吳裕雄--天生自然ANDROID開發學習：2.6.4 DrawerLayout(官方側滑選單)的簡單使用
阿新 • • 發佈：2020-08-29
activity_main.xml：
<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">
<FrameLayout
android:id="@+id/ly_content"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ListView
android:id="@+id/list_left_drawer"
android:layout_width="180dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#080808"
android:choiceMode="singleChoice"
android:divider="#FFFFFF"
android:dividerHeight="1dp" />
</android.support.v4.widget.DrawerLayout>
接著ListView的佈局程式碼和domain類：Item比較簡單，就不給出了，直接上中間Fragment的 佈局以及程式碼吧！另外Adapter直接複用我們之前寫的那個可複用的MyAdapter！
fg_content.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/tv_content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textSize="25sp" />
</RelativeLayout>
ContentFragment.java：
/**
* Created by Jay on 2015/10/8 0008.
*/
public class ContentFragment extends Fragment {
private TextView tv_content;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fg_content, container, false);
tv_content = (TextView) view.findViewById(R.id.tv_content);
String text = getArguments().getString("text");
tv_content.setText(text);
return view;
}
}
最後是我們的Activity類
MainActivity.java：
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemClickListener{
private DrawerLayout drawer_layout;
private ListView list_left_drawer;
private ArrayList<Item> menuLists;
private MyAdapter<Item> myAdapter = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawer_layout = (DrawerLayout) findViewById(R.id.drawer_layout);
list_left_drawer = (ListView) findViewById(R.id.list_left_drawer);
menuLists = new ArrayList<Item>();
menuLists.add(new Item(R.mipmap.iv_menu_realtime,"實時資訊"));
menuLists.add(new Item(R.mipmap.iv_menu_alert,"提醒通知"));
menuLists.add(new Item(R.mipmap.iv_menu_trace,"活動路線"));
menuLists.add(new Item(R.mipmap.iv_menu_settings,"相關設定"));
myAdapter = new MyAdapter<Item>(menuLists,R.layout.item_list) {
@Override
public void bindView(ViewHolder holder, Item obj) {
holder.setImageResource(R.id.img_icon,obj.getIconId());
holder.setText(R.id.txt_content, obj.getIconName());
}
};
list_left_drawer.setAdapter(myAdapter);
list_left_drawer.setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
ContentFragment contentFragment = new ContentFragment();
Bundle args = new Bundle();
args.putString("text", menuLists.get(position).getIconName());
contentFragment.setArguments(args);
FragmentManager fm = getSupportFragmentManager();
fm.beginTransaction().replace(R.id.ly_content,contentFragment).commit();
drawer_layout.closeDrawer(list_left_drawer);
}
}
示例2.左右兩個側滑選單的實現
左邊Fragment：
佈局：fg_left.xml，這裡就用了一個圖片而以，點選後彈出一個新的Activity； 當然你可以根據自己的需求進行擴充套件！
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/img_bg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@mipmap/bg_menu_left"/>
</LinearLayout>
對應的LeftFragment.java：
/**
* Created by Jay on 2015/10/9 0009.
*/
public class LeftFragment extends Fragment{
private DrawerLayout drawer_layout;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fg_left, container, false);
ImageView img_bg = (ImageView) view.findViewById(R.id.img_bg);
img_bg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getActivity().startActivity(new Intent(getActivity(),OtherActivity.class));
drawer_layout.closeDrawer(Gravity.START);
}
});
return view;
}
//暴露給Activity，用於傳入DrawerLayout，因為點選後想關掉DrawerLayout
public void setDrawerLayout(DrawerLayout drawer_layout){
this.drawer_layout = drawer_layout;
}
}
右面的Fragment：
佈局就三個按鈕，點選後替換中間部分的Fragment，佈局fg_right.xml程式碼如下：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#2F9AF2"
android:gravity="center"
android:orientation="vertical">
<Button
android:id="@+id/btn_one"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="選單項一" />
<Button
android:id="@+id/btn_two"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="選單項二" />
<Button
android:id="@+id/btn_three"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="選單項三" />
</LinearLayout>
然後對應的是RightFragment.java：
/**
* Created by Jay on 2015/10/9 0009.
