <p>整个流程就像使用ListView自定BaseAdapter一样</p>
*
* <p>如果要自定义TabHostActivity的Theme，并且不想要头部阴影
* 一定要添加这个android:windowContentOverlay = null</p>
*
* <p>如果想在别的项目里面使用TabHostActivity
* 可以项目的属性里面找到Android，然后在Library部分添加这个项目(Api)
* <a href="http://www.cnblogs.com/qianxudetianxia/archive/2011/05/01/2030232.html">如何添加</a></p>
* */
public class ExampleActivity extends TabHostActivity { List<TabItem> mItems;
private LayoutInflater mLayoutInflater; /**在初始化TabWidget前调用
* 和TabWidget有关的必须在这里初始化*/
@Override
protected void prepare() {
TabItem home = new TabItem(
"首页", // title
R.drawable.icon_home, // icon
R.drawable.example_tab_item_bg, // background
new Intent(this, Tab1Activity.class)); // intent TabItem info = new TabItem(
"资料",
R.drawable.icon_selfinfo,
R.drawable.example_tab_item_bg,
new Intent(this, Tab2Activity.class)); TabItem msg = new TabItem(
"信息",
R.drawable.icon_meassage,
R.drawable.example_tab_item_bg,
new Intent(this, Tab3Activity.class)); TabItem square = new TabItem(
"广场",
R.drawable.icon_square,
R.drawable.example_tab_item_bg,
new Intent(this, Tab4Activity.class)); TabItem more = new TabItem(
"更多",
R.drawable.icon_more,
R.drawable.example_tab_item_bg,
new Intent(this, Tab5Activity.class)); mItems = new ArrayList<TabItem>();
mItems.add(home);
mItems.add(info);
mItems.add(msg);
mItems.add(square);
mItems.add(more); // 设置分割线
TabWidget tabWidget = getTabWidget();
tabWidget.setDividerDrawable(R.drawable.tab_divider); mLayoutInflater = getLayoutInflater();
} @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setCurrentTab(0);
} /**tab的title，icon，边距设定等等*/
@Override
protected void setTabItemTextView(TextView textView, int position) {
textView.setPadding(3, 3, 3, 3);
textView.setText(mItems.get(position).getTitle());
textView.setBackgroundResource(mItems.get(position).getBg());
textView.setCompoundDrawablesWithIntrinsicBounds(0, mItems.get(position).getIcon(), 0, 0); } /**tab唯一的id*/
@Override
protected String getTabItemId(int position) {
return mItems.get(position).getTitle(); // 我们使用title来作为id，你也可以自定
} /**点击tab时触发的事件*/
@Override
protected Intent getTabItemIntent(int position) {
return mItems.get(position).getIntent();
} @Override
protected int getTabItemCount() {
return mItems.size();
} /**自定义头部文件*/
@Override
protected View getTop() {
return mLayoutInflater.inflate(R.layout.example_top, null);
} }
效果如下：
