我刚刚设置了一个onClick方法,该方法写在activity类中,只要单击该按钮就会被调用.即使在它进入方法之前,应用程序崩溃了.
单击浮动操作按钮时出现的错误消息;
java.lang.IllegalArgumentException: Expected receiver of type com.example.bob.vexteamqueuing.AdminControl,but got android.support.v7.view.ContextThemeWrapper java.lang.IllegalArgumentException: Expected receiver of type com.example.bob.vexteamqueuing.AdminControl,but got android.support.v7.view.ContextThemeWrapper at java.lang.reflect.Method.invoke(Native Method) at android.view.View$DeclaredOnClickListener.onClick(View.java:4447) at android.view.View.performClick(View.java:5198) at android.view.View$PerformClick.run(View.java:21147) 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:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
活动的XML代码：
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/NoActionBar">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay"
/>
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_admin_control" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
android:src="@android:drawable/ic_input_add"
android:onClick="createNewTournament"
android:clickable="true" />
AdminControl活动Java代码：
public class AdminControl extends AppCompatActivity {
Firebase ref;
public static List <Tournament> tournaments;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_admin_control);
Toolbar b = (Toolbar) findViewById(R.id.toolbar);
b.setTitle("Tournaments");
setSupportActionBar(b);
ref = AdminLogin.firebase.child("users").child(AdminLogin.firebase.getAuth().getUid());
if (tournaments == null){
tournaments = new ArrayList<>();
}
}
public void createNewTournament(View v) {
Intent newIntent = new Intent(this,TournamentCreator.class);
startActivity(newIntent);
}
}
在创建 – 锦标赛创作者
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tournament_creator);
/*b = (FloatingActionButton) findViewById(R.id.fab);
b.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
beginTournament(v);
}
});*/
}
清单文件 – 可能没有必要,只是提供
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.INTERNET" />
<!-- To auto-complete the email text field in the login form with the user's emails -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<application
android:name=".VEXQueuing"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".Initial">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".AdminLogin"
android:label="@string/title_activity_admin_login"
android:parentActivityName=".Initial">
<Meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.bob.vexteamqueuing.Initial" />
</activity>
<activity android:name=".TournamentCreator" />
<activity
android:name=".AdminControl"
android:label="@string/title_activity_admin_control"
android:parentActivityName=".Initial"
android:theme="@style/NoActionBar">
<Meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.bob.vexteamqueuing.Initial" />
</activity>
</application>
解决方法
你的问题应该解决从你的布局中删除你的android：onClick =“createNewTournament”事件
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
android:src="@android:drawable/ic_input_add"
android:clickable="true" />
并在你的onCreate中为R.id.fab添加一个监听器,就像这样.
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_admin_control);
Toolbar b = (Toolbar) findViewById(R.id.toolbar);
b.setTitle("Tournaments");
setSupportActionBar(b);
ref = AdminLogin.firebase.child("users").child(AdminLogin.firebase.getAuth().getUid());
if (tournaments == null){
tournaments = new ArrayList<>();
}
FloatingActionButton myFab = (FloatingActionButton)findViewById(R.id.fab);
myFab.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
createNewTournament(v);
}
});
}
在这个问题EditText OnClick Exception中发生同样的问题,并使用监听器修复.
希望这可以帮助！！
