Android 缺少 ActionBar 图标
Android ActionBar icons are missing
我想向我的 ActionBar 添加一个图标，但我无法让 ActionBar 显示我在菜单文件中定义的图标。我试过将 Activity 更改为 ActionBarActivity 但是，如果我这样做，应用程序会崩溃。我也尝试将主题更改为 Theme.AppCompat，但没有用。这是我的代码：
public class MainActivity extends Activity {
private DrawerLayout drawerLayout;
private ListView drawerList;
private ActionBarDrawerToggle drawerToggle;
private CharSequence activityTitle;
private CharSequence itemTitle;
private String[] tagTitles;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
itemTitle = activityTitle = getTitle();
tagTitles = getResources().getStringArray(R.array.nav_options);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerList = (ListView) findViewById(R.id.left_drawer);
View header = getLayoutInflater().inflate(R.layout.drawer_cabecera, null);
drawerList.addHeaderView(header);
drawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
ArrayList<item_object> items = new ArrayList<item_object>();
items.add(new item_object(tagTitles[1],R.drawable.ic_action_person));
items.add(new item_object(tagTitles[2],R.drawable.ic_action_search));
items.add(new item_object(tagTitles[3],R.drawable.ic_action_sd_storage));
items.add(new item_object(tagTitles[4],R.drawable.ic_action_cloud));
items.add(new item_object(tagTitles[5],R.drawable.ic_action_about));
drawerList.setAdapter(new NavigationAdapter(this, items));
drawerList.setOnItemClickListener(new DrawerItemClickListener());
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
drawerToggle = new ActionBarDrawerToggle(
this,
drawerLayout,
//R.drawable.ic_drawer,
R.string.drawer_open,
R.string.drawer_close
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(itemTitle);
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(activityTitle);
}
};
drawerLayout.setDrawerListener(drawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (drawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class DrawerItemClickListener implements ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
}
private void selectItem(int position) {
Fragment fragment = null;
Class clase = null;
Activity actividad = null;
switch (position) {
case 1:
fragment = new PerfilFragment();
break;
case 2:
fragment = new SeleccionarFragment();
break;
case 3:
fragment = new GestorFragment();
break;
case 4:
fragment = new DriveFragment();
break;
case 5:
fragment = new InfoFragment();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
drawerList.setItemChecked(position, true);
drawerList.setSelection(position);
setTitle(tagTitles[position]);
drawerLayout.closeDrawer(drawerList);
} else {
// Error al crear el fragmento
Log.e("MainActivity", "Error al crear el fragmento");
}
}
@Override
public void setTitle(CharSequence title) {
itemTitle = title;
getActionBar().setTitle(itemTitle);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sincronizar el estado del drawer
drawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
}
在我的清单中我有这个：
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.VIBRATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-feature
android:name="android.hardware.wifi"
android:required="true" >
</uses-feature>
<application
android:allowBackup="true"
android:icon="@drawable/logo1"
android:label="@string/app_name"
android:theme="@android:style/Theme.Holo.Light.DarkActionBar">
<activity
android:name=".LoginActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity"></activity>
<activity android:name=".GestorActivity"></activity>
<activity
android:name="etsiit.etsiitcast_def.SeleccionarActivity"
android:screenOrientation="portrait"
android:theme="@style/Theme.AppCompat.NoActionBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
</intent-filter>
</activity>
</application>
这是 Main 的布局Activity
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<!-- As the main content view, the view below consumes the entire
space available using match_parent in both dimensions. -->
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"/>
<!-- android:layout_gravity="start" tells DrawerLayout to treat
this as a sliding drawer on the left side for left-to-right
languages and on the right side for right-to-left languages.
The drawer is given a fixed width in dp and extends the full height of
the container. A solid background is used for contrast
with the content view. -->
<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="fill_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="#CFCFCF"
android:dividerHeight="2dp"
android:background="#424242"
android:textColor="#424242"
/>
</android.support.v4.widget.DrawerLayout>
这里是 menu_main.xml 代码：
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".MainActivity">
<item
android:id="@+id/action_settings"
android:orderInCategory="100"
android:title="@string/action_settings"
app:showAsAction="never" />
<item
android:id="@+id/action_search"
android:orderInCategory="200"
android:title="Search"
android:icon="@drawable/cast_icon_blanco"
app:showAsAction="ifRoom"
></item>
</menu>
感谢您的帮助。
第 1 步：将菜单资源中出现的所有 app: 替换为 android:。 app: 与 appcompat-v7 或其他库一起使用，并且您使用的是本机操作栏。
第 2 步：如果您希望 action_settings 在操作栏中显示为工具栏按钮，请将 android:showAsAction="never" 替换为 android:showAsAction="ifRoom"（或者 always 而不是ifRoom).
