当我加载模拟器并单击我制作的按钮时,我不断收到此错误
03-14 15:47:37.096: E/AndroidRuntime(281): at dalvik.system.NativeStart.main(Native Method)
那么body可以解释这个错误的含义吗
android:id="@+id/Linear Layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/Login_Button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin Top="14dp"
android:on Click="Login_on Click"
android:text="My Training Plan" />
<Button
android:id="@+id/Workouts_Button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:on Click="Workouts_Button_on Click"
android:text="Offensive Workouts" />
<Button
android:id="@+id/Defensive_workouts"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:on Click="Defensive_workouts_on Click"
android:text="Defensive Workouts" />
<Button
android:id="@+id/Shot_Tracker_Button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:on Click="Shot_Tracker_Button_on Click"
android:text="Shot Tracker"/>
<Button
android:id="@+id/About_Basketball_App_Button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin Top="163dp"
android:on Click="About_Basketball_App_Button_on Click"
android:text="About Basketball App" />
<Button
android:id="@+id/contact Basketball app_Button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:on click="contact Basketball app_on Click"
android:text="Contact Basketball app" />
<