我在Navigation Drawer中创建了一个BaseActivity的应用。除Action Bar中的标题更改外，一切正常。标题会更改一秒钟，但在打开新活动时会显示原始标题。
错误是什么？感谢
BaseActivity
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
PerfilAdapter.iniciarBaseDatos(this);
perfilObj = PerfilAdapter.selectPerfil(1);
requestWindowFeature(Window.FEATURE_ACTION_BAR);
cargarActionBar();
cargarDrawerLayout(savedInstanceState);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
switch (item.getItemId()) {
case R.id.menuOpcSonidos:
...
return true;
case R.id.menuOpcCambiarColor:
...
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
menu.findItem(R.id.menuOpcSonidos)
.setTitle(getResources().getString(R.string.sonidoOnOff) + " " + perfilObj.getSonidos());
return super.onPrepareOptionsMenu(menu);
}
private void cargarActionBar() {
ActionBar actionBar = getActionBar();
int[] colores2 = Modulo.cargarColoresDrawerlayout(perfilObj.getColor());
actionBar.setBackgroundDrawable(new GradientDrawable(Orientation.BOTTOM_TOP, colores2));
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
int titleId = Resources.getSystem().getIdentifier("action_bar_title", "id", "android");
TextView textoTitulo = (TextView)findViewById(titleId);
textoTitulo.setTextColor(getResources().getColor(R.color.blanco));
textoTitulo.setTypeface(null, Typeface.BOLD);
textoTitulo.setTextSize(19);
textoTitulo.setShadowLayer(5, 0, 0, getResources().getColor(R.color.negro));
}
private void cargarDrawerLayout(Bundle b) {
mTitle = mDrawerTitle = getTitle();
textosMenuLateral = getResources().getStringArray(R.array.nav_drawer_items);
iconosMenuLateral1 = getResources()
.obtainTypedArray(R.array.iconos_menu_lateral1);
iconosMenuLateral2 = getResources()
.obtainTypedArray(R.array.iconos_menu_lateral2);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.list_slidermenuMain);
int[] colores = {0, 0xFFFFFFFF, 0};
mDrawerList.setDivider(new GradientDrawable(Orientation.RIGHT_LEFT, colores));
mDrawerList.setDividerHeight(4);
navDrawerItems1 = new ArrayList<DrawerItem>();
navDrawerItems1.add(new DrawerItem(textosMenuLateral[0], iconosMenuLateral1.getResourceId(0, -1)));
navDrawerItems1.add(new DrawerItem(textosMenuLateral[1], iconosMenuLateral1.getResourceId(1, -1)));
navDrawerItems1.add(new DrawerItem(textosMenuLateral[2], iconosMenuLateral1.getResourceId(2, -1)));
navDrawerItems1.add(new DrawerItem(textosMenuLateral[3], iconosMenuLateral1.getResourceId(3, -1)));
navDrawerItems1.add(new DrawerItem(textosMenuLateral[4], iconosMenuLateral1.getResourceId(4, -1)));
navDrawerItems2 = new ArrayList<DrawerItem>();
navDrawerItems2.add(new DrawerItem(textosMenuLateral[0], iconosMenuLateral2.getResourceId(0, -1)));
navDrawerItems2.add(new DrawerItem(textosMenuLateral[1], iconosMenuLateral2.getResourceId(1, -1)));
navDrawerItems2.add(new DrawerItem(textosMenuLateral[2], iconosMenuLateral2.getResourceId(2, -1)));
navDrawerItems2.add(new DrawerItem(textosMenuLateral[3], iconosMenuLateral2.getResourceId(3, -1)));
navDrawerItems2.add(new DrawerItem(textosMenuLateral[4], iconosMenuLateral2.getResourceId(4, -1)));
iconosMenuLateral1.recycle();
iconosMenuLateral2.recycle();
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
adapter = new DrawerListAdapter(getApplicationContext(),
navDrawerItems1,
navDrawerItems2,
perfilObj.getColor(),
pos);
mDrawerList.setAdapter(adapter);
mDrawerToggle = new ActionBarDrawerToggle(
this,
mDrawerLayout,
R.drawable.icono_drawer,
R.string.app_name,
R.string.app_name
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (b == null) {
opcionesPanelLateral(0);
}
}
private class SlideMenuClickListener implements ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
TextView textView = (TextView) view.findViewById(R.id.title);
textView.setTypeface(null, Typeface.BOLD);
opcionesPanelLateral(position);
}
}
private void opcionesPanelLateral(int position) {
Intent i;
switch (position) {
case 0:
pos = 0;
break;
case 1:
i = new Intent(this, ActivitySecond.class);
mDrawerLayout.closeDrawer(mDrawerList);
startActivity(i);
pos = 1;
break;
case 2:
i = new Intent(this, ActivityThird.class);
mDrawerLayout.closeDrawer(mDrawerList);
startActivity(i);
pos = 2;
break;
case 3:
i = new Intent(this, ActivityFourth.class);
mDrawerLayout.closeDrawer(mDrawerList);
startActivity(i);
pos = 3;
break;
case 4:
break;
default:
break;
}
mDrawerList.setItemChecked(pos, true);
mDrawerList.setSelection(pos);
setTitle(textosMenuLateral[pos]);
mDrawerLayout.closeDrawer(mDrawerList);
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
cargarActionBar();
cargarDrawerLayout(savedInstanceState);
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
public void onBackPressed() {
mDrawerLayout.closeDrawer(mDrawerList);
}
我认为错误是使用活动...但我不知道修复
答案 0 :(得分：1)
Android Studio允许通过文件|向应用添加导航抽屉新的|活性即可。这是＆＃34;现成的＆＃34;导航抽屉带有您需要的一切：属性，方法，事件等。
更改不同片段的标题的后续步骤旨在与Android Studio的现成导航抽屉一起使用，但它们可能对任何人都有帮助：
导航抽屉有几个文件：一个活动，一个或 更多碎片。打开导航抽屉的java活动文件（什么 你打电话给＃34;基本活动＆＃34;）。
查找方法 onCreate 。
在此方法中，添加 mTitle =＆＃34; ???＆＃34; 这一行，其中＆＃34; ???＆＃34;是的标题 我将在导航抽屉中显示的第一个片段 屏幕出现。
现在找到方法 onNavigationDrawerItemSelected 。查理，我不确定， 但我相信你的名字是 opcionesPanelLateral 。
在此方法中，您有开关。此开关打开适当的 片段取决于所选的选项。要设置每个标题 片段，转到开关中的每个大小写添加行 mTitle =＆＃34; My 标题＆＃34 ;; 在 frg = new my_frag（）; 之前。这样，片段打开时 它会显示合适的标题。
