我以前成功创建了一个搜索项目并调用了.setOnActionExpandListener()，但是现在我收到了UnsupportedOperationException，并且不知道如何解决。 compileSDKVersion和targetSDKVersion之间的冲突可能与它有关，但我不确定。我读过其他SO帖子，指出它实际上是Google's support library中的错误，并且已得到修复，但是我无法确认。我最近更新了我正在使用的Android支持库，这也可能是导致该问题的原因，请参见以下详细信息：
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_search, menu);
// Retrieve the SearchView and plug it into SearchManager
SupportMenuItem searchItem = (SupportMenuItem) menu.findItem(R.id.search);
final SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
searchItem.setOnActionExpandListener(new MenuItem.OnActionExpandListener() {
@Override
public boolean onMenuItemActionExpand(MenuItem menuItem) {
Toast.makeText(getApplicationContext(), "OPEN", Toast.LENGTH_LONG).show();
return false;
}
@Override
public boolean onMenuItemActionCollapse(MenuItem menuItem) {
Toast.makeText(getApplicationContext(), "Close", Toast.LENGTH_LONG).show();
finish();
return false;
}
});
例外：
12-03 17:31:55.743 18797-18797/com.troychuinard.fanpolls E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.troychuinard.fanpolls, PID: 18797
java.lang.UnsupportedOperationException: This is not supported, use MenuItemCompat.setOnActionExpandListener()
at android.support.v7.view.menu.MenuItemImpl.setOnActionExpandListener(MenuItemImpl.java:743)
at com.troychuinard.fanpolls.NewImageActivity.onCreateOptionsMenu(NewImageActivity.java:90)
at android.app.Activity.onCreatePanelMenu(Activity.java:2881)
at android.support.v4.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:328)
at android.support.v7.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:98)
at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.onCreatePanelMenu(AppCompatDelegateImplBase.java:335)
at android.support.v7.app.AppCompatDelegateImplV9.preparePanel(AppCompatDelegateImplV9.java:1368)
at android.support.v7.app.AppCompatDelegateImplV9.doInvalidatePanelMenu(AppCompatDelegateImplV9.java:1648)
at android.support.v7.app.AppCompatDelegateImplV9$1.run(AppCompatDelegateImplV9.java:140)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5527)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
应用程式Gradle：
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion '26.0.2'
defaultConfig {
vectorDrawables.useSupportLibrary = true
applicationId "xxxxxxxx"
minSdkVersion 16
targetSdkVersion 25
versionCode 1
versionName "1.0"
multiDexEnabled true
}
dexOptions {
javaMaxHeapSize "2g"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
// Support library
compile "com.android.support:design:$supportLibVersion"
compile "com.android.support:cardview-v7:$supportLibVersion"
compile "com.android.support:support-v4:$supportLibVersion"
// Firebase
compile "com.google.firebase:firebase-storage:$playServicesVersion"
// compile 'com.github.SUPERCILEX.FirebaseUI-Android:firebase-ui-
database:e3c0feaddae3c7cc0fc7b3333bf3c4c11e4ae406'
compile "com.google.firebase:firebase-core:$playServicesVersion"
compile "com.google.firebase:firebase-auth:$playServicesVersion"
compile "com.google.android.gms:play-services-
auth:$playServicesVersion"
compile "com.google.firebase:firebase-database:$playServicesVersion"
compile "com.google.firebase:firebase-appindexing:$playServicesVersion"
// compile "com.google.firebase:firebase-
firestore:$playServicesVersion"
// compile 'com.firebaseui:firebase-ui-firestore:3.1.0'
compile 'com.firebaseui:firebase-ui-database:3.1.0'
// Third party
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.facebook.android:facebook-android-sdk:4.+'
compile 'jp.wasabeef:recyclerview-animators:2.2.3'
compile 'com.github.clans:fab:1.6.2'
compile 'de.hdodenhof:circleimageview:2.0.0'
compile 'com.jakewharton:butterknife:7.0.1'
compile 'com.squareup.picasso:picasso:2.5.2'
compile 'com.squareup.okhttp3:okhttp:3.1.2'
compile 'com.github.PhilJay:MPAndroidChart:v2.2.2'
compile 'com.google.code.gson:gson:2.6.2'
compile 'com.squareup.retrofit2:retrofit:2.1.0'
compile 'com.squareup.retrofit2:converter-gson:2.1.0'
compile 'com.squareup.okhttp3:logging-interceptor:3.3.0'
compile 'com.android.support:multidex:1.0.1'
}
apply plugin: 'com.google.gms.google-services'
根摇篮：
buildscript {
repositories {
jcenter()
maven {
url 'https://maven.google.com/'
name 'Google'
}
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.3'
classpath 'com.google.gms:google-services:3.1.0'
}
}
allprojects {
repositories {
jcenter()
maven { url 'https://maven.fabric.io/public' }
maven { url 'https://jitpack.io' }
maven { url "https://maven.google.com" }
maven {
url 'https://maven.google.com/'
name 'Google'
}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
ext {
supportLibVersion = "25.3.1"
playServicesVersion = "11.4.2"
}
最佳答案
错误日志很好地描述了异常原因：
不支持此功能，请使用MenuItemCompat.setOnActionExpandListener()
这意味着，而不是：
searchItem.setOnActionExpandListener(new MenuItem.OnActionExpandListener() {...});
你应该做：
MenuItemCompat.setOnActionExpandListener(searchItem, new MenuItemCompat.OnActionExpandListener() {...})