繼續，現在開始寫最重要的，實現代碼了，我們需要建立一個activity ，注意我的例子中的activity 不是主頁，這裏直接上代碼，看注析吧。
1、activity 的佈局如下：
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#ffffff"
xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout
android:id="@+id/relativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/wbg" >
<!-- 此layout 可以顯示主要的信息內容 -->
<FrameLayout
android:id="@+id/frameLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</FrameLayout>
<!-- 此layout 可以顯示的fragment數量與當前fragment位置-->
<FrameLayout
android:id="@+id/frameLayout2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="100dp">
<LinearLayout
android:id="@+id/layout_fragment_num"
android:layout_width="match_parent"
android:layout_height="44dp"
android:orientation="horizontal"
android:layout_gravity="bottom"
android:background="@color/gray"
android:gravity="center_vertical|center_horizontal" >
</LinearLayout>
</FrameLayout>
<!-- 此layout 可以顯示當前內容的附屬信息-->
<FrameLayout
android:id="@+id/frameLayout3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="0dp"
>
<LinearLayout
android:id="@+id/layout_fragment_bottom"
android:layout_width="match_parent"
android:layout_height="100dp"
android:orientation="horizontal"
android:layout_gravity="bottom"
android:background="#cccccc"
>
</LinearLayout>
</FrameLayout>
</RelativeLayout>
</LinearLayout>2、Java代碼
package com.example.testandroid;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.Window;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.TextView;
public class FragmentChangeActivity extends FragmentActivity implements OnGestureListener {
private static TextView[] numTexts;
public static Fragment[] fragments1;
public static Fragment[] fragments2;
/**定義手勢檢測實例*/
public static GestureDetector detector;
/**做標籤，記錄當前是哪個fragment*/
public int MARK=0;
/**定義手勢兩點之間的最小距離*/
final int DISTANT=50;
private LinearLayout layout_fragment_num;
private LinearLayout layout_fragment_bottom;
private FrameLayout frameLayout1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);//隱藏標題
setContentView(R.layout.activity_fragment_change);
frameLayout1=(FrameLayout) this.findViewById(R.id.frameLayout1);
//改變layout的透明度
layout_fragment_num=(LinearLayout) this.findViewById(R.id.layout_fragment_num);
layout_fragment_num.getBackground().setAlpha(100);//0-255，透明-不透明
//改變layout的透明度
layout_fragment_bottom=(LinearLayout) this.findViewById(R.id.layout_fragment_bottom);
layout_fragment_bottom.getBackground().setAlpha(0);
//假設當前需要動態添加3個
initTextViewToLayout(3,this);
changeTextViewColor(0);
setfragment();
//創建手勢檢測器
// 注意前一個this代表的是一個Context,後一個this代表的是一個OnGestureListener。
detector=new GestureDetector(this,this);
}
/**
* 動態添加TEXTVIEW
*/
private void initTextViewToLayout(int num,Context context){
numTexts=new TextView[num];
for(int i=0;i<num;i++){
TextView tv=new TextView(context);
tv.setText("●");
tv.setTextColor(getResources().getColor(R.color.gray1));
numTexts[i]=tv;
layout_fragment_num.addView(tv);
}
}
/**
* 改變TEXTVIEW的顏色
* @param mark
*/
private void changeTextViewColor(int mark){
for(int i=0;i<numTexts.length;i++){
numTexts[i].setTextColor(getResources().getColor(R.color.gray1));
}
numTexts[mark].setTextColor(getResources().getColor(R.color.white));
}
/**初始化fragment*/
public void setfragment()
{
fragments1=new Fragment[3];
fragments2=new Fragment[3];
fragments1[0]=new TabOfFragment01();
