05-23 02:53:48.416: E/Trace(875): error opening trace file: No such file or directory (2)
05-23 02:53:52.545: E/AndroidRuntime(875): FATAL EXCEPTION: main
05-23 02:53:52.545: E/AndroidRuntime(875): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.intelsocket/com.example.intelsocket.MainActivity}: java.lang.ClassCastException: android.widget.RelativeLayout cannot be cast to android.widget.Button
05-23 02:53:52.545: E/AndroidRuntime(875): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
05-23 02:53:52.545: E/AndroidRuntime(875): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
05-23 02:53:52.545: E/AndroidRuntime(875): at android.app.ActivityThread.access$600(ActivityThread.java:141)
05-23 02:53:52.545: E/AndroidRuntime(875): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
05-23 02:53:52.545: E/AndroidRuntime(875): at android.os.Handler.dispatchMessage(Handler.java:99)
05-23 02:53:52.545: E/AndroidRuntime(875): at android.os.Looper.loop(Looper.java:137)
05-23 02:53:52.545: E/AndroidRuntime(875): at android.app.ActivityThread.main(ActivityThread.java:5041)
05-23 02:53:52.545: E/AndroidRuntime(875): at java.lang.reflect.Method.invokeNative(Native Method)
05-23 02:53:52.545: E/AndroidRuntime(875): at java.lang.reflect.Method.invoke(Method.java:511)
05-23 02:53:52.545: E/AndroidRuntime(875): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-23 02:53:52.545: E/AndroidRuntime(875): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-23 02:53:52.545: E/AndroidRuntime(875): at dalvik.system.NativeStart.main(Native Method)
05-23 02:53:52.545: E/AndroidRuntime(875): Caused by: java.lang.ClassCastException: android.widget.RelativeLayout cannot be cast to android.widget.Button
05-23 02:53:52.545: E/AndroidRuntime(875): at com.example.intelsocket.MainActivity.set_btn_status(MainActivity.java:275)
05-23 02:53:52.545: E/AndroidRuntime(875): at com.example.intelsocket.MainActivity.onCreate(MainActivity.java:62)
05-23 02:53:52.545: E/AndroidRuntime(875): at android.app.Activity.performCreate(Activity.java:5104)
05-23 02:53:52.545: E/AndroidRuntime(875): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
05-23 02:53:52.545: E/AndroidRuntime(875): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
05-23 02:53:52.545: E/AndroidRuntime(875): ... 11 more
05-23 02:54:33.206: E/AndroidRuntime(913): FATAL EXCEPTION: main
05-23 02:54:33.206: E/AndroidRuntime(913): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.intelsocket/com.example.intelsocket.MainActivity}: java.lang.ClassCastException: android.widget.RelativeLayout cannot be cast to android.widget.Button
05-23 02:54:33.206: E/AndroidRuntime(913): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
05-23 02:54:33.206: E/AndroidRuntime(913): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
05-23 02:54:33.206: E/AndroidRuntime(913): at android.app.ActivityThread.access$600(ActivityThread.java:141)
05-23 02:54:33.206: E/AndroidRuntime(913): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
05-23 02:54:33.206: E/AndroidRuntime(913): at android.os.Handler.dispatchMessage(Handler.java:99)
05-23 02:54:33.206: E/AndroidRuntime(913): at android.os.Looper.loop(Looper.java:137)
05-23 02:54:33.206: E/AndroidRuntime(913): at android.app.ActivityThread.main(ActivityThread.java:5041)
05-23 02:54:33.206: E/AndroidRuntime(913): at java.lang.reflect.Method.invokeNative(Native Method)
05-23 02:54:33.206: E/AndroidRuntime(913): at java.lang.reflect.Method.invoke(Method.java:511)
05-23 02:54:33.206: E/AndroidRuntime(913): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-23 02:54:33.206: E/AndroidRuntime(913): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-23 02:54:33.206: E/AndroidRuntime(913): at dalvik.system.NativeStart.main(Native Method)
05-23 02:54:33.206: E/AndroidRuntime(913): Caused by: java.lang.ClassCastException: android.widget.RelativeLayout cannot be cast to android.widget.Button
05-23 02:54:33.206: E/AndroidRuntime(913): at com.example.intelsocket.MainActivity.set_btn_status(MainActivity.java:275)
05-23 02:54:33.206: E/AndroidRuntime(913): at com.example.intelsocket.MainActivity.onCreate(MainActivity.java:62)
05-23 02:54:33.206: E/AndroidRuntime(913): at android.app.Activity.performCreate(Activity.java:5104)
05-23 02:54:33.206: E/AndroidRuntime(913): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
05-23 02:54:33.206: E/AndroidRuntime(913): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
05-23 02:54:33.206: E/AndroidRuntime(913): ... 11 more
这里这个错误 我是这样解决的：
public void set_btn_status(boolean paramBoolean)//使能按钮控件
{
((Button)findViewById(2131230727)).setEnabled(paramBoolean);
((Button)findViewById(2131230728)).setEnabled(paramBoolean);
((Button)findViewById(2131230729)).setEnabled(paramBoolean);
((Button)findViewById(2131230730)).setEnabled(paramBoolean);
}
改成：
public void set_btn_status(boolean paramBoolean)//使能按钮控件
{
((Button)findViewById(R.id.ledonBtn)).setEnabled(paramBoolean);
((Button)findViewById(R.id.ledoffBtn)).setEnabled(paramBoolean);
((Button)findViewById(R.id.jdqonBtn)).setEnabled(paramBoolean);
((Button)findViewById(R.id.jdqoffBtn)).setEnabled(paramBoolean);
}