我正在尝试让一个
我按照这个教程的步骤操作，对于一个从左往右滑动的
当我将
以下是修改后的切换函数。
DrawerLayout从右向左滑动。我按照这个教程的步骤操作，对于一个从左往右滑动的
DrawerLayout非常满意和清晰。当我将
android.support.design.widget.NavigationView的gravity更改为right时，它会从右向左滑动，但是汉堡菜单按钮不再正常工作，当我试图点击它时，它会显示“找不到重力为LEFT的抽屉视图”。以下是修改后的切换函数。
// 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 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);
}
//Added the lines below, tried solutions online but fail..
@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;
}
};
那么，如何使汉堡按钮再次工作？
更新
这是主布局的XML文件
<?xml version="1.0" encoding="utf-8"?>
<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=".Activities.NewsfeedActivity">
<LinearLayout
android:id="@+id/activity_newsfeed_wrapper"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical" >
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/activity_newsfeed_toolbar"
android:layout_width="match_parent"
android:layout_height="@dimen/abc_action_bar_default_height_material"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<FrameLayout
android:id="@+id/activity_newsfeed_frame"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="@+id/activity_newsfeed_navigationView"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:layout_gravity="right"
app:headerLayout="@layout/drawer_header"
app:menu="@menu/drawer" />
</android.support.v4.widget.DrawerLayout>
这是我的主类
public class NewsfeedActivity extends AppCompatActivity {
//Defining Variables
private Toolbar toolbar;
private NavigationView navigationView;
private DrawerLayout drawerLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_newsfeed);
// Initializing Toolbar and setting it as the actionbar
toolbar = (Toolbar) findViewById(R.id.activity_newsfeed_toolbar);
setSupportActionBar(toolbar);
//Initializing NavigationView
navigationView = (NavigationView) findViewById(R.id.activity_newsfeed_navigationView);
//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
@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);
//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.a:
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.activity_newsfeed_frame,fragment);
fragmentTransaction.commit();
return true;
// For rest of the options we just show a toast on click
case R.id.b:
Toast.makeText(getApplicationContext(),"b Selected",Toast.LENGTH_SHORT).show();
return true;
case R.id.c:
Toast.makeText(getApplicationContext(),"c Selected",Toast.LENGTH_SHORT).show();
return true;
case R.id.d:
Toast.makeText(getApplicationContext(),"d Selected",Toast.LENGTH_SHORT).show();
return true;
case R.id.e:
Toast.makeText(getApplicationContext(),"e Selected",Toast.LENGTH_SHORT).show();
return true;
case R.id.f:
Toast.makeText(getApplicationContext(),"f Selected",Toast.LENGTH_SHORT).show();
return true;
case R.id.g:
Toast.makeText(getApplicationContext(),"g Selected",Toast.LENGTH_SHORT).show();
return true;
case R.id.h:
Toast.makeText(getApplicationContext(),"h Selected",Toast.LENGTH_SHORT).show();
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);
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 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();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.drawer, 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.
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);
}
}
更新02/02/2016
尝试将抽屉视图更改为RIGHT..但这是个坏主意，因为什么也不会改变。尝试将NavigationView移动到LinearLayout中，情况甚至更糟，因为没有滑动菜单。
尝试在onOptionsItemSelected中更改内容。
case android.R.id.home:
if (drawerLayout.isDrawerOpen(GravityCompat.END)) {
drawerLayout.closeDrawer(GravityCompat.END);
} else {
drawerLayout.openDrawer(GravityCompat.END);
}
将Gravity.RIGHT更改为GravityCompat.END，代码说：“不行”。