fragments1[1]=new TabOfFragment01();
fragments1[2]=new TabOfFragment01();
fragments2[0]=new TabOfFragment02();
fragments2[1]=new TabOfFragment02();
fragments2[2]=new TabOfFragment02();
getSupportFragmentManager().beginTransaction().replace(R.id.frameLayout1, fragments1[0]).commit();
getSupportFragmentManager().beginTransaction().replace(R.id.layout_fragment_bottom, fragments2[0]).commit();
}
/**
* 設置動畫
* @param ft
* @param slefId
*/
private void setAnim(FragmentTransaction ft,int slefId){
if(MARK>slefId)
ft.setCustomAnimations(R.anim.in_to_left, R.anim.out_to_right);
if(MARK<slefId)
ft.setCustomAnimations(R.anim.in_from_right, R.anim.out_to_left);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.fragment_change, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
// TODO Auto-generated method stub
//將該Activity上觸碰事件交給GestureDetector處理
return detector.onTouchEvent(event);
}
@Override
public boolean onDown(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onShowPress(MotionEvent e) {
// TODO Auto-generated method stub
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onLongPress(MotionEvent e) {
// TODO Auto-generated method stub
}
@Override
public boolean onFling(MotionEvent arg0, MotionEvent arg1, float velocityX,
float velocityY) {
// TODO Auto-generated method stub
FragmentTransaction ft=getSupportFragmentManager().beginTransaction();
FragmentTransaction ft1=getSupportFragmentManager().beginTransaction();
Bundle bundle = new Bundle();
int tmpMark=1;
System.out.println(arg0.getX()+"---"+arg1.getX());
//當是Fragment0的時候
if(MARK==0)
{
if(arg0.getX()>arg1.getX()+DISTANT)
{
tmpMark=1;
bundle.putString("pageNo", "1");
fragments1[tmpMark].setArguments(bundle);
setAnim(ft,tmpMark);
setAnim(ft1,tmpMark);
ft.replace(R.id.frameLayout1, fragments1[tmpMark]).commit();
ft1.replace(R.id.layout_fragment_bottom, fragments2[tmpMark]).commit();
this.changeTextViewColor(tmpMark);
MARK=tmpMark;
}
else
{
}
}
//當是Fragment1的時候
else if (MARK>=1 && MARK<numTexts.length-1)
{
if(arg0.getX()>arg1.getX()+DISTANT)
{
tmpMark=MARK+1;
bundle.putString("pageNo", ""+(tmpMark+1));
fragments1[tmpMark].setArguments(bundle);
fragments2[tmpMark].setArguments(bundle);
setAnim(ft,tmpMark);
setAnim(ft1,tmpMark);
ft.replace(R.id.frameLayout1, fragments1[tmpMark]).commit();
ft1.replace(R.id.layout_fragment_bottom, fragments2[tmpMark]).commit();
this.changeTextViewColor(tmpMark);
MARK=tmpMark;
}
else if(arg1.getX()>arg0.getX()+DISTANT)
{
tmpMark=MARK-1;
bundle.putString("pageNo", ""+(tmpMark+1));
fragments1[tmpMark].setArguments(bundle);
fragments2[tmpMark].setArguments(bundle);
setAnim(ft,tmpMark);
setAnim(ft1,tmpMark);
ft.replace(R.id.frameLayout1, fragments1[tmpMark]).commit();
ft1.replace(R.id.layout_fragment_bottom, fragments2[tmpMark]).commit();
this.changeTextViewColor(tmpMark);
MARK=tmpMark;
}
else
{
}
}
//當是Fragment5的時候
else if(MARK==numTexts.length-1)
{
if(arg1.getX()>arg0.getX()+DISTANT)
{
tmpMark=(numTexts.length-1)-1;
bundle.putString("pageNo", ""+(tmpMark+1));
fragments1[tmpMark].setArguments(bundle);
fragments2[tmpMark].setArguments(bundle);
setAnim(ft,tmpMark);
setAnim(ft1,tmpMark);
ft.replace(R.id.frameLayout1, fragments1[tmpMark]).commit();
ft1.replace(R.id.layout_fragment_bottom, fragments2[tmpMark]).commit();
this.changeTextViewColor(tmpMark);
MARK=tmpMark;
}
else
{
}
}
return false;
}
}