Whenever I assign the android: onClick attribute to an AutoCompleteTextView, my application crashes immediately after the activity loads. I tested AutoCompleteTextView without assigning the onClick method, and it seems to work just fine, like assigning onClick to other views (including EditText, Spinners, TextViews, Buttons and ImageButtons). I managed to narrow the error to line 24 (setContentView (R.layout.activity_main)). Can anyone shed some light on this?
MainActivity.java
package com.example.matt.testapp; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; public class MainActivity extends AppCompatActivity { public AutoCompleteTextView actv; public String[] continents = {"North America", "South America", "Antarctica", "Europe", "Africa", "Asia", "Australia" }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); actv = (AutoCompleteTextView) findViewById(R.id.actv); ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, continents); actv.setAdapter(adapter); } public void actvClick (View view) {} }
activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="match_parent" android:layout_width="match_parent" > <AutoCompleteTextView android:id="@+id/actv" android:layout_width="match_parent" android:layout_height="wrap_content" android:onClick="actvClick" > </AutoCompleteTextView> </LinearLayout>
Logcat
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.matt.testapp/com.example.matt.testapp.MainActivity}: android.view.InflateException: Binary XML file line #7: Binary XML file line #7: Error inflating class AutoCompleteTextView at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892) at android.app.ActivityThread.-wrap11(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593) at android.os.Handler.dispatchMessage(Handler.java:105) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6541) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) Caused by: android.view.InflateException: Binary XML file line #7: Binary XML file line #7: Error inflating class AutoCompleteTextView Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class AutoCompleteTextView Caused by: java.lang.NullPointerException: Attempt to write to field 'android.view.View$OnClickListener android.widget.AutoCompleteTextView$PassThroughClickListener.mWrapped' on a null object reference at android.widget.AutoCompleteTextView$PassThroughClickListener.-set0(Unknown Source:0) at android.widget.AutoCompleteTextView.setOnClickListener(AutoCompleteTextView.java:307) at android.view.View.<init>(View.java:5008) at android.widget.TextView.<init>(TextView.java:824) at android.widget.EditText.<init>(EditText.java:88) at android.widget.AutoCompleteTextView.<init>(AutoCompleteTextView.java:220) at android.widget.AutoCompleteTextView.<init>(AutoCompleteTextView.java:193) at android.widget.AutoCompleteTextView.<init>(AutoCompleteTextView.java:172) at android.support.v7.widget.AppCompatAutoCompleteTextView.<init>(AppCompatAutoCompleteTextView.java:68) at android.support.v7.widget.AppCompatAutoCompleteTextView.<init>(AppCompatAutoCompleteTextView.java:64) at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:130) at android.support.v7.app.AppCompatDelegateImplV9.createView(AppCompatDelegateImplV9.java:1026) at android.support.v7.app.AppCompatDelegateImplV9.onCreateView(AppCompatDelegateImplV9.java:1083) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:772) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730) at android.view.LayoutInflater.rInflate(LayoutInflater.java:863) at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824) at android.view.LayoutInflater.inflate(LayoutInflater.java:515) at android.view.LayoutInflater.inflate(LayoutInflater.java:423) at android.view.LayoutInflater.inflate(LayoutInflater.java:374) at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:289) at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) at com.example.matt.testapp.MainActivity.onCreate(MainActivity.java:24) at android.app.Activity.performCreate(Activity.java:6975) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892) at android.app.ActivityThread.-wrap11(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593) at android.os.Handler.dispatchMessage(Handler.java:105) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6541) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
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