我在工具栏和抽屉上挣扎。当我向后堆栈添加新片段时,我正在尝试让汉堡切换到箭头,但没有办法做到这一点。
也许我错过了一些东西,但我找不到方法。有人有同样的问题吗?
这是声明:
mDrawerToggle = new ActionBarDrawerToggle(
getActivityCompat(), /* host Activity */
mDrawerLayout, /* DrawerLayout object */
((BaseActivity) getActivityCompat()).getToolbar(),
R.string.navigation_drawer_open, /* "open drawer" description for accessibility */
R.string.navigation_drawer_close /* "close drawer" description for accessibility */
)
这是我在将片段添加到后堆栈时调用的函数
public void setToggleState(boolean isEnabled) {
if (mDrawerLayout == null)
return;
if (isEnabled) {
mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
mDrawerToggle.onDrawerStateChanged(DrawerLayout.LOCK_MODE_UNLOCKED);
} else {
mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
mDrawerToggle.onDrawerStateChanged(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
}
mDrawerToggle.syncState();
}
我认为您所要做的就是删除第三个参数。因此:
mDrawerToggle = new ActionBarDrawerToggle(
getActivityCompat(), /* host Activity */
mDrawerLayout, /* DrawerLayout object */
// ((BaseActivity) getActivityCompat()).getToolbar(), <== delete this argument
R.string.navigation_drawer_open, /* "open drawer" description for accessibility */
R.string.navigation_drawer_close /* "close drawer" description for accessibility */
);
愿它有帮助。
我遇到了同样的问题。我的解决方案是这样的:
确保您的活动实现了 onBackStackChangedListener。在您的活动中,我设置了后退堆栈侦听器,并设置了工具栏
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mFm = getFragmentManager();
mFm.addOnBackStackChangedListener(this);
// Setup toolbar
mToolbar = (Toolbar) findViewById(R.id.toolbar);
mToolbar.setVisibility(View.VISIBLE);
setSupportActionBar(mToolbar);
// Setup drawer toggle
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerlayout);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, mToolbar, R.string.menu_open, R.string.menu_close);
mDrawerLayout.setDrawerListener(mDrawerToggle);
getSupportActionBar().setHomeButtonEnabled(true);
mDrawerToggle.syncState();
// Setup initial fragment
if (savedInstanceState == null) {
mCurrentFragment = DashboardFragment.newInstance();
mFm.beginTransaction().add(CONTAINER_ID, mCurrentFragment).commit();
}
}
还要记住设置:
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
现在神奇的事情发生在onBackStackChanged((中。对于最顶层的片段,将 setDrawerIndicatorEnabled 设置为 true,对于该片段,将 setDisplayHomeAsUpEnabled 设置为 false。其他的则相反。我还必须调用syncState,否则汉堡包不会再次出现:
@Override
public void onBackStackChanged() {
mDrawerToggle.setDrawerIndicatorEnabled(mFm.getBackStackEntryCount() == 0);
getSupportActionBar().setDisplayHomeAsUpEnabled(mFm.getBackStackEntryCount() > 0);
mDrawerToggle.syncState();
}
我使用以下布局实现了它:我用过动作栏抽屉切换v7抽屉.xml
<RelativeLayout 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"
android:orientation="vertical"
tools:context="com.example.toolbar.Drawer" >
<include
android:id="@+id/tool1"
layout="@layout/toolbar" />
<android.support.v4.widget.DrawerLayout
android:id="@+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@id/tool1" >
<FrameLayout
android:id="@+id/mainContent"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
<!-- Nav drawer -->
<ListView
android:id="@+id/drawerList"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:background="@android:color/white"
android:divider="@android:color/white"
android:dividerHeight="8dp"
android:drawSelectorOnTop="true"
android:headerDividersEnabled="true" />
</android.support.v4.widget.DrawerLayout>
</RelativeLayout>
工具栏.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app1="http://schemas.android.com/apk/res/com.example.toolbar"
android:id="@+id/my_awesome_toolbar"
android:layout_width="fill_parent"
android:layout_height="75dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
app1:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app1:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" >
</android.support.v7.widget.Toolbar>
抽屉.java
