Java 尽管显示了片段内容,但工具栏内容未显示
我试图在我的工具栏中显示必要的内容(即标题和后退按钮),但由于某种原因,它没有出现,但我的片段中的主要内容却出现了。如何解决这个问题 MapActivity.javaJava 尽管显示了片段内容,但工具栏内容未显示,java,android,xml,android-fragments,android-toolbar,Java,Android,Xml,Android Fragments,Android Toolbar,我试图在我的工具栏中显示必要的内容(即标题和后退按钮),但由于某种原因,它没有出现,但我的片段中的主要内容却出现了。如何解决这个问题 MapActivity.java public class MapActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState
public class MapActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_map);
SubsamplingScaleImageView imageView = (SubsamplingScaleImageView)findViewById(R.id.imageView);
imageView.setImage(ImageSource.resource(R.drawable.map));
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == android.R.id.home) {
final Intent intent = NavUtils.getParentActivityIntent(this);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
NavUtils.navigateUpTo(this, intent);
return true;
}
return false;
}
}
public class FragmentMap extends android.support.v4.app.Fragment {
public FragmentMap() {
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_map, container, false);
Toolbar toolbar = (Toolbar) v.findViewById(R.id.actionBar);
toolbar.setBackgroundColor(Color.parseColor("#212121"));
AppCompatActivity activity = (AppCompatActivity) getActivity();
activity.setSupportActionBar(toolbar);
activity.getSupportActionBar().setTitle(Html.fromHtml("<font color='#FFFFFF'>" + getResources().getString(R.string.map) + "</font>"));
activity.getSupportActionBar().setDisplayHomeAsUpEnabled(true);
activity.getSupportActionBar().setDisplayShowHomeEnabled(false);
return v;
}
}
FragmentMap.java
public class MapActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_map);
SubsamplingScaleImageView imageView = (SubsamplingScaleImageView)findViewById(R.id.imageView);
imageView.setImage(ImageSource.resource(R.drawable.map));
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == android.R.id.home) {
final Intent intent = NavUtils.getParentActivityIntent(this);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
NavUtils.navigateUpTo(this, intent);
return true;
}
return false;
}
}
public class FragmentMap extends android.support.v4.app.Fragment {
public FragmentMap() {
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_map, container, false);
Toolbar toolbar = (Toolbar) v.findViewById(R.id.actionBar);
toolbar.setBackgroundColor(Color.parseColor("#212121"));
AppCompatActivity activity = (AppCompatActivity) getActivity();
activity.setSupportActionBar(toolbar);
activity.getSupportActionBar().setTitle(Html.fromHtml("<font color='#FFFFFF'>" + getResources().getString(R.string.map) + "</font>"));
activity.getSupportActionBar().setDisplayHomeAsUpEnabled(true);
activity.getSupportActionBar().setDisplayShowHomeEnabled(false);
return v;
}
}
公共类FragmentMap扩展了android.support.v4.app.Fragment{
公共碎片地图(){
}
@可空
@凌驾
CreateView上的公共视图(布局、充气机、视图组容器、捆绑包保存状态){
视图v=充气机。充气(R.layout.fragment\u图,容器,假);
工具栏=(工具栏)v.findViewById(R.id.actionBar);
toolbar.setBackgroundColor(Color.parseColor(“#212121”);
AppCompatActivity活动=(AppCompatActivity)getActivity();
activity.setSupportActionBar(工具栏);
activity.getSupportActionBar().setTitle(Html.fromHtml(“+getResources().getString(R.string.map)+”);
activity.getSupportActionBar().setDisplayHomeAsUpEnabled(true);
activity.getSupportActionBar().setDisplayShowHomeEnabled(false);
返回v;
}
}
片段映射.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/fragmentmap" >
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/actionBar"
android:elevation="4dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentInsetEnd="0dp"
app:contentInsetStart="16dp" >
</android.support.v7.widget.Toolbar>
<com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
<resources>
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
</style>
</resources>
styles.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/fragmentmap" >
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/actionBar"
android:elevation="4dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentInsetEnd="0dp"
app:contentInsetStart="16dp" >
</android.support.v7.widget.Toolbar>
<com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
<resources>
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
</style>
</resources>
添加此项
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_map, container, false);
Toolbar toolbar = (Toolbar) v.findViewById(R.id.actionBar);
toolbar.setBackgroundColor(Color.parseColor("#212121"));
//---- changes ---
((MapActivity) getActivity()).setTitle(Html.fromHtml("<font color='#FFFFFF'>" + getResources().getString(R.string.map) + "</font>"));
((MapActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
((MapActivity) getActivity()).getSupportActionBar().setDisplayShowHomeEnabled(false);
return v;
}
@覆盖
CreateView上的公共视图(布局、充气机、视图组容器、捆绑包保存状态){
视图v=充气机。充气(R.layout.fragment\u图,容器,假);
工具栏=(工具栏)v.findViewById(R.id.actionBar);
toolbar.setBackgroundColor(Color.parseColor(“#212121”);
//----变化---
((MapActivity)getActivity()).setTitle(Html.fromHtml(“+getResources().getString(R.string.map)+”);
((MapActivity)getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
((MapActivity)getActivity()).getSupportActionBar().setDisplayShowHomeEnabled(false);
返回v;
}
完整的代码
地图活动
activity_map.xml
styles.xml
MapActivityFragment.java
导入android.support.v4.app.Fragment;
导入android.os.Bundle;
导入android.text.Html;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.view.ViewGroup;
/**
*包含简单视图的占位符片段。
*/
公共类MapActivityFragment扩展了片段{
公共MapActivityFragment(){
}
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
视图根视图=充气机。充气(R.layout.fragment\u map,container,false);
getActivity().setTitle(Html.fromHtml(“+”Hello Toolbar“+”);
返回rootView;
}
}
fragment_map.xml
现在可以在我的问题中找到。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:background="@color/whiteColor"
android:paddingBottom="@dimen/activity_vertical_margin">
<TextView android:text="@string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/blackColor"/>
</RelativeLayout>