我一直在嘗試創建一個現有的應用程序的導航抽屜。我已經找到了一些這方面的教程,但其中大部分(包括official Android guide)似乎是針對第4版ActionBarDrawerToggle庫,它已被棄用。我試圖使用v7庫來代替,但我的ActionBarDrawerToggle似乎沒有做什麼documentation說它應該做的。導航抽屜漢堡包圖標不顯示與v7 ActionBarDrawerToggle
編輯:根據下面的答案修改我的代碼。漢堡包圖標現在可以正確地來回切換,但是當用戶點擊硬件返回按鈕返回到我的應用的主要片段時,漢堡包圖標完全消失。爲什麼會發生?
private void addDrawerItems() {
String[] itemArray = {"About", "Nearby", "Settings", "Feedback",};
mAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, itemArray);
mDrawerList.setAdapter(mAdapter);
mDrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.d("ContributionsActivity", "Item " + position + " selected");
}
});
}
private void setupDrawer() {
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.drawer_open, R.string.drawer_close) {
/** Called when a drawer has settled in a completely open state. */
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
};
mDrawerToggle.setDrawerIndicatorEnabled(true);
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle(R.string.title_activity_contributions);
setContentView(R.layout.activity_contributions);
//Set up navigation drawer
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
mDrawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
mDrawerList = (ListView)findViewById(R.id.drawer_list);
addDrawerItems();
setupDrawer();
...
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// enabling drawer toggle by clicking on the app icon.
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
} else {
switch (item.getItemId()) {
case android.R.id.home:
if (mediaDetails.isVisible()) {
getSupportFragmentManager().popBackStack();
}
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
試試這篇文章:http://stackoverflow.com/questions/26754940/appcompatv7-v21-navigation-drawer-not-showing-hamburger-icon?rq = 1 –