我无法显示抽屉指示器。目前我没有任何东西或“<”根据actionBar设置,在屏幕的左上角。但我想要Nagivation抽屉的抽屉指示器。
我用:
以下是代码片段:
@Override
protected void onCreate(Bundle savedInstanceState)
{
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
//I tried all combinations unsuccessfully
....
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerLV = (ListView) findViewById(R.id.left_drawer);
drawer_Linearlayout = (LinearLayout) findViewById(R.id.drawer_Linearlayout);
drawerLV.setAdapter(new ArrayAdapter<String>(
this,
R.layout.layout_main_drawer_list_item,
mDrawerItems));
drawerLV.setOnItemClickListener(new ListView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
});
drawerToggle = new ActionBarDrawerToggle(this, drawer, R.string.drawer_open,R.string.drawer_close) {
@Override
public void onDrawerClosed(View view) {
actionBar.setTitle(mTitle);
}
@Override
public void onDrawerOpened(View drawerView) {
actionBar.setTitle(mDrawerTitle);
}
};
drawerToggle.setDrawerIndicatorEnabled(true);
drawer.setDrawerListener(drawerToggle);
}
答案 0 :(得分:1)
我最终解决了我的问题。 我忘了在我的Acticity中添加以下回调:
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
drawerToggle.syncState();
}
顺便说一下,当导航抽屉打开或关闭时,v7.app.ActionBarDrawerToggle的Lollipop升级会增加一个很好的效果。我推荐它。
答案 1 :(得分:0)
我认为您还必须在android.R.id.home
中指定onOptionsItemSelected
以使后退按钮可见:
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
//the onClick for your back button
return true;
default:
return super.onOptionsItemSelected(item);
}
}
您只需要使用actionBar.setDisplayHomeAsUpEnabled(true);
更新:
只是快速谷歌搜索,看看这个:
Display back button on action bar
试试我的回答。我认为它会解决你的问题。
答案 2 :(得分:0)
对不起我之前的回答,我误解了。认为这就是你需要的:
mDrawerToggle = new ActionBarDrawerToggle(
this,
mDrawerLayout,
R.drawable.ic_drawer, /* The image drawable you're missing */
R.string.navigation_drawer_open,
R.string.navigation_drawer_close
图像是自定义的,也称为汉堡包。