Java 未对片段调用OnOptions ItemSelected()方法
我有一个活动和一些片段。操作栏上的“后退”按钮在Java 未对片段调用OnOptions ItemSelected()方法,java,android,android-fragments,android-actionbar,Java,Android,Android Fragments,Android Actionbar,我有一个活动和一些片段。操作栏上的“后退”按钮在AboutFragment中不起作用 活动没有菜单,而片段在操作栏中只有一个后退按钮 片段菜单可见,但点击后退按钮时根本没有反应 单击actionbar中的信息图标,将显示关于片段的 单击i图标时,下面的方法在MainActivity中工作 @Override public void onInfoSelected() { abf = (AboutFragment) getSupportFragmentManager()
AboutFragment
中不起作用
活动没有菜单,而片段在操作栏中只有一个后退按钮
片段菜单可见,但点击后退按钮时根本没有反应
单击actionbar中的信息图标,将显示关于片段的
单击i
图标时,下面的方法在MainActivity
中工作
@Override
public void onInfoSelected() {
abf = (AboutFragment) getSupportFragmentManager().findFragmentByTag(ABOUT_FRAGMENT_TAG);
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right,
android.R.anim.slide_in_left, android.R.anim.slide_out_right);
// ft.hide(pf);
//ft.hide(cf);
ft.hide(tlf);
ft.show(abf);
ft.addToBackStack(null);
ft.commit();
}
然后AboutFragment内的back按钮不会调用片段内的OnOptions ItemSelected()
方法
调试时,我可以看到片段和活动的onCreateOptionsMenu()
都被调用,但当点击按钮时,无论是从活动还是从片段,都不会调用任何onOptionsItemSelected()
这两天我一直在搜索和谷歌搜索,什么都没用。
任何帮助都将受到感谢
活动Java代码
package me.declangao.jiasazsales.app;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import me.declangao.jiasazsales.R;
import me.declangao.jiasazsales.model.Post;
public class MainActivity extends AppCompatActivity implements
RecyclerViewFragment.PostListListener, PostFragment.PostListener,
TabLayoutFragment.TabLayoutListener, SearchResultFragment.SearchResultListener,
CommentFragment.CommentListener,AboutFragment.AboutListener {
private static final String TAG = MainActivity.class.getSimpleName();
public static final String TAB_LAYOUT_FRAGMENT_TAG = "TabLayoutFragment";
public static final String POST_FRAGMENT_TAG = "PostFragment";
public static final String COMMENT_FRAGMENT_TAG = "CommentFragment";
public static final String ABOUT_FRAGMENT_TAG = "AboutFragment";
private FragmentManager fm = null;
private TabLayoutFragment tlf;
private PostFragment pf;
private CommentFragment cf;
private SearchResultFragment srf;
private AboutFragment abf;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
fm = getSupportFragmentManager();
// Setup fragments
tlf = new TabLayoutFragment();
pf = new PostFragment();
cf = new CommentFragment();
srf = new SearchResultFragment();
abf=new AboutFragment();
FragmentTransaction ft = fm.beginTransaction();
ft.add(android.R.id.content, abf, ABOUT_FRAGMENT_TAG);
ft.add(android.R.id.content, pf, POST_FRAGMENT_TAG);
ft.add(android.R.id.content, cf, COMMENT_FRAGMENT_TAG);
ft.add(android.R.id.content, tlf, TAB_LAYOUT_FRAGMENT_TAG);
ft.hide(pf);
ft.hide(cf);
ft.hide(abf);
ft.show(tlf);
ft.commit();
}
/**
* Invoked when a post in the list is selected
*
* @param post Selected Post object
*/
@Override
public void onPostSelected(Post post, boolean isSearch) {
// Find the fragment in order to set it up later
pf = (PostFragment) getSupportFragmentManager().findFragmentByTag(POST_FRAGMENT_TAG);
// Set necessary arguments
Bundle args = new Bundle();
args.putInt("id", post.getId());
args.putString("title", post.getTitle());
args.putString("date", post.getDate());
args.putString("author", post.getAuthor());
args.putString("content", post.getContent());
args.putString("url", post.getUrl());
//args.putString("thumbnailUrl", post.getThumbnailUrl());
args.putString("featuredImage", post.getFeaturedImageUrl());
// Configure PostFragment to display the right post
pf.setUIArguments(args);
// Show the fragment
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right,
android.R.anim.slide_in_left, android.R.anim.slide_out_right);
if (!isSearch) { // Hide TabLayoutFragment if this is not search result
ft.hide(tlf);
} else { // Otherwise, hide the search result, ie. SearchResultFragment.
