如何实现从右侧打开抽屉菜单

Question

我在this tutorial 之后创建了一个导航抽屉

但我需要的是，我需要从右侧打开相同的抽屉菜单。有人知道如何实现吗？

下面是我的xml

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity">

<LinearLayout
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:orientation="vertical"
    >
    <include
        android:id="@+id/toolbar"
        layout="@layout/tool_bar"
    />
    <FrameLayout
        android:id="@+id/frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </FrameLayout>

</LinearLayout>
<android.support.design.widget.NavigationView
    android:id="@+id/navigation_view"
    android:layout_height="match_parent"
    android:layout_width="wrap_content"
    android:layout_gravity="right"
    app:headerLayout="@layout/header"
    app:menu="@menu/drawer"
    />

在代码中

  // Initializing Drawer Layout and ActionBarToggle
    drawerLayout = (DrawerLayout) findViewById(R.id.drawer);
    ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.openDrawer, R.string.closeDrawer){

        @Override
        public void onDrawerClosed(View drawerView) {
            // Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank
            super.onDrawerClosed(drawerView);
        }

        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            if (item != null && item.getItemId() == android.R.id.home) {
                if (drawerLayout.isDrawerOpen(Gravity.RIGHT)) {
                    drawerLayout.closeDrawer(Gravity.RIGHT);
                } else {
                    drawerLayout.openDrawer(Gravity.RIGHT);
                }
            }
            return false;
        }

        @Override
        public void onDrawerOpened(View drawerView) {
            // Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank

            super.onDrawerOpened(drawerView);
        }

    };

Answer 1

在导航视图中试试这个

android:layout_gravity="end" 代替 android:layout_gravity="start"

 <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_height="match_parent"
        android:layout_width="wrap_content"
        android:layout_gravity="end"
        app:headerLayout="@layout/header"
        app:menu="@menu/drawer"
        />

//在你的java活动文件中添加这些行，它会工作

 @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {
            case android.R.id.home:
                if (mDrawer.isDrawerOpen(Gravity.RIGHT)) {
                    mDrawer.closeDrawer(Gravity.RIGHT);
                } else {
                    mDrawer.openDrawer(Gravity.RIGHT);
                }
                return true;
            case R.id.action_settings:
                return true;
        }

最终更新：

我在您的示例项目（MainActivity.java）中更改了一些行，现在它正在工作，请使用此代码。

不要忘记在您的 xml 文件中写 android:layout_gravity="end" 代替 android:layout_gravity="start"。

package com.android4dev.navigationview;


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


public class MainActivity extends AppCompatActivity {

    Toolbar toolbar;
    NavigationView navigationView;
    DrawerLayout drawerLayout;

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

        toolbar=(Toolbar)findViewById(R.id.toolbar);
        navigationView=(NavigationView)findViewById(R.id.navigation_view);
        drawerLayout=(DrawerLayout)findViewById(R.id.drawer);


        // Set a Toolbar to replace the ActionBar.
        setToolbarAsActionBar();
        // Setup drawer view
        setupDrawerContent(navigationView);

        // Set the menu icon instead of the launcher icon.
        final ActionBar ab = getSupportActionBar();
        ab.setHomeAsUpIndicator(R.drawable.ic_menu);
        ab.setDisplayHomeAsUpEnabled(true);
        //ab.setDisplayShowTitleEnabled(false);

        Menu menu = navigationView.getMenu();
        MenuItem item = menu.findItem(R.id.starred);
        selectDrawerItem(item);

    }

    private void setToolbarAsActionBar() {
        setSupportActionBar(toolbar);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {
            case android.R.id.home:
                if (drawerLayout.isDrawerOpen(Gravity.RIGHT)) {
                    drawerLayout.closeDrawer(Gravity.RIGHT);
                } else {
                    drawerLayout.openDrawer(Gravity.RIGHT);
                }
                return true;
            case R.id.action_settings:
                return true;
        }
        return super.onOptionsItemSelected(item);
    }

    private void setupDrawerContent(NavigationView navigationView) {

        navigationView.setNavigationItemSelectedListener(
                new NavigationView.OnNavigationItemSelectedListener() {
                    @Override
                    public boolean onNavigationItemSelected(MenuItem menuItem) {

