每当我点击表单中的空白区域（.search-form作为整个表单的类）时，这都有效。
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dapl.stockup/com.dapl.stockup.activity.MapsActivity}: android.view.InflateException: Binary XML file line #70: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2332)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2394)
at android.app.ActivityThread.access$800(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1308)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5276)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:911)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:706)
Caused by: android.view.InflateException: Binary XML file line #70: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:767)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:810)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:813)
at android.view.LayoutInflater.inflate(LayoutInflater.java:508)
at android.view.LayoutInflater.inflate(LayoutInflater.java:418)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:378)
at android.app.Activity.setContentView(Activity.java:2158)
at com.dapl.stockup.activity.MapsActivity.onCreate(MapsActivity.java:50)
at android.app.Activity.performCreate(Activity.java:6041)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1109)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2285)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2394)
at android.app.ActivityThread.access$800(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1308)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5276)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:911)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:706)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Configuration android.content.res.Resources.getConfiguration()' on a null object reference
at android.view.SurfaceView.init(SurfaceView.java:231)
at android.view.SurfaceView.<init>(SurfaceView.java:193)
at maps.V.x.<init>(Unknown Source)
at maps.V.v.<init>(Unknown Source)
at maps.D.u.<init>(Unknown Source)
at maps.D.u.a(Unknown Source)
at maps.ad.ae.a(Unknown Source)
at maps.ad.t.a(Unknown Source)
at maps.ad.M.a(Unknown Source)
at wd.onTransact(:com.google.android.gms.DynamiteModulesB:107)
at android.os.Binder.transact(Binder.java:380)
at com.google.android.gms.maps.internal.IMapFragmentDelegate$zza$zza.onCreateView(Unknown Source)
at com.google.android.gms.maps.SupportMapFragment$zza.onCreateView(Unknown Source)
at com.google.android.gms.dynamic.zza$4.zzb(Unknown Source)
at com.google.android.gms.dynamic.zza.zza(Unknown Source)
at com.google.android.gms.dynamic.zza.onCreateView(Unknown Source)
at com.google.android.gms.maps.SupportMapFragment.onCreateView(Unknown Source)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2080)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1065)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1268)
at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1370)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2415)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:376)
at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:33)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:75)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:737)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:810)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:813)
at android.view.LayoutInflater.inflate(LayoutInflater.java:508)
at android.view.LayoutInflater.inflate(LayoutInflater.java:418)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:378)
at android.app.Activity.setContentView(Activity.java:2158)
at com.dapl.stockup.activity.MapsActivity.onCreate(MapsActivity.java:50)
at android.app.Activity.performCreate(Activity.java:6041)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1109)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2285)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2394)
at android.app.ActivityThread.access$800(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1308)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5276)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:911)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:706)
但是当我使用完全相同的代码而不是＆＃39; .search-form＆＃39;时它不起作用。然后由我所有单选按钮的类改变。
我怎样才能做到这样做＆＃34; DO SOMETHING＆＃34;只要点击（或未点击）所有单选按钮都可以使用。它应该是一个过滤系统，带有单选按钮，实时更新数据库中有多少结果。
答案 0 :(得分：0)
Firefox浏览器不支持MouseDown。
https://developer.mozilla.org/fr/docs/Web/Events/mousedown
addEventListener只能用于元素，而不能用于元素组。
尝试这样的事情：
var form = document.getElementById('search-form');
[].forEach.call(form.childNodes, function(item, iterator){
item.addEventListener('mousedown', function(e){
//DO Something
alert('click');
});
});