如何让菜单项响应命令？
How to get menu items to respond to commands?
我在操作栏上有我的菜单，但最近切换到一个更可自定义的工具栏，并在那里添加了相同的菜单。当菜单附加到操作栏时，菜单中的后退、前进和共享项目工作正常，但现在它们在工具栏上根本不起作用。菜单下拉并完美显示项目，但它们没有响应，只是在单击时关闭菜单，而不是执行所需的操作并关闭菜单。我修改了代码并尝试了几种不同的方法，但没有任何效果。关于如何使它正常工作，有什么想法吗？
这是在主要操作栏上工作的代码 java:
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setSubtitle("Test Subtititle");
toolbar.inflateMenu(R.menu.my_menu);
}
@Override
public boolean onCreateOptionsMenu (Menu menu){
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.my_menu, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected (MenuItem item){
switch (item.getItemId()) {
case R.id.menu_back:
onBackPressed();
break;
case R.id.menu_forward:
onForwardPressed();
break;
case R.id.menu_share:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, myCurrentUrl);
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Copied URL");
startActivity(Intent.createChooser(shareIntent, "Share..."));
}
return super.onOptionsItemSelected(item);
}
private void onForwardPressed () {
if (SearchWebAddress.canGoForward()) {
SearchWebAddress.goForward();
} else {
Toast.makeText(this, "Can't go forward!", Toast.LENGTH_SHORT).show();
}
}
这是我试过的其他方法
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setSubtitle("Test Subtititle");
toolbar.inflateMenu(R.menu.my_menu);
}
@Override
public boolean onCreateOptionsMenu (Menu menu){
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.my_menu, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected (MenuItem item){
switch (item.getItemId()) {
case R.id.menu_back:
onBackPressed();
return true;
case R.id.menu_forward:
onForwardPressed();
return true;
case R.id.menu_share:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, myCurrentUrl);
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Copied URL");
startActivity(Intent.createChooser(shareIntent, "Share..."));
default:
return super.onOptionsItemSelected(item);
}
}
private void onForwardPressed () {
if (SearchWebAddress.canGoForward()) {
SearchWebAddress.goForward();
} else {
Toast.makeText(this, "Can't go forward!", Toast.LENGTH_SHORT).show();
}
}
这是主要的xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/mylayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true"
tools:context="com.gmail55cyrjj.machvelocitybrowser30.UrlSearch">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="67dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="-2dp"
android:layout_marginTop="0dp"
android:layout_marginBottom="662dp"
android:background="#DD000000"
android:fitsSystemWindows="true"
android:minHeight="?attr/actionBarSize"
app:titleTextColor="@android:color/white" />
<Button
android:id="@+id/go"
android:layout_width="58dp"
android:layout_height="36dp"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginTop="15dp"
android:layout_marginEnd="48dp"
android:layout_marginRight="48dp"
android:background="#8E24AA"
android:text="Go!"
android:textSize="16sp" />
<Button
android:id="@+id/home_button"
android:layout_width="63dp"
android:layout_height="36dp"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginTop="691dp"
android:layout_marginEnd="170dp"
android:layout_marginRight="170dp"
android:background="@drawable/ic_home_black_18dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.v7.widget.AppCompatEditText
android:id="@+id/input_search_url"
android:layout_width="303dp"
android:layout_height="35dp"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginStart="11dp"
android:layout_marginLeft="11dp"
android:layout_marginTop="16dp"
android:layout_marginBottom="8dp"
android:autofillHints=""
android:background="#0000D1"
android:ems="10"
android:gravity="start|center"
android:hint="Search or Enter Url"
android:importantForAutofill="auto"
android:inputType="textUri"
android:selectAllOnFocus="true"
android:textColorHighlight="#39ff14"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="@+id/home_button"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="@+id/textProgress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginTop="-32dp"
android:layout_marginEnd="405dp"
android:layout_marginRight="405dp"
android:linksClickable="true"
android:longClickable="true"
android:scrollHorizontally="true"
android:textSize="24sp"
android:visibility="invisible" />
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipe"
android:layout_width="match_parent"
android:layout_height="644dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="-1dp"
android:layout_marginTop="62dp">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="640dp"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginStart="0dp"
android:layout_marginLeft="0dp"
android:layout_marginTop="51dp"
android:forceHasOverlappingRendering="true"
android:linksClickable="true"