ft.hide(srf);
}
ft.show(pf);
ft.addToBackStack(null);
ft.commit();
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
//do something here like
Log.e("menu Test","rom Main activity");
int backStackEntryCount
=getSupportFragmentManager().getBackStackEntryCount();
if (backStackEntryCount > 0) {
getSupportFragmentManager().popBackStack();
}
return true;
}
return false;
}
/**
* Invoked when a search query is submitted
*
* @param query Selected Post object
*/
@Override
public void onSearchSubmitted(String query) {
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right,
android.R.anim.slide_in_left, android.R.anim.slide_out_right);
// Send query to fragment using factory method
srf = SearchResultFragment.newInstance(query);
ft.add(android.R.id.content, srf);
ft.hide(tlf);
ft.addToBackStack(null);
ft.commit();
}
@Override
public void onInfoSelected() {
abf = (AboutFragment) getSupportFragmentManager().findFragmentByTag(ABOUT_FRAGMENT_TAG);
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right,
android.R.anim.slide_in_left, android.R.anim.slide_out_right);
// ft.hide(pf);
//ft.hide(cf);
ft.hide(tlf);
ft.show(abf);
ft.addToBackStack(null);
ft.commit();
}
/**
* Invoked when comment menu is selected
*
* @param id ID of the article, assigned by WordPress
*/
@Override
public void onCommentSelected(int id) {
cf = (CommentFragment) getSupportFragmentManager().findFragmentByTag(COMMENT_FRAGMENT_TAG);
Bundle args = new Bundle();
args.putInt("id", id);
// Setup CommentFragment to display the right comments page
cf.setUIArguments(args);
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right,
android.R.anim.slide_in_left, android.R.anim.slide_out_right);
ft.hide(pf);
//ft.hide(abf);
ft.show(cf);
ft.addToBackStack(null);
ft.commit();
}
/**
* Intercept back button event, reset ActionBar if necessary
*/
@Override
public void onBackPressed() {
resetActionBarIfApplicable();
super.onBackPressed();
}
/**
* Simulate a back button press when home is selected
*/
@Override
public void onHomePressed() {
resetActionBarIfApplicable();
fm.popBackStack();
}
/**
* Reset TabLayoutFragment's ActionBar if necessary
*/
private void resetActionBarIfApplicable() {
Log.d(TAG, "SearchResultFragment is visible: " + srf.isHidden());
if (srf.isVisible()) {
tlf.resetActionBar();
}
}
// Commented out coz we will let fragments handle their own Options Menus
/*
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
//Log.e("Erroraaa","aaaaa");
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Log.e("menu","activity: action home has clicked");
switch (item.getItemId()){
case android.R.id.home:
onBackPressed();
return false;
}
return super.onOptionsItemSelected(item);
}
*/
}
<FrameLayout 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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorAccent"
android:layoutDirection="rtl"
android:textDirection="rtl"
tools:context="me.declangao.jiasazsales.app.AboutFragment">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layoutDirection="rtl"
android:textDirection="rtl"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/colorPrimary"
android:theme="@style/ThemeOverlay.AppCompat.Dark"
android:layoutDirection="rtl"
android:textDirection="rtl"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layoutDirection="rtl"
android:textDirection="rtl"
android:padding="15dp"
android:orientation="vertical">
<TextView
android:id="@+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginBottom="10dp"
android:text="ئهم ئاپه لهلایهن كۆمپانیای جیاساز دروست كراوه"
android:textAppearance="@style/TextAppearance.AppCompat.Light.SearchResult.Title" />
<ImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="214dp"
android:src="@drawable/jiasazlogo" />
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginBottom="10dp"
android:text="كۆمپانیای جیاساز بۆ خزمهتگوزاری و چارهسهری تهكنهلۆجی، دروستكردنی وێبسایت و ئاپی مۆبایل و سیستهمی دام و دهزگاكان و ماركێتهكان"
android:textAppearance="@style/TextAppearance.AppCompat.Light.SearchResult.Title" />
<TextView
android:id="@+id/textView3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="all"
android:clickable="true"
android:text="@string/link"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
android:textSize="18sp" />
</LinearLayout>
</LinearLayout>
</FrameLayout>
关于碎片
package me.declangao.jiasazsales.app;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import me.declangao.jiasazsales.R;
/**
* Fragment to display a Info about Jiasaz company.
