DrawerLayout在屏幕上按住（保持）时显示一点点

Question

我使用DrawerLayout作为RecyclerView菜单，因为我需要以编程方式控制和更新菜单。

我希望只通过滑动和按钮点击打开/关闭菜单但问题是，当我按住主要布局中的任何内容时，抽屉显示一点点，我点击按钮将失败。但是，当您快速按下时，点击工作正常。

顺便说一下，我不是Android用户。这是系统或Android默认行为还是其他什么行为？

如果我不清楚，这是演示

这是我布局的伪代码

<android.support.v4.widget.DrawerLayout
    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"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <android.support.v7.widget.RecyclerView
        ...
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layoutManager="LinearLayoutManager"
        ... />


    <android.support.v7.widget.RecyclerView
        ...
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        .../>

</android.support.v4.widget.DrawerLayout>

Answer 1

在布局标签的布局xml中添加可点击且可聚焦的属性

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.project.wordsdict.main.views.AboutActivity"
    android:focusable="true"
    android:clickable="true">

然后在onCreate方法的活动中，通过id

找到你的布局

    ConstraintLayout mLayout = findViewById(R.id.yourLayoutId);
    mLayout.setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View view) {

                 mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKE‌​D_CLOSED);
                    return true;
                }
            });

mLayout.setOnTouchListener(new View.OnTouchListener() {        
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        switch(event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                return false;
            case MotionEvent.ACTION_UP:
                mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOC‌​KED);
                return true; 
        }
        return false;
    }
});

P.S使用您正在使用的任何布局。希望它的确有效，因为它确实是DrawerLayout的错误

Answer 2

您可以拥有一个包含该菜单的活动，然后进行需要使用该菜单的其他活动来实现该活动。

例如。

BaseActivity - 包含菜单：

import android.app.ActivityOptions;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;

public class BaseActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    public static DrawerLayout drawer;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayShowTitleEnabled(false);

        drawer = findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);

        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);

    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks
        int id = item.getItemId();

        switch (id) {
           .......
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
        // Handle navigation view item clicks
        Intent intent;
        int id = item.getItemId();
        ActivityOptions options =
                ActivityOptions.makeCustomAnimation(getApplicationContext(), R.anim.enter, R.anim.exit);
        switch (id) {
           ..............

        }

        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }

}

使用Recycler视图的活动：

public class YourActivity extends BaseActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    LayoutInflater inflater = (LayoutInflater) this
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View contentView = inflater.inflate(R.layout.your_layout, null, false);
    BaseActivity.drawer.addView(contentView, 0);
    getSupportActionBar().setDisplayShowTitleEnabled(true);

    // Lookup the recycler view in activity layout
    RecyclerView recyclerView = findViewById(R.id.recyclerView);

    // Initialize arrayList
    ArrayList<....> arrayList= new ArrayList<>();

    // Create adapter
    YourAdapter adapter = new CategoryAdapter(...);

    // Attach the adapter to the recycler view
    recyclerView.setAdapter(adapter);

    //Populate the recycler view
    adapter.addData();

    // Set layout manager to position the items
    recyclerView.setLayoutManager(new GridLayoutManager(this, 2,
            GridLayoutManager.VERTICAL, false));

}

your_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginStart="20dp"
    android:layout_column="2">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</GridLayout>

Answer 3

好的，我最后通过为DrawerLayout创建子类并覆盖onInterceptTouchEvent方法来完成它。这个想法是当按下时，强制关闭菜单。否则解锁它。

这是现在替换我的xml文件中的原始drawerlayout的子类。

public class CustomDrawer extends DrawerLayout {
    public CustomDrawer(Context context) {
        super(context);
    }

    public CustomDrawer(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public CustomDrawer(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
        } else {
            setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
        }
        return super.onInterceptTouchEvent(event);
    }

}

布局伪代码

<...CustomDrawer
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    ...
    ...
</...CustomDrawer>