五、微信介面
在res裡邊建drawable,drawable裡邊建selector下的sel_r.xml:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<!--如果單選框被選中 就展示選中圖片 -->
<item android:state_checked="true" android:drawable="@drawable/message_true"/>
<!-- 預設情況下展示 -->
<item android:drawable="@drawable/message_false"/>
</selector>
在drawable-hdpi裡邊放兩張帶圈的圖形
1.佈局:
activity_main.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<RadioGroup
android:id="@+id/radioGroup1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/radio0"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:button="@null"
android:drawableTop="@drawable/sel_r"
android:gravity="center"
android:text="首頁" />
<RadioButton
android:id="@+id/radio1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:button="@null"
android:drawableTop="@drawable/sel_r"
android:gravity="center"
android:text="首頁" />
<RadioButton
android:id="@+id/radio2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:button="@null"
android:drawableTop="@drawable/sel_r"
android:gravity="center"
android:text="首頁" />
<RadioButton
android:id="@+id/radio3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:button="@null"
android:drawableTop="@drawable/sel_r"
android:gravity="center"
android:text="首頁" />
</RadioGroup>
</LinearLayout>
寫四個frag.xml
2.主方法:MainActivity
package com.example.day09a_03_wechat;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
public class MainActivity extends FragmentActivity {
private ViewPager pager;
private RadioGroup radioGroup;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pager = (ViewPager) findViewById(R.id.pager);
radioGroup = (RadioGroup) findViewById(R.id.radioGroup1);
// 設定第一個選中
radioGroup.check(radioGroup.getChildAt(0).getId());
// 資料
final ArrayList<Fragment> list = new ArrayList<Fragment>();
Frag_01 frag_01 = new Frag_01();
Frag_02 frag_02 = new Frag_02();
Frag_03 frag_03 = new Frag_03();
Frag_04 frag_04 = new Frag_04();
list.add(frag_01);
list.add(frag_02);
list.add(frag_03);
list.add(frag_04);
// 介面卡
// FragmentPagerAdapter(注意這裡有引數 記得寫,不然就報錯了)
pager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
@Override
public int getCount() {
return list.size();
}
@Override
public Fragment getItem(int arg0) {
return list.get(arg0);
}
});
// 頁面切換按鈕跟著切換
pager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
radioGroup.check(radioGroup.getChildAt(arg0).getId());
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
// 點選按鈕頁面切換
radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId) {
case R.id.radio0:
pager.setCurrentItem(0);
break;
case R.id.radio1:
pager.setCurrentItem(1);
break;
case R.id.radio2:
pager.setCurrentItem(2);
break;
case R.id.radio3:
pager.setCurrentItem(3);
break;
}
}
});
}
}
3.寫四個不一樣的frag.java:
package com.example.day09a_03_wechat;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class Frag_01 extends Fragment{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.frag_01, container,false);
return view ;
}
}