最近比較懶惰，也沒有更新博客。今天就把剛剛實現的一個小效果分享給大家！
我的底部菜單是使用ActivityGroup實現的，先上代碼，ActivityGroup佈局：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<!-- 動態顯示界面 -->
<LinearLayout
android:id="@+id/bodyL"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
</LinearLayout>
<!-- 底部功能菜單欄 -->
<LinearLayout
android:layout_alignParentBottom="true"
android:layout_width="fill_parent"
android:layout_height="60px"
android:orientation="horizontal" >
<LinearLayout
android:id="@+id/home"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="5"
android:gravity="center_horizontal"
android:orientation="vertical"
android:background="@drawable/tab_background" >
<ImageView
android:layout_width="32dp"
android:layout_height="35dp"
android:layout_gravity="top|center"
android:layout_marginTop="4dp"
android:background="@drawable/home" />
</LinearLayout>
<LinearLayout
android:id="@+id/gamebox"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="5"
android:gravity="center_horizontal"
android:orientation="vertical"
android:background="@drawable/tab_background" >
<ImageView
android:layout_width="32dp"
android:layout_height="35dp"
android:layout_gravity="top|center"
android:layout_marginTop="4dp"
android:background="@drawable/gamebox" />
</LinearLayout>
<LinearLayout
android:id="@+id/team"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="5"
android:gravity="center_horizontal"
android:orientation="vertical"
android:background="@drawable/tab_background" >
<ImageView
android:layout_width="32dp"
android:layout_height="35dp"
android:layout_gravity="top|center"
android:layout_marginTop="4dp"
android:background="@drawable/team" />
</LinearLayout>
<LinearLayout
android:id="@+id/more"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="5"
android:gravity="center_horizontal"
android:orientation="vertical"
android:background="@drawable/tab_background" >
<ImageView
android:layout_width="32dp"
android:layout_height="35dp"
android:layout_gravity="top|center"
android:layout_marginTop="4dp"
android:background="@drawable/more" />
</LinearLayout>
</LinearLayout>
<!-- 底部焦點 使用Imageview 注意要放在RelativeLayout最後 纔可遮擋後面的菜單 建議使用半透明圖片 -->
<ImageView android:layout_alignParentBottom="true" android:id="@+id/tab_selector" android:layout_width="wrap_content" android:layout_height="60px" android:src="@drawable/tab_highlight"/>
</RelativeLayout>
ActivityGroup 代碼：
public class ActsGroup extends ActivityGroup {
private DisplayMetrics _dm = null; // 獲得分辨率
private ImageView _tab_selector = null; //焦點控件
private LinearLayout bodyView;
private LinearLayout home, gamebox, team, more;
private int flag = 0; // 通過標記跳轉不同的頁面，顯示不同的菜單項
private int temp_flag = 0;
// private String parameter = Constant.BUTTON_HOME;// 初始化加載
public ActsGroup(){
_dm = new DisplayMetrics();
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE); //無標題
super.onCreate(savedInstanceState);
setContentView(R.layout.acts_group);
suitScreen();
initMainView();
// 主界面開始接收參數
Bundle bundle = getIntent().getExtras();
if (null != bundle) {
flag = bundle.getInt("flag");
}
// 默認顯示 播放界面
showView(flag);
home.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
flag = 0;
showView(flag);
}
});
gamebox.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
flag = 1;
showView(flag);
}
});
team.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
flag = 2;
showView(flag);
}
});
more.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
flag = 3;
showView(flag);
}
});
}
/*
* 初始化主界面底部的功能菜單
*/
public void initMainView() {
bodyView = (LinearLayout) findViewById(R.id.bodyL);
home = (LinearLayout) findViewById(R.id.home);
gamebox = (LinearLayout) findViewById(R.id.gamebox);
team = (LinearLayout) findViewById(R.id.team);
more = (LinearLayout) findViewById(R.id.more);
}
/**
* 適應不同分辨率 設置焦點控件的寬度
*/
private void suitScreen(){
getWindowManager().getDefaultDisplay().getMetrics(_dm);
_tab_selector = (ImageView) findViewById(R.id.tab_selector);
LayoutParams para = _tab_selector.getLayoutParams();
para.height = 60;
para.width = _dm.widthPixels>>2; //我底部四個按鍵所以 每個佔1/4寬度
_tab_selector.setLayoutParams(para);
}
// 在主界面中顯示其他界面
public void showView(int flag) {
switch (flag) {
case 0:
showHome();
break;
case 1:
showGamebox();
break;
case 2:
showTeam();
break;
case 3:
showMore();
break;
default:
break;
}
}
/**
* 根據不同的temp_flag，flag 生成不同的animation，主要是設置fromX和toX
*/
public void animationShow(){
if(temp_flag!=flag){
System.out.println("fromX:"+temp_flag/4f+",toX::"+flag/4f);
AnimationSet as = new AnimationSet(true);
TranslateAnimation ta = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, temp_flag/4f, Animation.RELATIVE_TO_PARENT, flag/4f, Animation.RELATIVE_TO_SELF, 0f, Animation.RELATIVE_TO_SELF, 0f);
ta.setDuration(500);
as.setFillAfter(true);
as.addAnimation(ta);
_tab_selector.startAnimation(as);
temp_flag = flag;
}
}
public void showHome() {
bodyView.removeAllViews();
bodyView.addView(getLocalActivityManager().startActivity("home",
new Intent(ActsGroup.this, Home_Activity.class)).getDecorView());
animationShow();
}
public void showGamebox() {
bodyView.removeAllViews();
bodyView.addView(getLocalActivityManager().startActivity(
"gamebox", new Intent(ActsGroup.this, GameBox_Activity.class))
.getDecorView());
animationShow();
}
public void showTeam() {
bodyView.removeAllViews();
bodyView.addView(getLocalActivityManager().startActivity("team",
new Intent(ActsGroup.this, GameBox_Activity.class)).getDecorView());
animationShow();
}
public void showMore() {
bodyView.removeAllViews();
bodyView.addView(getLocalActivityManager().startActivity("more",
new Intent(ActsGroup.this, GameBox_Activity.class)).getDecorView());
animationShow();
}
}最後的效果是 當你點擊不同的底部tab 高亮塊兒（選擇焦點）會移動到相應位置.
gif效果不太好，動的比較快，大家就看看意思吧，實際效果和網易新聞、機鋒市場等應用的效果一樣！
有什麼問題可以留言~