TabActivity 使用
TabActivity
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[功能]
一个TabActivity 包含 数个标签
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[代码 步骤]
1. 得到 TabHost 的实例
TabHost host = this.getTabHost();
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2. 定义 CustomTabs 用于填充 TabHost 各个标签布局用
public class CustomTabs implements TabHost.TabContentFactory {Activity activity;LayoutInflater inflater;LinearLayout layout;public CustomTabs (Activity a) {activity = a;inflater = activity.getLayoutInflater();}/** {@inheritDoc} */ public View createTabContent(String tag) { activity.setTitle(tag); return addCustomView(tag); } public View addCustomView(String id){ layout = new LinearLayout(activity); layout.setOrientation(LinearLayout.VERTICAL); if(id.equals(TAB1)){ ImageView iv = new ImageView(activity); iv.setImageResource(R.drawable.o); layout.addView(iv, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT)); } else if(id.equals(TAB2)){ EditText edit = new EditText(activity); layout.addView(edit, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)); Button btn = new Button(activity); btn.setText("OK"); layout.addView(btn, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT)); RadioGroup group = new RadioGroup(activity); group.setOrientation(LinearLayout.HORIZONTAL); RadioButton radio1 = new RadioButton(activity); radio1.setText("Radio 1"); group.addView(radio1); RadioButton radio2 = new RadioButton(activity); radio2.setText("Radio 2"); group.addView(radio2); layout.addView(group, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT)); } else if(id.equals(TAB3)){ LinearLayout.LayoutParams param3 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT); layout.addView(inflater.inflate(R.layout.item_3, null),param3); } else if(id.equals(TAB4)){ LinearLayout.LayoutParams param4 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT); layout.addView(inflater.inflate(R.layout.item_4, null),param4); } else { TextView tv5 = new TextView(activity); tv5.setText("no resource aviable!"); tv5.setGravity(1); layout.addView(tv5, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT)); } return layout; }}?
3. 使用 CustomTabs
host.addTab(host.newTabSpec(TAB1) .setIndicator("Tab 1", getResources().getDrawable(R.drawable.beijing_001_mb5ucom)) .setContent(item));?
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4. 标签变化的监听函数
host.setOnTabChangedListener(new OnTabChangeListener(){@Overridepublic void onTabChanged(String tabId) {// TODO Auto-generated method stub} });?
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5. emulator 运行截图：
?* 标签1
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* 标签2
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* 标签3
