Android开发之开发者头条(二)实现左滑菜单

<android.support.v4.widget.DrawerLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="true"
android:fitsSystemWindows="true" >
<include
android:id="@+id/rl_title"
layout="@layout/layout_main_title" />
<!-- The main content view -->
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/rl_title"
android:background="@color/white_normal" >
</FrameLayout>
</RelativeLayout>
<!-- The navigation view -->
<FrameLayout
android:id="@+id/left_drawer"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_gravity="start" >
<!-- 左侧菜单 -->
<include layout="@layout/layout_main_left" />
</FrameLayout>
</android.support.v4.widget.DrawerLayout> 

public class MainActivity extends FragmentActivity{
private DrawerLayout mDrawerLayout;
private RelativeLayout rlHome, rlGift, rlShare;
private int currentSelectItem = R.id.rl_home;// 默认首页
private ContentFragment contentFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
findViewById(R.id.iv_menu).setOnClickListener(clickListener);
initLeftMenu();//初始化左边菜单
contentFragment=new ContentFragment();
getSupportFragmentManager().beginTransaction().add(R.id.content_frame,contentFragment).commit(); 
setWindowStatus();
}
private void initLeftMenu() {
rlHome = (RelativeLayout) findViewById(R.id.rl_home);
rlGift = (RelativeLayout) findViewById(R.id.rl_gift);
rlShare = (RelativeLayout) findViewById(R.id.rl_share);
rlHome.setOnClickListener(onLeftMenuClickListener);
rlGift.setOnClickListener(onLeftMenuClickListener);
rlShare.setOnClickListener(onLeftMenuClickListener);
rlHome.setSelected(true);
}
private OnClickListener onLeftMenuClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
if (currentSelectItem != v.getId()) {//防止重复点击
currentSelectItem=v.getId();
noItemSelect();
switch (v.getId()) {
case R.id.rl_home:
rlHome.setSelected(true);
contentFragment.setContent("这是首页");
break;
case R.id.rl_gift:
rlGift.setSelected(true);
contentFragment.setContent("这是礼物兑换");
break;
case R.id.rl_share:
rlShare.setSelected(true);
contentFragment.setContent("这是我的分享");
break;
}
mDrawerLayout.closeDrawer(Gravity.LEFT);
}
}
};
private void noItemSelect(){
rlHome.setSelected(false);
rlGift.setSelected(false);
rlShare.setSelected(false);
}
private OnClickListener clickListener = new OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.iv_menu:// 打开左边抽屉
mDrawerLayout.openDrawer(Gravity.LEFT);
break;
}
}
};
// 设置状态栏
private void setWindowStatus() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
// 透明状态栏
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
// 透明导航栏
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
// 设置状态栏颜色
getWindow().setBackgroundDrawableResource(R.color.main_color);
}
}
}

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/menu_left_item_select" android:state_selected="true"/>
<item android:drawable="@color/white_normal"/>
</selector> 

public class ContentFragment extends Fragment{
private TextView tvContent;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState){
View rootView=LayoutInflater.from(getActivity()).inflate(R.layout.fragment_content, null);
tvContent=(TextView) rootView.findViewById(R.id.tv_content);
return rootView;
}
public void setContent(String content){
tvContent.setText(content);
}
}