侧滑菜单DrawerLayout

Posted 2020-10-17 沈晖然

侧滑菜单。。。。。。。。。。。。。。

布局：
<android.support.v4.widget.DrawerLayout
    android:id="@+id/drawer"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context="com.example.shenhuiran_1205.MainActivity">
    <!--主页面的内容 ctrl+alt+l 格式化代码-->
    <RelativeLayout
        android:layout_height="match_parent"
        android:layout_width="match_parent">
    <Button
        android:id="@+id/btnOpen"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:text="Hello!"/>
    <!--用来放置 碎片的容器 -->
    <FrameLayout android:id="@+id/frcontent"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:layout_below="@+id/btnOpen">
    </FrameLayout>
    </RelativeLayout>
        <!---菜单内容 android:layout_gravity="start":菜单在左边 end 菜单在右边 侧滑菜单一般不要超过 320dp -->
    <RelativeLayout android:id="@+id/menu"
            android:layout_height="match_parent"
            android:layout_width="170dp"
            android:background="#f00"
            android:layout_gravity="start">
        <ImageView android:id="@+id/img"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:src="@mipmap/ic_launcher"/>
        <ListView android:id="@+id/lv"
            android:layout_height="match_parent"
            android:layout_width="match_parent"
            android:layout_below="@+id/img"/>
    </RelativeLayout>
</android.support.v4.widget.DrawerLayout>

===================================================================
主要代码：

import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private List<String> data=new ArrayList<>();
    private DrawerLayout drawerLayout;
    private RelativeLayout menu;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        drawerLayout = findViewById(R.id.drawer);
        menu = findViewById(R.id.menu);
        Button b=findViewById(R.id.btnOpen);
        b.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                drawerLayout.openDrawer(menu);//打开菜单
            }
        });
        ListView listView=findViewById(R.id.lv);
        for(int i=0;i<20;i++){
            data.add("item"+i);
        }
        ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,data);
        listView.setAdapter(adapter);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                //关闭菜单
                drawerLayout.closeDrawer(menu);
                //动态添加fragment
                getSupportFragmentManager().beginTransaction().replace(R.id.frcontent,new MyFragment()).commit();
            }
        });
        //添加监听事件
        drawerLayout.setDrawerListener(new DrawerLayout.DrawerListener() {
            @Override
            public void onDrawerSlide(View drawerView, float slideOffset) {
                Log.d("zzz","--"+slideOffset);
            }
            //
            @Override
            public void onDrawerOpened(View drawerView) {
                Toast.makeText(MainActivity.this,"打开了！",Toast.LENGTH_SHORT).show();
            }
            @Override
            public void onDrawerClosed(View drawerView) {
                Toast.makeText(MainActivity.this,"关闭了！",Toast.LENGTH_SHORT).show();
            }
            /**
             * 当抽屉滑动状态改变的时候被调用
             * 状态值是STATE_IDLE（闲置--0）, STATE_DRAGGING（拖拽的--1）, STATE_SETTLING（固定--2）中之一。
             * 抽屉打开的时候，点击抽屉，drawer的状态就会变成STATE_DRAGGING，然后变成STATE_IDLE
             */
            @Override
            public void onDrawerStateChanged(int newState) {
            }
        });
    }
}
=========================================================================

Fragment 类

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
 * Created by jane on 2017/12/8.
 */
public class MyFragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fitem,container,false);
    }
}
====================================================================

fitem.xml布局文件

<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent"
    android:layout_height="match_parent">

</android.support.constraint.ConstraintLayout>