Android TabHost 动态修改图标或者动态改变标题
abHost mTabHost;? /** Called when the activity is first created. */? @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main);? //取得TabHost对象 mTabHost = getTabHost();? /* 为TabHost添加标签 */ //新建一个newTabSpec(newTabSpec) //设置其标签和图标(setIndicator) //设置内容(setContent) mTabHost.addTab(mTabHost.newTabSpec("tab_1") .setIndicator("TAB 1",getResources().getDrawable(R.drawable.img1)) .setContent(R.id.textview1)); mTabHost.addTab(mTabHost.newTabSpec("tab_2") .setIndicator("TAB 2",getResources().getDrawable(R.drawable.img2)) .setContent(R.id.textview2)); mTabHost.addTab(mTabHost.newTabSpec("tab_3") .setIndicator("TAB 3",getResources().getDrawable(R.drawable.img3)) .setContent(R.id.textview3));? //设置TabHost的背景颜色 mTabHost.setBackgroundColor(Color.argb(150, 22, 70, 150)); //设置TabHost的背景图片资源 mTabHost.setBackgroundResource(R.drawable.bg0);? //设置当前显示哪一个标签 mTabHost.setCurrentTab(0);? //标签切换事件处理，setOnTabChangedListener mTabHost.setOnTabChangedListener(new OnTabChangeListener() { @Override public void onTabChanged(String tabId) { } }); }}?转入核心问题吧。?1.将TabHost的标题的图标改变吧。?首先我们应该获取到布局View，再获取对应的控件，图标应该是ImageView，文本应该是TextView。?代码如下：?View mView = mTabHost.getTabWidget().getChildAt(0);//0是代表第一个Tab?ImageView imageView = (ImageView)mView.findViewById(Android.R.id.icon);//获取控件imageView?imageView .setImageDrawable(getResources().getDrawable(R.drawable.img3)); //改变我们需要的图标?imageView = (ImageView)mTabHost.getTabWidget().getChildAt(1).findViewById(Android.R.id.icon);imageView .setImageDrawable(getResources().getDrawable(R.drawable.img2));imageView = (ImageView)mTabHost.getTabWidget().getChildAt(2).findViewById(Android.R.id.icon);imageView .setImageDrawable(getResources().getDrawable(R.drawable.img1));?2.将TabHost的标题改变吧。?TextView textview = (TextView)mTabHost.getTabWidget().getChildAt(0).findViewById(Android.R.id.title);textview.setTextSize(1);textview = (TextView)mTabHost.getTabWidget().getChildAt(1).findViewById(Android.R.id.title);textview.setTextSize(2);textview = (TextView)mTabHost.getTabWidget().getChildAt(2).findViewById(Android.R.id.title);textview.setTextSize(3);?其实获取了View，我们还可以再此基础上可以设置标题的颜色啊，字体啊，字体大小等等哦。