我正在尝试在我的活动中创建一个工具栏。但是,它不起作用,动作栏中没有任何内容。我试图让我的活动从BaseActivity扩展,它有工具栏配置。
我认为
存在问题onCreateOptionsMenu(菜单菜单)
BaseActivity.java
public abstract class BaseActivity extends AppCompatActivity {
private Toolbar toolbar;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(getLayoutResource());
configureToolbar();
}
protected abstract int getLayoutResource();
private void configureToolbar() {
toolbar = (Toolbar) findViewById(R.id.toolbar);
if (toolbar != null) {
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
}
// Menu icons are inflated just as they were with actionbar
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_menu, menu);
return true;
}
//Handle an option being selected on the menu
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch(item.getItemId())
{
case R.id.selPg:
SelectionPage();
return true;
case R.id.choosePg:
ChoosingPage();
return true;
case R.id.addPg:
AddingPage();
return true;
default:
return super.onOptionsItemSelected(item);
}
//....//
}
ChildActivity.java
public class form_activity extends BaseActivity {
@Override
public int getLayoutResource() {
return R.layout.add_form;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_form);
initializeUI();
}
.....}
Child.xml
<!-- Load the toolbar here -->
<include
android:id="@+id/toolbar"
layout="@layout/tool_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
main_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/selPg"
android:icon="@android:drawable/ic_menu_help"
android:title="Selecton Page"/>
<item android:id="@+id/choosePg"
android:icon="@android:drawable/ic_menu_directions"
android:title="Choosing Page"/>
<item android:id="@+id/addPg"
android:icon="@android:drawable/ic_menu_add"
android:title="Adding Page"/>
</menu>
tool_bar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:minHeight="?attr/actionBarSize"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:titleTextColor="@android:color/white"
android:background="?attr/colorPrimary">
</android.support.v7.widget.Toolbar>
styles.xml
<style name="AppCompatTheme" parent="@style/Theme.AppCompat.NoActionBar">
清单
android:theme="@style/AppCompatTheme">
答案 0 :(得分:0)
在你的清单中这样做:
<activity
android:name=".MainActivity"
android:theme="@style/AppTheme.NoActionBar" />
覆盖样式xml文件
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
在Layout XML中添加工具栏:
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:background="@color/colorPrimary"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
xmlns:android="http://schemas.android.com/apk/res/android">
最后,在扩展AppCompatActivity的主要活动中,扩展工具栏:
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setTitle("My Activity");
setSupportActionBar(toolbar);
答案 1 :(得分:0)
您设置setContentView
两次(在BaseActivity和ChildActivity中)。