* Activities that contain this fragment must implement the
* {@link AboutFragment.AboutListener} interface
* to handle interaction events.
*/
public class AboutFragment extends Fragment {
private AboutListener mListener;
private Toolbar toolbar;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setRetainInstance(true);
this.setHasOptionsMenu(true);
}
// @Override
// public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// Log.e("Menu:created","Menu");
//
//// super.onCreateOptionsMenu(menu, inflater);
//// menu.clear();
// inflater.inflate(R.menu.menu_post, menu);
// super.onCreateOptionsMenu(menu, inflater);
// }
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Log.e("Menu:selected","Menu");
if (item.getItemId() == android.R.id.home) {
mListener.onHomePressed();
}
return false;
}
public AboutFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.about_layout, container, false);
toolbar = (Toolbar) rootView.findViewById(R.id.toolbar);
((MainActivity) getActivity()).setSupportActionBar(toolbar);
((MainActivity) getActivity()).getSupportActionBar().setHomeButtonEnabled(true);
((MainActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
((MainActivity) getActivity()).getSupportActionBar().setTitle( "www.Jiasaz.com");
Log.e("Menu: fragment created","onCreaate()");
return rootView;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mListener = (AboutListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement AboutListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface AboutListener {
void onHomePressed();
//void onInfoSelected();
}
}
package me.declangao.jiasazsales.app;
导入android.app.Activity;
导入android.os.Bundle;
导入android.support.v4.app.Fragment;
导入android.support.v4.app.FragmentTransaction;
导入android.support.v7.widget.Toolbar;
导入android.util.Log;
导入android.view.LayoutInflater;
导入android.view.Menu;
导入android.view.MenuInflater;
导入android.view.MenuItem;
导入android.view.view;
导入android.view.ViewGroup;
进口me.declangao.jiasazsales.R;
/**
*片段以显示有关Jiasaz公司的信息。
*包含此片段的活动必须实现
*{@link AboutFragment.AboutListener}接口
*处理交互事件。
*/
公共类AboutFragment扩展了Fragment{
关于Listener mListener的私人信息;
专用工具栏;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
此.setRetainInstance(真);
此.sethasOptions菜单(true);
}
//@覆盖
//创建选项菜单(菜单菜单,菜单充气机){
//Log.e(“菜单:已创建”、“菜单”);
//
////super.onCreateOptions菜单(菜单,充气机);
////menu.clear();
//充气机。充气(右菜单。菜单栏,菜单栏);
//super.onCreateOptions菜单(菜单,充气机);
// }
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
Log.e(“菜单:已选择”、“菜单”);
if(item.getItemId()==android.R.id.home){
mListener.onHomePressed();
}
返回false;
}
公众关于碎片(){
//必需的空公共构造函数
}
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
//为该碎片膨胀布局
视图根视图=充气机。充气(R.layout.about_布局,容器,false);
toolbar=(toolbar)rootView.findviewbyd(R.id.toolbar);
((MainActivity)getActivity()).setSupportActionBar(工具栏);
((MainActivity)getActivity()).getSupportActionBar().setHomeButtonEnabled(true);
((MainActivity)getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
((MainActivity)getActivity()).getSupportActionBar().setTitle(“www.Jiasaz.com”);
e(“菜单:创建的片段”,“oncreate()”);
返回rootView;
}
@凌驾
公共事务主任(活动){
超级转速计(活动);
试一试{
mListener=(AboutListener)活动;
}catch(ClassCastException e){
抛出新的ClassCastException(activity.toString()
+“必须实施AboutListener”);
}
}
@凌驾
公共无效连接(){
super.onDetach();
mListener=null;
}
/**
*此接口必须由包含以下内容的活动实现
*片段,以允许通信此片段中的交互
*该活动以及其中可能包含的其他片段
*活动。
*
*有关更多信息,请参阅Android培训课程。
*/
关于Listener的公共接口{
void onHomePressed();
//void oninfo selected();
}
}
这是我的AboutFragment xml代码
package me.declangao.jiasazsales.app;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import me.declangao.jiasazsales.R;
import me.declangao.jiasazsales.model.Post;
public class MainActivity extends AppCompatActivity implements
RecyclerViewFragment.PostListListener, PostFragment.PostListener,
TabLayoutFragment.TabLayoutListener, SearchResultFragment.SearchResultListener,
CommentFragment.CommentListener,AboutFragment.AboutListener {
private static final String TAG = MainActivity.class.getSimpleName();
public static final String TAB_LAYOUT_FRAGMENT_TAG = "TabLayoutFragment";
public static final String POST_FRAGMENT_TAG = "PostFragment";
