Question

我是编程新手，我想使用导航抽屉FloatingActionButton。我可以单独制作这两个，但我不能在一个项目中完成。我真的不想要第三方图书馆。

编辑：

我想使用导航抽屉和FloatingActionButton来打开不同的片段。默认情况下，这是导航抽屉，我需要向FloatingActionB

添加操作

MainActivity.Java

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
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;

public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });

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

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) 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 here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.nav_camera) {
            // Handle the camera action
        } else if (id == R.id.nav_gallery) {

        } else if (id == R.id.nav_slideshow) {

        } else if (id == R.id.nav_manage) {

        } else if (id == R.id.nav_share) {

        } else if (id == R.id.nav_send) {

        }

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

app_bar_main.xml（有浮动按钮）

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:theme="@style/AppTheme.AppBarOverlay">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:popupTheme="@style/AppTheme.PopupOverlay" />

</android.support.design.widget.AppBarLayout>

<include layout="@layout/content_main" />

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="160dp"
    android:layout_gravity="bottom|end"
    android:layout_marginRight="@dimen/fab_margin"
    android:visibility="invisible"
    app:backgroundTint="@color/colorPrimaryDark"
    app:elevation="6dp"
    app:pressedTranslationZ="12dp"
    app:srcCompat="@android:drawable/btn_radio" />
<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="90dp"
    android:layout_gravity="bottom|end"
    android:layout_marginRight="@dimen/fab_margin"
    android:visibility="invisible"
    app:elevation="6dp"
    app:backgroundTint="@color/colorPrimary"
    app:pressedTranslationZ="12dp"
    app:srcCompat="@android:drawable/ic_menu_manage" />
<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    app:elevation="6dp"
    app:backgroundTint="@color/colorAccent"
    app:pressedTranslationZ="12dp"
    android:layout_margin="@dimen/fab_margin"
    app:srcCompat="@android:drawable/ic_menu_add" />

Answer 1

试试这个

将其添加到现有代码中：

在onCreate（）之外的类中添加此代码。

@Override
public void onDrawerSlide(View drawerView, float offset){
   fabButton.setAlpha(offset);
}

如果您不想切换到不同的FAB实施。使用onDrawerSlide(View drawerView, float offset)并在打开抽屉时更改FAB alpha。您也可以在onDrawerClose() or onDrawerOpen()方法中切换其可见性。

fab按钮编程就是这个。这是设置图像和代码的代码。 FAB的位置和其他属性。

fabButton = new FloatingActionButton.Builder(this)
            .withDrawable(getResources().getDrawable(R.drawable.ic_action_edit))
            .withButtonColor(0xFF2196F3)
            .withGravity(Gravity.BOTTOM | Gravity.END)
            .withMargins(0, 0, 16, 16)
            .create();

试着希望它可以帮助你。

Answer 2

Here's您应用中的材料设计实施指南。

尽管如此，我建议您制作新的Navigation drawer活动。转到

File>New>Activity>Navigation Drawer Activity.

此activity已经附带了FAB和Navigation Drawer，并且已经覆盖了onOptionsItemSelected（），onNavigationItemSelected（）等方法。所以你需要的只是将您的布局放在content_main文件中。

Answer 3

尝试在DrawerLayout中包含协调器布局：

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

   <android.support.design.widget.CoordinatorLayout
     android:layout_height="match_parent"
     android:layout_width="match_parent">
   </android.support.design.widget.CoordinatorLayout>

   <android.support.design.widget.NavigationView
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      android:layout_height="match_parent
      android:layout_width="wrap_content"
      android:id="@+id/mNavigationView"
      android:layout_gravity="start"
      app:menu="@menu/navigation_menu"/>

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

然后在单独实施

时在协调器布局中执行任何操作

Answer 4

我使用此代码显示来自FAB浮动操作按钮的导航

final DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.menu_button);

    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (drawer.isDrawerOpen(GravityCompat.START)) {
                drawer.closeDrawer(GravityCompat.START);
            } else {
                drawer.openDrawer(GravityCompat.START);
            }
        }
    });

如果您想使用Kotlin，则类似于以下代码

var drawer = findViewById<DrawerLayout>(R.id.drawer_layout)
    val fab = findViewById<FloatingActionButton>(R.id.menu_button)
    fab.setOnClickListener {
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            drawer.openDrawer(GravityCompat.START);
        }
    }

这是我的布局，您可以使用上面的Java或Kotlin代码之一，并且对我有效。

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout 
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:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/transparent"
tools:openDrawer="start">

    <include
        layout="@layout/nav_host_map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/bottom_nav_view"/>

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header"
        app:menu="@menu/drawer_menu_left" />
</androidx.drawerlayout.widget.DrawerLayout>

如何使用带导航抽屉的浮动动作按钮？

4 个答案: