【Android】通过Java代码替换TabHost中的drawableTop资源

在博客 http://blog.csdn.net/jueblog/article/details/11837445 中的Tab选项卡中，

点击相应的Tab选项，图标没有发生改变。

这些资源图片也没有尽用，若要使点击选项后，图标发生改变，可以在Java代码中实现。

改变drawableTop的Java代码：

tab_icon_weixin.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_weixin_pressed,0, 0);
							

从而，我们可以对Tab代码进行优化：

		main_radio.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
					@Override
					public void onCheckedChanged(RadioGroup group, int id) {
						if (id == tab_icon_weixin.getId()) {
							tab_icon_weixin.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_weixin_pressed,0, 0);
							tab_icon_address.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_address_normal,0, 0);
							tab_icon_find.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_find_frd_normal,0, 0);
							tab_icon_myself.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_settings_normal,0, 0);
							mTabHost.setCurrentTab(0);
						} else if (id == tab_icon_address.getId()) {
							tab_icon_weixin.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_weixin_normal,0, 0);
							tab_icon_address.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_address_pressed,0, 0);
							tab_icon_find.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_find_frd_normal,0, 0);
							tab_icon_myself.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_settings_normal,0, 0);
							mTabHost.setCurrentTab(1);
						} else if (id == tab_icon_find.getId()) {
							tab_icon_weixin.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_weixin_normal,0, 0);
							tab_icon_address.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_address_normal,0, 0);
							tab_icon_find.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_find_frd_pressed,0, 0);
							tab_icon_myself.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_settings_normal,0, 0);
							mTabHost.setCurrentTab(2);
						} else if (id == tab_icon_myself.getId()) {
							tab_icon_weixin.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_weixin_normal,0, 0);
							tab_icon_address.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_address_normal,0, 0);
							tab_icon_find.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_find_frd_normal,0, 0);
							tab_icon_myself.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.tab_settings_pressed,0, 0);
							mTabHost.setCurrentTab(3);
						}
					}
				});

从而可以得到想要的切换效果。