public static final String COMMENT_FRAGMENT_TAG = "CommentFragment";
public static final String ABOUT_FRAGMENT_TAG = "AboutFragment";
private FragmentManager fm = null;
private TabLayoutFragment tlf;
private PostFragment pf;
private CommentFragment cf;
private SearchResultFragment srf;
private AboutFragment abf;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
fm = getSupportFragmentManager();
// Setup fragments
tlf = new TabLayoutFragment();
pf = new PostFragment();
cf = new CommentFragment();
srf = new SearchResultFragment();
abf=new AboutFragment();
FragmentTransaction ft = fm.beginTransaction();
ft.add(android.R.id.content, abf, ABOUT_FRAGMENT_TAG);
ft.add(android.R.id.content, pf, POST_FRAGMENT_TAG);
ft.add(android.R.id.content, cf, COMMENT_FRAGMENT_TAG);
ft.add(android.R.id.content, tlf, TAB_LAYOUT_FRAGMENT_TAG);
ft.hide(pf);
ft.hide(cf);
ft.hide(abf);
ft.show(tlf);
ft.commit();
}
/**
* Invoked when a post in the list is selected
*
* @param post Selected Post object
*/
@Override
public void onPostSelected(Post post, boolean isSearch) {
// Find the fragment in order to set it up later
pf = (PostFragment) getSupportFragmentManager().findFragmentByTag(POST_FRAGMENT_TAG);
// Set necessary arguments
Bundle args = new Bundle();
args.putInt("id", post.getId());
args.putString("title", post.getTitle());
args.putString("date", post.getDate());
args.putString("author", post.getAuthor());
args.putString("content", post.getContent());
args.putString("url", post.getUrl());
//args.putString("thumbnailUrl", post.getThumbnailUrl());
args.putString("featuredImage", post.getFeaturedImageUrl());
// Configure PostFragment to display the right post
pf.setUIArguments(args);
// Show the fragment
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right,
android.R.anim.slide_in_left, android.R.anim.slide_out_right);
if (!isSearch) { // Hide TabLayoutFragment if this is not search result
ft.hide(tlf);
} else { // Otherwise, hide the search result, ie. SearchResultFragment.
ft.hide(srf);
}
ft.show(pf);
ft.addToBackStack(null);
ft.commit();
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
//do something here like
Log.e("menu Test","rom Main activity");
int backStackEntryCount
=getSupportFragmentManager().getBackStackEntryCount();
if (backStackEntryCount > 0) {
getSupportFragmentManager().popBackStack();
}
return true;
}
return false;
}
/**
* Invoked when a search query is submitted
*
* @param query Selected Post object
*/
@Override
public void onSearchSubmitted(String query) {
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right,
android.R.anim.slide_in_left, android.R.anim.slide_out_right);
// Send query to fragment using factory method
srf = SearchResultFragment.newInstance(query);
ft.add(android.R.id.content, srf);
ft.hide(tlf);
ft.addToBackStack(null);
ft.commit();
}
@Override
public void onInfoSelected() {
abf = (AboutFragment) getSupportFragmentManager().findFragmentByTag(ABOUT_FRAGMENT_TAG);
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right,
android.R.anim.slide_in_left, android.R.anim.slide_out_right);
// ft.hide(pf);
//ft.hide(cf);
ft.hide(tlf);
ft.show(abf);
ft.addToBackStack(null);
ft.commit();
}
/**
* Invoked when comment menu is selected
*
* @param id ID of the article, assigned by WordPress
*/
@Override
public void onCommentSelected(int id) {
cf = (CommentFragment) getSupportFragmentManager().findFragmentByTag(COMMENT_FRAGMENT_TAG);
Bundle args = new Bundle();
args.putInt("id", id);
// Setup CommentFragment to display the right comments page
cf.setUIArguments(args);
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right,
android.R.anim.slide_in_left, android.R.anim.slide_out_right);
ft.hide(pf);
//ft.hide(abf);
ft.show(cf);
ft.addToBackStack(null);
ft.commit();
}
/**
* Intercept back button event, reset ActionBar if necessary
*/
@Override
public void onBackPressed() {
resetActionBarIfApplicable();
super.onBackPressed();
}
/**
* Simulate a back button press when home is selected
*/
@Override
public void onHomePressed() {
resetActionBarIfApplicable();
fm.popBackStack();
}
/**
* Reset TabLayoutFragment's ActionBar if necessary
*/