我想向我的 ActionBar 添加一个图标，但我无法让 ActionBar 显示我在菜单文件中定义的图标。我试过将 Activity 更改为 ActionBarActivity 但是，如果我这样做，应用程序会崩溃。我也尝试将主题更改为 Theme.AppCompat，但没有用。这是我的代码：
public class MainActivity extends Activity {
private DrawerLayout drawerLayout;
private ListView drawerList;
private ActionBarDrawerToggle drawerToggle;
private CharSequence activityTitle;
private CharSequence itemTitle;
private String[] tagTitles;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
itemTitle = activityTitle = getTitle();
tagTitles = getResources().getStringArray(R.array.nav_options);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerList = (ListView) findViewById(R.id.left_drawer);
View header = getLayoutInflater().inflate(R.layout.drawer_cabecera, null);
drawerList.addHeaderView(header);
drawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
ArrayList<item_object> items = new ArrayList<item_object>();
items.add(new item_object(tagTitles[1],R.drawable.ic_action_person));
items.add(new item_object(tagTitles[2],R.drawable.ic_action_search));
items.add(new item_object(tagTitles[3],R.drawable.ic_action_sd_storage));
items.add(new item_object(tagTitles[4],R.drawable.ic_action_cloud));
items.add(new item_object(tagTitles[5],R.drawable.ic_action_about));
drawerList.setAdapter(new NavigationAdapter(this, items));
drawerList.setOnItemClickListener(new DrawerItemClickListener());
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
drawerToggle = new ActionBarDrawerToggle(
this,
drawerLayout,
//R.drawable.ic_drawer,
R.string.drawer_open,
R.string.drawer_close
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(itemTitle);
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(activityTitle);
}
};
drawerLayout.setDrawerListener(drawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (drawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class DrawerItemClickListener implements ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
}
private void selectItem(int position) {
Fragment fragment = null;
Class clase = null;
Activity actividad = null;
switch (position) {
case 1:
fragment = new PerfilFragment();
break;
case 2:
fragment = new SeleccionarFragment();
break;
case 3:
fragment = new GestorFragment();
break;
case 4:
fragment = new DriveFragment();
break;
case 5:
fragment = new InfoFragment();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
drawerList.setItemChecked(position, true);
drawerList.setSelection(position);
setTitle(tagTitles[position]);
drawerLayout.closeDrawer(drawerList);
} else {
// Error al crear el fragmento
Log.e("MainActivity", "Error al crear el fragmento");
}
}
@Override
public void setTitle(CharSequence title) {
itemTitle = title;
getActionBar().setTitle(itemTitle);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sincronizar el estado del drawer
drawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
}
在我的清单中我有这个：
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.VIBRATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-feature
android:name="android.hardware.wifi"
android:required="true" >
</uses-feature>
<application
android:allowBackup="true"
android:icon="@drawable/logo1"
android:label="@string/app_name"
android:theme="@android:style/Theme.Holo.Light.DarkActionBar">
<activity
android:name=".LoginActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity"></activity>
<activity android:name=".GestorActivity"></activity>
<activity
android:name="etsiit.etsiitcast_def.SeleccionarActivity"
android:screenOrientation="portrait"
android:theme="@style/Theme.AppCompat.NoActionBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
</intent-filter>
</activity>
</application>
这是 Main 的布局Activity
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<!-- As the main content view, the view below consumes the entire
space available using match_parent in both dimensions. -->
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"/>
<!-- android:layout_gravity="start" tells DrawerLayout to treat
this as a sliding drawer on the left side for left-to-right
languages and on the right side for right-to-left languages.
The drawer is given a fixed width in dp and extends the full height of
the container. A solid background is used for contrast
with the content view. -->
<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="fill_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="#CFCFCF"
android:dividerHeight="2dp"
android:background="#424242"
android:textColor="#424242"
/>
</android.support.v4.widget.DrawerLayout>
这里是 menu_main.xml 代码：
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".MainActivity">
<item
android:id="@+id/action_settings"
android:orderInCategory="100"
android:title="@string/action_settings"
app:showAsAction="never" />
<item
android:id="@+id/action_search"
android:orderInCategory="200"
android:title="Search"
android:icon="@drawable/cast_icon_blanco"
app:showAsAction="ifRoom"
></item>
</menu>
感谢您的帮助。
第 1 步：将菜单资源中出现的所有 app: 替换为 android:。 app: 与 appcompat-v7 或其他库一起使用，并且您使用的是本机操作栏。
第 2 步：如果您希望 action_settings 在操作栏中显示为工具栏按钮，请将 android:showAsAction="never" 替换为 android:showAsAction="ifRoom"（或者 always 而不是ifRoom).