android:longClickable="true"
android:scrollHorizontally="true" />
</android.support.v4.widget.SwipeRefreshLayout>
<android.support.v7.widget.Toolbar
android:id="@+id/the_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/webView"
android:layout_alignBottom="@+id/home_button"
android:layout_alignParentStart="true"
android:layout_marginStart="-5dp"
android:layout_marginTop="57dp"
android:layout_marginBottom="-4dp"
android:background="#ffbb00"
android:minHeight="?attr/actionBarSize">
</android.support.v7.widget.Toolbar>
<ProgressBar
android:id="@+id/anotherProgressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="0dp"
android:layout_marginTop="53dp" />
</RelativeLayout>
这是xml
中的菜单
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/menu_back"
android:icon="@drawable/ic_keyboard_arrow_left_black_24dp"
app:showAsAction="never"
android:title="Back" />
<item
android:id="@+id/menu_forward"
android:icon="@drawable/ic_keyboard_arrow_right_black_24dp"
android:title="Forward" />
<item
android:id="@+id/menu_share"
app:showAsAction="never"
android:icon="@drawable/ic_share_black_24dp"
android:title="Share" />
<item android:title="Item" />
</menu>
onCreateOptionsMenu() 和 onOptionsItemSelected() 仅与操作栏菜单关联。如果您单独使用 Toolbar，那么您可以使用 inflateMenu() 创建菜单（就像您已经做的那样），并且您需要添加一个 Toolbar.OnMenuItemClickListener 来处理点击事件：
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setSubtitle("Test Subtititle");
toolbar.inflateMenu(R.menu.my_menu);
toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item){
switch (item.getItemId()) {
case R.id.menu_back:
onBackPressed();
return true;
case R.id.menu_forward:
onForwardPressed();
return true;
case R.id.menu_share:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, myCurrentUrl);
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Copied URL");
startActivity(Intent.createChooser(shareIntent, "Share..."));
return true;
default:
return false;
}
}
});
我在操作栏上有我的菜单，但最近切换到一个更可自定义的工具栏，并在那里添加了相同的菜单。当菜单附加到操作栏时，菜单中的后退、前进和共享项目工作正常，但现在它们在工具栏上根本不起作用。菜单下拉并完美显示项目，但它们没有响应，只是在单击时关闭菜单，而不是执行所需的操作并关闭菜单。我修改了代码并尝试了几种不同的方法，但没有任何效果。关于如何使它正常工作，有什么想法吗？
这是在主要操作栏上工作的代码 java:
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setSubtitle("Test Subtititle");
toolbar.inflateMenu(R.menu.my_menu);
}
@Override
public boolean onCreateOptionsMenu (Menu menu){
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.my_menu, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected (MenuItem item){
switch (item.getItemId()) {
case R.id.menu_back:
onBackPressed();
break;
case R.id.menu_forward:
onForwardPressed();
break;
case R.id.menu_share:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, myCurrentUrl);
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Copied URL");
startActivity(Intent.createChooser(shareIntent, "Share..."));
}
return super.onOptionsItemSelected(item);
}
private void onForwardPressed () {
if (SearchWebAddress.canGoForward()) {
SearchWebAddress.goForward();
} else {
Toast.makeText(this, "Can't go forward!", Toast.LENGTH_SHORT).show();
}
}
这是我试过的其他方法
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setSubtitle("Test Subtititle");
toolbar.inflateMenu(R.menu.my_menu);
}
@Override
public boolean onCreateOptionsMenu (Menu menu){
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.my_menu, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected (MenuItem item){
switch (item.getItemId()) {
case R.id.menu_back:
onBackPressed();
return true;
case R.id.menu_forward:
onForwardPressed();
return true;
case R.id.menu_share:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, myCurrentUrl);
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Copied URL");
startActivity(Intent.createChooser(shareIntent, "Share..."));
default:
return super.onOptionsItemSelected(item);
}
}
private void onForwardPressed () {
if (SearchWebAddress.canGoForward()) {
SearchWebAddress.goForward();
} else {
Toast.makeText(this, "Can't go forward!", Toast.LENGTH_SHORT).show();
}
}
这是主要的xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/mylayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true"
tools:context="com.gmail55cyrjj.machvelocitybrowser30.UrlSearch">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="67dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="-2dp"
android:layout_marginTop="0dp"
android:layout_marginBottom="662dp"
android:background="#DD000000"
android:fitsSystemWindows="true"
android:minHeight="?attr/actionBarSize"
app:titleTextColor="@android:color/white" />
<Button
android:id="@+id/go"
android:layout_width="58dp"
android:layout_height="36dp"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginTop="15dp"
android:layout_marginEnd="48dp"
android:layout_marginRight="48dp"
android:background="#8E24AA"
android:text="Go!"