打包组合示例工具栏;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.Toolbar;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class Drawer extends ActionBarActivity {
ActionBarDrawerToggle mDrawerToggle;
private String[] days;
ArrayAdapter<String> adapter;
private ListView mDrawerList;
DrawerLayout mDrawerLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.drawer);
days = new String[] { "sunday", "monday", "tuesday", "wednesday",
"thursday", "friday", "saturday" };
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, days);
mDrawerList = (ListView) findViewById(R.id.drawerList);
mDrawerList.setAdapter(adapter);
mDrawerList.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
Fragment fragment = new MyFragment();
Bundle args = new Bundle();
args.putString(MyFragment.ARG_PLANET_NUMBER, days[position]);
// args.putInt(MyFragment.ARG_PLANET_NUMBER, position);
fragment.setArguments(args);
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.mainContent, fragment).commit();
}
});
Toolbar toolbar = (Toolbar) findViewById(R.id.tool1);
setSupportActionBar(toolbar);
toolbar.setTitle("ToolBar Demo");
toolbar.setLogo(R.drawable.ic_launcher);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar,
R.string.open_navigation_drawer,
R.string.close_navigation_drawer) {
@Override
public void onDrawerSlide(View drawerView, float slideOffset) {
// TODO Auto-generated method stub
super.onDrawerSlide(drawerView, slideOffset);
}
/** Called when a drawer has settled in a completely closed state. */
@Override
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
getSupportActionBar().setTitle("hello");
}
/** Called when a drawer has settled in a completely open state. */
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
getSupportActionBar().setTitle("hi");
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
// getSupportActionBar().setDisplayHomeAsUpEnabled(true); //<---- added
// getSupportActionBar().setHomeButtonEnabled(true); //<---- added
}
@Override
public boolean onOptionsItemSelected(MenuItem item) { // <---- added
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) { // <---- added
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState(); // important statetment for drawer to
// identify
// its state
}
@Override
public void onConfigurationChanged(Configuration newConfig) { // <---- added
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public void onBackPressed() {
if (mDrawerLayout.isDrawerOpen(Gravity.START | Gravity.LEFT)) { // <----
// added
mDrawerLayout.closeDrawers();
return;
}
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;
}
}
答案在大多数情况下都是正确的。
但实际上,使用工具栏作为ActionBarDrawerToggle(...)
构造函数的参数并没有错。
当然,如果您使用的是Toolbar
AppCompatActivity
提供的股票,例如股票Theme.AppCompat.Light
根主题,那么这样做是没有意义的。即使您希望在布局中使用自定义Toolbar
,例如,如果您正在实现 Material Design 的状态栏下方的工具栏上方导航抽屉模式,您仍然可以调用setSupportActionBar(toolbar)
,并且仍然不会将工具栏传递给ActionBarDrawerToggle()
让活动处理导航图标。
但是,如果您真的想将ActionBarDrawerToggle
绑定到不是活动操作栏的Toolbar
,并且可能具有不同的样式和不同的图标或其他内容 - 还有一段路要走。
问题是,当您不将工具栏作为第四个参数传递时,活动应该提供导航图标(箭头( - 并且AppCompatActivity
返回homeAsUpIndicator
属性的值 - 它在任一标准 AppCompat 主题中定义。
但是,当您显式传递 Toolbar
时,ActionBarDrawerToggle
期望工具栏实例提供导航指示器可绘制对象 - 但事实并非如此,因为即使您像这样对其应用适当的样式:
<android.support.v7.widget.Toolbar
...
app:theme="?actionBarTheme"
style="@style/Widget.AppCompat.Toolbar">
出于某种原因(甚至可能是一个错误(,Widget.AppCompat.Toolbar
样式没有navigationIcon
属性,因此当ActionBarDrawerToggle
要求它提供导航图标时,Toolbar
返回null
。因此,为了解决这个问题,您只需从样式派生并添加属性:
<android.support.v7.widget.Toolbar
...
app:theme="?actionBarTheme"
style="@style/MyWidget.Toolbar">
<!-- styles.xml -->
<style name="MyWidget.Toolbar" parent="Widget.AppCompat.Toolbar">
<item name="navigationIcon">?homeAsUpIndicator</item>
</style>
现在,您可以使用工具栏感知构造函数ActionBarDrawerToggle(this, mDrawerLayout, mToolbar, 0, 0)
并且仍然具有导航图标。
此行可确保单击时将汉堡图标更改为箭头。确保在代码中编写了此内容。
mDrawerLayout.setDrawerListener(mDrawerToggle);