                        //Checking if the item is in checked state or not, if not make it in checked state
                        if (menuItem.isChecked()) menuItem.setChecked(false);
                        else menuItem.setChecked(true);

                        selectDrawerItem(menuItem);
                        return true;
                    }
                });
    }

    public void selectDrawerItem(MenuItem menuItem) {
        // Create a new fragment and specify the planet to show based on
        // position

        switch (menuItem.getItemId()) {

            case R.id.inbox:
                Toast.makeText(getApplicationContext(), "Inbox Selected", Toast.LENGTH_SHORT).show();
                ContentFragment fragment = new ContentFragment();
                android.support.v4.app.FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
                fragmentTransaction.replace(R.id.frame, fragment);
                fragmentTransaction.commit();
                break;

            case R.id.starred:
                Toast.makeText(getApplicationContext(), "Stared Selected", Toast.LENGTH_SHORT).show();
                break;

            case R.id.sent_mail:
                Toast.makeText(getApplicationContext(), "Send Selected", Toast.LENGTH_SHORT).show();
                break;

            case R.id.drafts:
                Toast.makeText(getApplicationContext(), "Drafts Selected", Toast.LENGTH_SHORT).show();
                break;

            case R.id.allmail:
                Toast.makeText(getApplicationContext(), "All Mail Selected", Toast.LENGTH_SHORT).show();
                break;

            case R.id.trash:
                Toast.makeText(getApplicationContext(), "Trash Selected", Toast.LENGTH_SHORT).show();
                break;

            case R.id.spam:
                Toast.makeText(getApplicationContext(), "Spam Selected", Toast.LENGTH_SHORT).show();
                break;

            default:
                Toast.makeText(getApplicationContext(), "Somethings Wrong", Toast.LENGTH_SHORT).show();
                break;

        }

        drawerLayout.closeDrawers();
    }

    private ActionBarDrawerToggle setupDrawerToggle() {
        return new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.openDrawer, R.string.closeDrawer);
    }

}

Answer 2

这是可能的。您必须在导航抽屉中设置 android:layout_gravity="right" 并更改重力：

mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
            R.drawable.ic_drawer, R.string.drawer_open,
            R.string.drawer_close) {

        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            if (item != null && item.getItemId() == android.R.id.home) {
                if (mDrawerLayout.isDrawerOpen(Gravity.RIGHT)) {
                    mDrawerLayout.closeDrawer(Gravity.RIGHT);
                } else {
                    mDrawerLayout.openDrawer(Gravity.RIGHT);
                }
            }
            return false;
        }
    };

应该可以！

Answer 3

实现左侧导航抽屉后，更改以下属性。

DrawerLayout 中的工具：openDrawer="start"

导航视图中的android:layout_gravity="end"

toolbar.setNavigationIcon (R.color.transparent);
mDrawerToggle.setDrawerIndicatorEnabled (false);

toolbar.setNavigationOnClickListener (new View.OnClickListener () { 
    @Override public void onClick(View view) { 
        if (mDrawerLayout.isDrawerOpen (Gravity.END)) {
            mDrawerLayout.closeDrawer (Gravity.END); 
        } else { 
            mDrawerLayout.openDrawer (Gravity.END); 
        } 
    } 
 });

Answer 4

试试这个对我有用

@Override
        public boolean onOptionsItemSelected(MenuItem item) {

            switch (item.getItemId()) {
                case android.R.id.home:
                    if (drawer.isDrawerOpen(Gravity.RIGHT)) {
                        drawer.closeDrawer(Gravity.RIGHT);
                    } else {
                        drawer.openDrawer(Gravity.RIGHT);
                    }
                    return true;
                case R.id.action_settings:
                    // do what you want
                    return true;
            }
            return false;
        }