查找方法 restoreActionBar 。查理，我在你的代码中没有看到它 也没有任何等效方法。添加它。在里面，添加线 actionBar.setTitle（mTitle）; ，这里标题实际上是 设置（也许这就是你的标题消失的原因）。在里面调用这个方法 onCreateOptionsMenu （充气后）。
那就是它。我使用硬编码字符串，如果您遵循Android规则，请使用strings.xml。
现在是一个真实的例子来自我现在正在努力的应用程序。接下来是我的＆＃34; BaseActivity＆＃34;的原始代码。现成的导航抽屉（有些东西是西班牙语，因为我是成年人）：
package my_package;
//------------------------------------------------------------------------------
import android.app.Activity;
import android.graphics.drawable.ColorDrawable;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.support.v4.widget.DrawerLayout;
//------------------------------------------------------------------------------
public class menu_act extends ActionBarActivity
implements drawer_frg.NavigationDrawerCallbacks {
//------------------------------------------------------------------------------
// Fragment managing the behaviors, interactions and presentation of the navigation drawer.
private drawer_frg mNavigationDrawerFragment;
// Used to store the last screen title. For use in {@link #restoreActionBar()}.
private CharSequence mTitle;
//------------------------------------------------------------------------------
@Override
protected void onCreate ( Bundle savedInstanceState ) {
super.onCreate( savedInstanceState );
setContentView( R.layout.menu_lay );
mNavigationDrawerFragment = (drawer_frg) getSupportFragmentManager().findFragmentById(
R.id.navigation_drawer );
mTitle = "Perfil"; // getTitle();
// Set up the drawer.
mNavigationDrawerFragment.setUp( R.id.navigation_drawer,( DrawerLayout )
findViewById( R.id.drawer_layout ) );
// BARRA DE TÍTULO ANARANJADA.
//ActionBar actionBar = getSupportActionBar();
//actionBar.setBackgroundDrawable( new ColorDrawable( getResources().getColor( R.color.col_nar ) ) );
}
//------------------------------------------------------------------------------
@Override
public void onNavigationDrawerItemSelected ( int position ) {
Fragment frg;
// getSupportActionBar().setDisplayOptions( ActionBar.DISPLAY_SHOW_CUSTOM );
switch ( position )
{ case 0 : //getSupportActionBar().setCustomView( R.layout.perfil_tit );
mTitle = "Perfil";
frg = new perfil_frg();
break;
case 1 : // getSupportActionBar().setCustomView( R.layout.contactos_tit );
mTitle = "Contactos";
frg = new contactos_frg();
break;
default : frg = PlaceholderFragment.newInstance( position + 1 );
}
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace( R.id.container,frg ).commit();
}
//------------------------------------------------------------------------------
public void onSectionAttached ( int number ) {
switch (number) {
case 1 : mTitle = getString( R.string.mnu_opc_per ); break;
case 2 : mTitle = getString( R.string.mnu_opc_con ); break;
case 3 : mTitle = getString( R.string.mnu_opc_sal ); break;
}
}
//------------------------------------------------------------------------------
public void restoreActionBar () {
ActionBar actionBar = getSupportActionBar();
actionBar.setNavigationMode( ActionBar.NAVIGATION_MODE_STANDARD );
actionBar.setDisplayShowTitleEnabled( true );
actionBar.setTitle( mTitle );
}
//------------------------------------------------------------------------------
@Override
public boolean onCreateOptionsMenu(Menu menu) {
if ( ! mNavigationDrawerFragment.isDrawerOpen() )
{ // Only show items in the action bar relevant to this screen
// if the drawer is not showing. Otherwise, let the drawer
// decide what to show in the action bar.
getMenuInflater().inflate( R.menu.menu_act,menu );
restoreActionBar();
return true;
}
return super.onCreateOptionsMenu( menu );
}
//------------------------------------------------------------------------------
@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.
int id = item.getItemId();
/*
//noinspection SimplifiableIfStatement
if ( id == R.id.action_settings )
return true;
*/
//mDrawerToggle.syncState();
return super.onOptionsItemSelected( item );
}
//==============================================================================
// A placeholder fragment containing a simple view.
public static class PlaceholderFragment extends Fragment {
//------------------------------------------------------------------------------
// The fragment argument representing the section number for this fragment.
private static final String ARG_SECTION_NUMBER = "section_number";
//------------------------------------------------------------------------------
// Returns a new instance of this fragment for the given section number.
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
//------------------------------------------------------------------------------
public PlaceholderFragment() {
}
//------------------------------------------------------------------------------
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.menu_frg, container, false);
return rootView;
}
//------------------------------------------------------------------------------
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((menu_act) activity).onSectionAttached( getArguments().getInt(ARG_SECTION_NUMBER));
}
//==============================================================================
}
//------------------------------------------------------------------------------
}