【发布时间】：2014-11-28 11:03:53
【问题描述】：
我目前在我的应用程序中使用 android.support.v7.widget.Toolbar 和 android.support.v4.widget.DrawerLayout。一切正常，但有一点我想改变它的行为。
当我打开抽屉时，整个抽屉占据了space of the Toolbar。工具栏最好保持在顶部，就像在 Google Music app 中一样。我怎样才能做到这一点？
但最重要的不是前者。 At first, the icon which is loaded in the application is the three stripped one。我意识到打开抽屉后，图标变成了一个箭头。加载片段后，箭头仍作为工具栏图标保留在那里，即使我按下回直到第一个屏幕。如何避免打开抽屉后出现箭头？我想手动更改此图标，特别是在我加载较低级别的片段时。
感谢您的帮助！
代码：
public class HomeActivity extends BaseActivity {
...
private DrawerLayout mDrawer;
private ActionBarDrawerToggle mDrawerToggle;
private ListView mDrawerList;
private ListView mDrawerRightList;
private RelativeLayout mDrawerRelativeLayout;
private String[] mDrawerMenuTitles;
private Toolbar mToolbar;
...
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mDrawerMenuTitles = getResources().getStringArray(R.array.main_menu_options);
mDrawer = (DrawerLayout) findViewById(R.id.drawer);
mDrawerRelativeLayout = (RelativeLayout) findViewById(R.id.theDrawerRelativeLayout);
mDrawer.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
mDrawerRightList = (ListView) findViewById(R.id.theDrawerRight);
mDrawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, mDrawerRightList);
mDrawerList = (ListView) findViewById(R.id.theDrawer);
mDrawerList.setAdapter(new ArrayAdapter<String>(
getSupportActionBar().getThemedContext(),
R.layout.drawer_list_item,
mDrawerMenuTitles
));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
setmToolbar((Toolbar) findViewById(R.id.toolbar));
mDrawerToggle = new ActionBarDrawerToggle(
this,
mDrawer,
mToolbar,
R.string.drawer_open,
R.string.drawer_close){
@Override
public void onDrawerSlide(View drawerView, float slideOffset) {
// TODO Auto-generated method stub
super.onDrawerSlide(drawerView, slideOffset);
}
@Override
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
//getSupportActionBar().setTitle(CURRENT_FRAGMENT);
}
/** Called when a drawer has settled in a completely open state. */
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
//getSupportActionBar().setTitle("Configuración");
}
};
mDrawerToggle.setDrawerIndicatorEnabled(true);
mDrawerToggle.syncState();
mDrawer.setDrawerListener(mDrawerToggle);
setToolbarSubtitle(getString(R.string.misrutas_titulo));
initialisePreferences(savedInstanceState);
if (savedInstanceState == null) {
replaceFragment(DEFAULT_FRAGMENT);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
mDrawer.openDrawer(GravityCompat.START);
return true;
}
return super.onOptionsItemSelected(item);
}
private class DrawerItemClickListener implements OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//selectItem(position);
final int thePos = position;
mDrawer.setDrawerListener( new DrawerLayout.SimpleDrawerListener(){
@Override
public void onDrawerClosed(View drawerView){
....
}
});
if(mDrawer.isDrawerOpen(GravityCompat.START))
mDrawer.closeDrawer(mDrawerRelativeLayout);
}
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public void onBackPressed(){
setToolbarSubtitle(getString(R.string.app_name_subtitle));
if (getSupportFragmentManager().getBackStackEntryCount() == 1){
finish();
}
else {
super.onBackPressed();
}
}
private void replaceFragment (String to){
if(!to.equalsIgnoreCase(CURRENT_FRAGMENT)){
CURRENT_FRAGMENT = to;
Fragment fragment = Fragment.instantiate(HomeActivity.this, to);
String backStateName = fragment.getClass().getName();
String fragmentTag = backStateName;
FragmentManager manager = getSupportFragmentManager();
boolean fragmentPopped = manager.popBackStackImmediate (backStateName, 0);
if (!fragmentPopped && manager.findFragmentByTag(fragmentTag) == null){ //fragment not in back stack, create it.
FragmentTransaction ft = manager.beginTransaction();
ft.replace(R.id.content_frame, fragment, fragmentTag);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.addToBackStack(backStateName);
ft.commit();
}
}
}
//More methods
....
}
编辑：
我已经能够稍微修改我的布局，以便工具栏保持在其余屏幕（抽屉和片段）的顶部。但我无法控制图标。当我打开抽屉时，汉堡图标变成了箭头。当我关上抽屉时，箭头变成了汉堡包。但是当我按下抽屉中的一个选项时，一个新的片段会膨胀，并且汉堡图标被箭头替换，直到应用程序关闭，所以汉堡图标永远不会看到。
如何调整图标行为，以便在单击抽屉选项时它不会从汉堡包变为箭头？
【问题讨论】：
标签： android android-fragments icons navigation-drawer android-toolbar