android:textSize="16sp" />
<Button
android:id="@+id/home_button"
android:layout_width="63dp"
android:layout_height="36dp"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginTop="691dp"
android:layout_marginEnd="170dp"
android:layout_marginRight="170dp"
android:background="@drawable/ic_home_black_18dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.v7.widget.AppCompatEditText
android:id="@+id/input_search_url"
android:layout_width="303dp"
android:layout_height="35dp"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginStart="11dp"
android:layout_marginLeft="11dp"
android:layout_marginTop="16dp"
android:layout_marginBottom="8dp"
android:autofillHints=""
android:background="#0000D1"
android:ems="10"
android:gravity="start|center"
android:hint="Search or Enter Url"
android:importantForAutofill="auto"
android:inputType="textUri"
android:selectAllOnFocus="true"
android:textColorHighlight="#39ff14"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="@+id/home_button"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="@+id/textProgress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginTop="-32dp"
android:layout_marginEnd="405dp"
android:layout_marginRight="405dp"
android:linksClickable="true"
android:longClickable="true"
android:scrollHorizontally="true"
android:textSize="24sp"
android:visibility="invisible" />
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipe"
android:layout_width="match_parent"
android:layout_height="644dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="-1dp"
android:layout_marginTop="62dp">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="640dp"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginStart="0dp"
android:layout_marginLeft="0dp"
android:layout_marginTop="51dp"
android:forceHasOverlappingRendering="true"
android:linksClickable="true"
android:longClickable="true"
android:scrollHorizontally="true" />
</android.support.v4.widget.SwipeRefreshLayout>
<android.support.v7.widget.Toolbar
android:id="@+id/the_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/webView"
android:layout_alignBottom="@+id/home_button"
android:layout_alignParentStart="true"
android:layout_marginStart="-5dp"
android:layout_marginTop="57dp"
android:layout_marginBottom="-4dp"
android:background="#ffbb00"
android:minHeight="?attr/actionBarSize">
</android.support.v7.widget.Toolbar>
<ProgressBar
android:id="@+id/anotherProgressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="0dp"
android:layout_marginTop="53dp" />
</RelativeLayout>
这是xml
中的菜单 <?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/menu_back"
android:icon="@drawable/ic_keyboard_arrow_left_black_24dp"
app:showAsAction="never"
android:title="Back" />
<item
android:id="@+id/menu_forward"
android:icon="@drawable/ic_keyboard_arrow_right_black_24dp"
android:title="Forward" />
<item
android:id="@+id/menu_share"
app:showAsAction="never"
android:icon="@drawable/ic_share_black_24dp"
android:title="Share" />
<item android:title="Item" />
</menu>
onCreateOptionsMenu() 和 onOptionsItemSelected() 仅与操作栏菜单关联。如果您单独使用 Toolbar，那么您可以使用 inflateMenu() 创建菜单（就像您已经做的那样），并且您需要添加一个 Toolbar.OnMenuItemClickListener 来处理点击事件：
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setSubtitle("Test Subtititle");
toolbar.inflateMenu(R.menu.my_menu);
toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item){
switch (item.getItemId()) {
case R.id.menu_back:
onBackPressed();
return true;
case R.id.menu_forward:
onForwardPressed();
return true;
case R.id.menu_share:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, myCurrentUrl);
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Copied URL");
startActivity(Intent.createChooser(shareIntent, "Share..."));
return true;
default:
return false;
}
}
});