我做了一个导航抽屉，就像developer.android.com网站上的教程中显示的那样。但是现在，我想使用一个导航抽屉，我在NavigationDrawer.class中创建了多个活动在我的应用程序。
我的问题是，这里是否有人可以做一个小教程，它解释了如何使用一个导航抽屉的多个活动。
我第一次读到这个答案
Android导航抽屉在多个活动
但在我的项目上行不通
public class NavigationDrawer extends Activity {
public DrawerLayout drawerLayout;
public ListView drawerList;
private ActionBarDrawerToggle drawerToggle;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerToggle = new ActionBarDrawerToggle((Activity) this, drawerLayout, R.drawable.ic_drawer, 0, 0) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(R.string.app_name);
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(R.string.menu);
}
};
drawerLayout.setDrawerListener(drawerToggle);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
listItems = getResources().getStringArray(R.array.layers_array);
drawerList = (ListView) findViewById(R.id.left_drawer);
drawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, android.R.id.text,
listItems));
drawerList.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int pos, long arg3) {
drawerClickEvent(pos);
}
});
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (drawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
drawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
}
在这个活动中，我想有导航抽屉，所以我扩展了'NavigationDrawer'，在其他一些活动中，我想使用相同的导航抽屉
public class SampleActivity extends NavigationDrawer {...}
package xxxxxx;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.widget.SearchView;
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.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;
public class loginhome extends AppCompatActivity {
private Toolbar toolbar;
private NavigationView navigationView;
private DrawerLayout drawerLayout;
// Make sure to be using android.support.v7.app.ActionBarDrawerToggle version.
// The android.support.v4.app.ActionBarDrawerToggle has been deprecated.
private ActionBarDrawerToggle drawerToggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.loginhome);
// Initializing Toolbar and setting it as the actionbar
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
//Initializing NavigationView
navigationView = (NavigationView) findViewById(R.id.nav_view);
//Setting Navigation View Item Selected Listener to handle the item click of the navigation menu
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
// This method will trigger on item Click of navigation menu
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);
//Closing drawer on item click
drawerLayout.closeDrawers();
//Check to see which item was being clicked and perform appropriate action
switch (menuItem.getItemId()){
//Replacing the main content with ContentFragment Which is our Inbox View;
case R.id.nav_first_fragment:
Toast.makeText(getApplicationContext(),"First fragment",Toast.LENGTH_SHORT).show();
FirstFragment fragment = new FirstFragment();
android.support.v4.app.FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame,fragment);
fragmentTransaction.commit();
return true;
// For rest of the options we just show a toast on click
case R.id.nav_second_fragment:
Toast.makeText(getApplicationContext(),"Second fragment",Toast.LENGTH_SHORT).show();
SecondFragment fragment2 = new SecondFragment();
android.support.v4.app.FragmentTransaction fragmentTransaction2 = getSupportFragmentManager().beginTransaction();
fragmentTransaction2.replace(R.id.frame,fragment2);
fragmentTransaction2.commit();
return true;
default:
Toast.makeText(getApplicationContext(),"Somethings Wrong",Toast.LENGTH_SHORT).show();
return true;
}
}
});
// Initializing Drawer Layout and ActionBarToggle
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.drawer_open, R.string.drawer_close){
@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 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);
}
};
//Setting the actionbarToggle to drawer layout
drawerLayout.setDrawerListener(actionBarDrawerToggle);
//calling sync state is necessay or else your hamburger icon wont show up
actionBarDrawerToggle.syncState();
}
在toolbar.xml中使用它
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:elevation="4dp"
android:id="@+id/toolbar"
android:theme="@style/ThemeOverlay.AppCompat.Dark"
>
</android.support.v7.widget.Toolbar>
如果想要使用，可以使用这个导航头
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="192dp"
android:background="?attr/colorPrimaryDark"
android:padding="16dp"
android:theme="@style/ThemeOverlay.AppCompat.Dark"
android:orientation="vertical"
android:gravity="bottom">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="56dp"
android:id="@+id/navhead"
android:orientation="vertical"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:textColor="#ffffff"
android:text="tanya"
android:textSize="14sp"
android:textStyle="bold"
/>
<TextView
android:id="@+id/email"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:layout_marginLeft="16dp"
android:layout_marginTop="5dp"
android:text="tanya.com"
android:textSize="14sp"
android:textStyle="normal"
/>
</LinearLayout>
<de.hdodenhof.circleimageview.CircleImageView
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_below="@+id/imageView"
android:layout_marginTop="15dp"
android:src="@drawable/face"
android:id="@+id/circleView"
/>
</RelativeLayout>
我在Kotlin是这样做的:
open class BaseAppCompatActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener {
protected lateinit var drawerLayout: DrawerLayout
protected lateinit var navigationView: NavigationView
@Inject
lateinit var loginService: LoginService
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
Log.d("BaseAppCompatActivity", "onCreate()")
App.getComponent().inject(this)
drawerLayout = findViewById(R.id.drawer_layout) as DrawerLayout
val toolbar = findViewById(R.id.toolbar) as Toolbar
setSupportActionBar(toolbar)
navigationView = findViewById(R.id.nav_view) as NavigationView
navigationView.setNavigationItemSelectedListener(this)
val toggle = ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close)
drawerLayout.addDrawerListener(toggle)
toggle.syncState()
toggle.isDrawerIndicatorEnabled = true
val navigationViewHeaderView = navigationView.getHeaderView(0)
navigationViewHeaderView.login_txt.text = SharedKey.username
}
private inline fun <reified T: Activity> launch():Boolean{
if(this is T) return closeDrawer()
val intent = Intent(applicationContext, T::class.java)
startActivity(intent)
finish()
return true
}
private fun closeDrawer(): Boolean {
drawerLayout.closeDrawer(GravityCompat.START)
return true
}
override fun onNavigationItemSelected(item: MenuItem): Boolean {
val id = item.itemId
when (id) {
R.id.action_tasks -> {
return launch<TasksActivity>()
}
R.id.action_contacts -> {
return launch<ContactActivity>()
}
R.id.action_logout -> {
createExitDialog(loginService, this)
}
}
return false
}
}
抽屉的活动必须继承这个BaseAppCompatActivity，调用super。onCreate在内容设置后(实际上，可以移动到一些init方法)，并在布局中有对应的id元素