private void resetActionBarIfApplicable() {
Log.d(TAG, "SearchResultFragment is visible: " + srf.isHidden());
if (srf.isVisible()) {
tlf.resetActionBar();
}
}
// Commented out coz we will let fragments handle their own Options Menus
/*
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
//Log.e("Erroraaa","aaaaa");
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Log.e("menu","activity: action home has clicked");
switch (item.getItemId()){
case android.R.id.home:
onBackPressed();
return false;
}
return super.onOptionsItemSelected(item);
}
*/
}
<FrameLayout 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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorAccent"
android:layoutDirection="rtl"
android:textDirection="rtl"
tools:context="me.declangao.jiasazsales.app.AboutFragment">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layoutDirection="rtl"
android:textDirection="rtl"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/colorPrimary"
android:theme="@style/ThemeOverlay.AppCompat.Dark"
android:layoutDirection="rtl"
android:textDirection="rtl"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layoutDirection="rtl"
android:textDirection="rtl"
android:padding="15dp"
android:orientation="vertical">
<TextView
android:id="@+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginBottom="10dp"
android:text="ئهم ئاپه لهلایهن كۆمپانیای جیاساز دروست كراوه"
android:textAppearance="@style/TextAppearance.AppCompat.Light.SearchResult.Title" />
<ImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="214dp"
android:src="@drawable/jiasazlogo" />
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginBottom="10dp"
android:text="كۆمپانیای جیاساز بۆ خزمهتگوزاری و چارهسهری تهكنهلۆجی، دروستكردنی وێبسایت و ئاپی مۆبایل و سیستهمی دام و دهزگاكان و ماركێتهكان"
android:textAppearance="@style/TextAppearance.AppCompat.Light.SearchResult.Title" />
<TextView
android:id="@+id/textView3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="all"
android:clickable="true"
android:text="@string/link"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
android:textSize="18sp" />
</LinearLayout>
</LinearLayout>
</FrameLayout>
第一个原因是您没有正确地实现onCreateOptions菜单()
和onOptions ItemSelected()
@覆盖活动中的方法
,因此取消了活动
中的注释,这样活动
也可以调用它们各自的超级
方法
第二个原因是您的onCreateOptions菜单()
代码被注释了,这需要而不是。重要的是supersuper.onCreateOptions菜单(菜单,充气机)必须调用code>来绘制片段的菜单
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
}
并将Fragment
中的选项ItemSelected()
更改为:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Log.e("Menu:selected","Menu");
if (item.getItemId() == android.R.id.home) {
mListener.onHomePressed();
return true;
}else{
return super.onOptionsItemSelected(item);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return super.onOptionsItemSelected(item);
}
现在在活动中
将您的onCreateOptions菜单()更改为:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Log.e("Menu:selected","Menu");
if (item.getItemId() == android.R.id.home) {
mListener.onHomePressed();
return true;
}else{
return super.onOptionsItemSelected(item);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return super.onOptionsItemSelected(item);
}
和onOptionsItemSelected()
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Log.e("Menu:selected","Menu");
if (item.getItemId() == android.R.id.home) {
mListener.onHomePressed();
return true;
}else{
return super.onOptionsItemSelected(item);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return super.onOptionsItemSelected(item);
}
您正确地描述了一切,这些都是平台的局限性。要解决此问题,您需要使用onOptions ItemSelected()
在MainActivity中,插入已在其他方法中使用的代码:
abf = (AboutFragment) getSupportFragmentManager().findFragmentByTag(ABOUT_FRAGMENT_TAG);
然后,当您拥有片段时,您可以从片段中调用一些方法,并可能获得返回值,以了解是否处理了背部,以及是否需要执行更多操作…您可以在片段类中使用onPrepareOptionsMenu(Menu Menu)
来侦听操作栏菜单
@Override
public void onPrepareOptionsMenu(Menu menu)
{
super.onPrepareOptionsMenu(menu);
// to get an item of menu from action bar you can do it like...
// this below line will find an item of menu with id action_search...
MenuItem searchMenuItem = menu.findItem(R.id.action_search);
// like this you can find other menu items
// another example is
MenuItem infoMenuItem = menu.findItem(R.id.action_info);
}
我正在使用中的搜索视图