我正在Android Studio中构建名为Ping的应用。到目前为止，我的活动是LoginActivity ProfileActivity和Timeline。我的问题是布局中与时间轴活动相对应的按钮有一个onClick方法，该方法不起作用。单击该按钮时，模拟器会给出＆＃34; Unfortunatley，Ping已停止。＆＃34;我定义按钮和onClick方法的方式与其功能正常的其他按钮相同，只是这个按钮似乎不起作用。我收到错误消息称该方法无法找到，但我已将该方法写入相应的活动中。这是logcat：
04-30 10:40:08.727 2075-2075/com.ping_social.www.ping E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.ping_social.www.ping, PID: 2075
java.lang.IllegalStateException: Could not find a method onProfilePress(View) in the activity class android.view.ContextThemeWrapper for onClick handler on view class android.widget.Button with id 'profileButton'
at android.view.View$1.onClick(View.java:4007)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
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:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.NoSuchMethodException: onProfilePress [class android.view.View]
at java.lang.Class.getMethod(Class.java:664)
at java.lang.Class.getMethod(Class.java:643)
at android.view.View$1.onClick(View.java:4000)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
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:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
这是我的时间轴活动类：
package com.ping_social.www.ping;
import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
public class TimeLine extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_time_line);
/*print log that shows we've got here*/
Log.i("LoginActivity", "Layout has been set");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_time_line, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/*called when user presses the Log in button*/
public void onProfilePress(View view){
/*Log the button press*/
Log.i("TimeLine", "Has reached the onProfilePress method");
Intent intent = new Intent(this, ProfileActivity.class);
startActivity(intent);
}
}
这是我的时间轴布局xml代码：
<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" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:theme="@style/GeneralTheme"
tools:context="com.ping_social.www.ping.TimeLine">
<TextView android:text="@string/no_pings" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="30sp"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:textIsSelectable="false"
android:textColor="@color/PING_TOP_BAR_RED"
android:id="@+id/textView4" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/timeline_button"
android:id="@+id/timelineButton"
android:textColor="@color/PING_TOP_BAR_RED"
android:layout_weight="1"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/new_ping_button"
android:id="@+id/newPingButton"
android:layout_weight="1"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/activity_button"
android:id="@+id/activityButton"
android:layout_weight="1"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/profile_button"
android:id="@+id/profileButton"
android:layout_weight="1"
android:onClick="onProfilePress"/>
</LinearLayout>
</RelativeLayout>
我非常肯定没有拼写问题，并且也没有其他按钮共享相同的ID或共享相同名称的方法。被困在这几天，非常感谢任何帮助！