*/
public class RightFragment extends Fragment implements View.OnClickListener{
private DrawerLayout drawer_layout;
private FragmentManager fManager;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fg_right, container, false);
view.findViewById(R.id.btn_one).setOnClickListener(this);
view.findViewById(R.id.btn_two).setOnClickListener(this);
view.findViewById(R.id.btn_three).setOnClickListener(this);
fManager = getActivity().getSupportFragmentManager();
return view;
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.btn_one:
ContentFragment cFragment1 = new ContentFragment("1.點選了右側選單項一",R.color.blue);
fManager.beginTransaction().replace(R.id.fly_content,cFragment1).commit();
drawer_layout.closeDrawer(Gravity.END);
break;
case R.id.btn_two:
ContentFragment cFragment2 = new ContentFragment("2.點選了右側選單項二",R.color.red);
fManager.beginTransaction().replace(R.id.fly_content,cFragment2).commit();
drawer_layout.closeDrawer(Gravity.END);
break;
case R.id.btn_three:
ContentFragment cFragment3 = new ContentFragment("3.點選了右側選單項三",R.color.yellow);
fManager.beginTransaction().replace(R.id.fly_content,cFragment3).commit();
drawer_layout.closeDrawer(Gravity.END);
break;
}
}
public void setDrawerLayout(DrawerLayout drawer_layout){
this.drawer_layout = drawer_layout;
}
}
另外還有一箇中間部分填充的ContentFragment，佈局：fg_content.xml如下：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/tv_content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textSize="25sp" />
</RelativeLayout>
ContentFragment.java：
public class ContentFragment extends Fragment {
private TextView tv_content;
private String strContent;
private int bgColor;
public ContentFragment(String strContent,int bgColor) {
this.strContent = strContent;
this.bgColor = bgColor;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fg_content, container, false);
view.setBackgroundColor(getResources().getColor(bgColor));
tv_content = (TextView) view.findViewById(R.id.tv_content);
tv_content.setText(strContent);
return view;
}
}
編寫好以後，就到我們的Activity的佈局了以及Activity的程式碼了： 在此之前我們還需要些一個頂部條形欄的佈局：
view_topbar.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#DCDEDB">
<Button
android:id="@+id/btn_right"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:background="@drawable/btn_selctor"/>
</RelativeLayout>
然後是activity_main.xml：
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include
android:id="@+id/topbar"
layout="@layout/view_topbar"
android:layout_width="wrap_content"
android:layout_height="48dp" />
<FrameLayout
android:id="@+id/fly_content"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<fragment
android:id="@+id/fg_left_menu"
android:name="jay.com.drawerlayoutdemo2.LeftFragment"
android:layout_width="300dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:tag="LEFT"
tools:layout="@layout/fg_left" />
<fragment
android:id="@+id/fg_right_menu"
android:name="jay.com.drawerlayoutdemo2.RightFragment"
android:layout_width="100dp"
android:layout_height="match_parent"
android:layout_gravity="end"
android:tag="RIGHT"
tools:layout="@layout/fg_right" />
</android.support.v4.widget.DrawerLayout>
最後是MainActivity.java：
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private DrawerLayout drawer_layout;
private FrameLayout fly_content;
private View topbar;
private Button btn_right;
private RightFragment fg_right_menu;
private LeftFragment fg_left_menu;
private FragmentManager fManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
fManager = getSupportFragmentManager();
fg_right_menu = (RightFragment) fManager.findFragmentById(R.id.fg_right_menu);
fg_left_menu = (LeftFragment) fManager.findFragmentById(R.id.fg_left_menu);
initViews();
}
private void initViews() {
drawer_layout = (DrawerLayout) findViewById(R.id.drawer_layout);
fly_content = (FrameLayout) findViewById(R.id.fly_content);
topbar = findViewById(R.id.topbar);
btn_right = (Button) topbar.findViewById(R.id.btn_right);
btn_right.setOnClickListener(this);
//設定右面的側滑菜單隻能通過程式設計來開啟
drawer_layout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED,
Gravity.END);
drawer_layout.setDrawerListener(new DrawerLayout.DrawerListener() {
@Override
public void onDrawerSlide(View view, float v) {
}
@Override
public void onDrawerOpened(View view) {
}
@Override
public void onDrawerClosed(View view) {
drawer_layout.setDrawerLockMode(
DrawerLayout.LOCK_MODE_LOCKED_CLOSED, Gravity.END);
}
@Override
public void onDrawerStateChanged(int i) {
}
});
fg_right_menu.setDrawerLayout(drawer_layout);
fg_left_menu.setDrawerLayout(drawer_layout);
}
@Override
public void onClick(View v) {
drawer_layout.openDrawer(Gravity.RIGHT);
drawer_layout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED,
Gravity.END); //解除鎖定
}
}
1. drawer_layout.openDrawer(Gravity.END);
這句是設定開啟的哪個選單START代表左邊，END代表右邊
2. drawer_layout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED,Gravity.END); 鎖定右面的側滑選單，不能通過手勢關閉或者開啟，只能通過程式碼開啟！即呼叫openDrawer方法！ 接著 drawer_layout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED,Gravity.END); 解除鎖定狀態，即可以通過手勢關閉側滑選單 最後在drawer關閉的時候呼叫： drawer_layout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, Gravity.END); 再次鎖定右邊的側滑選單！
3. 佈局程式碼中的Tag屬性的作用？ 答：這裡沒用到，在重寫DrawerListener的onDrawerSlide方法時，我們可以通過他的第一個 引數drawerView，呼叫drawerView.getTag().equals("START")判斷觸發選單事件的是哪個 選單！然後可以進行對應的操作！