我已经开始学习本周的代码了。我一直在关注向Google日历添加事件的教程,我遇到了无法找到方法的问题。错误是:Android onClick事件找不到方法
找不到方法onAddEventClicked(查看)中的Android父母或祖先上下文:onclick属性上定义视图类android.support.v7.widget.AppCompatButton ID为“addEventButton”
这是我的代码:
package com.example.user.plannerv2;
import android.support.v7.app.AppCompatActivity;
import android.content.Intent;
import android.provider.CalendarContract;
import android.os.Bundle;
import java.util.Calendar;
import android.provider.CalendarContract.Events;
import android.view.View;
public class sub_page01 extends AppCompatActivity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_sub_page01);
}
public void onAddEventClicked(View view) {
Intent intent = new Intent(Intent.ACTION_INSERT);
intent.setType("vnd.android.cursor.item/event");
Calendar cal = Calendar.getInstance();
long startTime = cal.getTimeInMillis();
long endTime = cal.getTimeInMillis() + 60 * 60 * 1000;
intent.putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, startTime);
intent.putExtra(CalendarContract.EXTRA_EVENT_END_TIME,endTime);
intent.putExtra(CalendarContract.EXTRA_EVENT_ALL_DAY, true);
intent.putExtra(Events.TITLE, "Customer Cabin");
intent.putExtra(Events.DESCRIPTION, "Cabin is leased out");
intent.putExtra(Events.EVENT_LOCATION, "Cabin");
startActivity(intent);
}
}
这里是我的XML;
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/addEventButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="onAddEventClicked"
android:text="Add Event" />
</RelativeLayout>
这是我得到的错误:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.user.plannerv2, PID: 16127
java.lang.IllegalStateException: Could not find method onAddEventClicked(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatButton with id 'addEventButton'
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod(AppCompatViewInflater.java:327)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:284)
at android.view.View.performClick(View.java:6207)
at android.widget.TextView.performClick(TextView.java:11094)
at android.view.View$PerformClick.run(View.java:23639)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6688)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)
正如我已经说过,我不是100%肯定,我觉得该方法被调用。任何帮助都会很棒。
您已经加载'R.layout.fragment_sub_page01'到一些其他类......除此之外,你为什么加载* *片段**布局到一个活动?尝试命名您的资源更好 –