好像是运行到
Log.v(ATG, "onclick haved111111 ");
super.onCreate(savedInstanceState);
setContentView(R.layout.handclock2);
Button backButton = (Button)findViewById(R.id.returnMain1);
Log.v(ATG, "onclick haved22222222 ");
这出错的,因为输出了onclick haved111111 和 onclick haved22222222
没有输出 :onclick haved3333333333
本人初学,为什么在主界面就可以加监听,在其他的界面里就不能加呢,应该是这个错吧。
Log.v(ATG, "onclick haved111111 ");
super.onCreate(savedInstanceState);
setContentView(R.layout.handclock2);
Button backButton = (Button)findViewById(R.id.returnMain1);
Log.v(ATG, "onclick haved22222222 ");
这出错的,因为输出了onclick haved111111 和 onclick haved22222222
没有输出 :onclick haved3333333333
本人初学,为什么在主界面就可以加监听,在其他的界面里就不能加呢,应该是这个错吧。
我觉得...你TestHandClock2中的OnClick,只需要调用finish()就好了,不需要再去启动一个新的intent。
Button backButton = (Button)findViewById(R.id.returnMain1);
这里出错的话,多半是没有找到在handclock2中没有找到returnMain1这个ID
你在去看看你的Layout...同时,你最好看一下系统的Log,看一下具体的错误原因是什么。
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;public class TestHandClock2 extends Activity implements OnClickListener{
String ATG = "KKKKKKKKK";
@Override
public void onCreate(Bundle savedInstanceState) {
Log.v(ATG, "onclick haved111111 ");
super.onCreate(savedInstanceState);
setContentView(R.layout.handclock2);
Button backButton = (Button)findViewById(R.id.returnMain1);
Log.v(ATG, "onclick haved22222222 ");
backButton.setOnClickListener(this);
Log.v(ATG, "onclick haved3333333333 ");
} @Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
/*Intent intent = null;
intent = new Intent(this, Main.class);
Log.v(ATG, "onclick haved44444 ");
startActivity(intent);*/
Log.v(ATG, "onclick haved44444 ");
finish();
Log.v(ATG, "onclick haved44444 ");
}
}
改了,还是提示出错,没去调用onClick(),顺便问一句,怎么看log,看了不懂,就知道自己输出的测试代码输出了两行,再onClick()函数里想输出的代码没输出,所以就判断说是没执行onClick()。
09-28 03:47:19.523: ERROR/AndroidRuntime(284): ERROR: thread attach failed
09-28 03:47:19.594: DEBUG/dalvikvm(284): LinearAlloc 0x0 used 639500 of 5242880 (12%)
09-28 03:47:19.774: DEBUG/ddm-heap(290): Got feature list request
09-28 03:47:19.914: INFO/ARMAssembler(52): generated scanline__00000177:03515104_00000001_00000000 [ 73 ipp] (95 ins) at [0x4990d0:0x49924c] in 468949 ns
09-28 03:47:19.953: INFO/ARMAssembler(52): generated scanline__00000077:03545404_00000004_00000000 [ 47 ipp] (67 ins) at [0x499250:0x49935c] in 462650 ns
09-28 03:47:20.184: INFO/ARMAssembler(52): generated scanline__00000077:03010104_00000004_00000000 [ 22 ipp] (41 ins) at [0x499360:0x499404] in 509195 ns
09-28 03:47:20.453: INFO/ActivityManager(52): Displayed activity net.blogjava.mobile/.Main: 1015 ms (total 1015 ms)
09-28 03:47:21.533: INFO/ActivityManager(52): Starting activity: Intent { cmp=net.blogjava.mobile/.TestHandClock2 }
09-28 03:47:21.603: VERBOSE/KKKKKKKKK(290): onclick haved111111
09-28 03:47:21.653: VERBOSE/KKKKKKKKK(290): onclick haved22222222
09-28 03:47:21.663: DEBUG/AndroidRuntime(290): Shutting down VM
09-28 03:47:21.663: WARN/dalvikvm(290): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
09-28 03:47:21.673: ERROR/AndroidRuntime(290): Uncaught handler: thread main exiting due to uncaught exception
09-28 03:47:21.683: ERROR/AndroidRuntime(290): java.lang.RuntimeException: Unable to start activity ComponentInfo{net.blogjava.mobile/net.blogjava.mobile.TestHandClock2}: java.lang.NullPointerException
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at android.os.Handler.dispatchMessage(Handler.java:99)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at android.os.Looper.loop(Looper.java:123)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at android.app.ActivityThread.main(ActivityThread.java:4363)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at java.lang.reflect.Method.invokeNative(Native Method)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at java.lang.reflect.Method.invoke(Method.java:521)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at dalvik.system.NativeStart.main(Native Method)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): Caused by: java.lang.NullPointerException
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at net.blogjava.mobile.TestHandClock2.onCreate(TestHandClock2.java:23)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
09-28 03:47:21.683: ERROR/AndroidRuntime(290): ... 11 more
09-28 03:47:21.714: INFO/Process(52): Sending signal. PID: 290 SIG: 3
09-28 03:47:21.714: INFO/dalvikvm(290): threadid=7: reacting to signal 3
09-28 03:47:21.714: ERROR/dalvikvm(290): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
09-28 03:47:23.063: INFO/Process(290): Sending signal. PID: 290 SIG: 9
09-28 03:47:23.093: INFO/WindowManager(52): WIN DEATH: Window{43d1e5b0 net.blogjava.mobile/net.blogjava.mobile.Main paused=false}
09-28 03:47:23.093: INFO/ActivityManager(52): Process net.blogjava.mobile (pid 290) has died.
09-28 03:47:23.143: INFO/ActivityManager(52): Start proc net.blogjava.mobile for activity net.blogjava.mobile/.Main: pid=297 uid=10025 gids={1015}
09-28 03:47:23.463: DEBUG/ddm-heap(297): Got feature list request
09-28 03:47:23.543: INFO/UsageStats(52): Unexpected resume of net.blogjava.mobile while already resumed in net.blogjava.mobile
09-28 03:47:23.563: INFO/ActivityManager(52): Displayed activity net.blogjava.mobile/.Main: 460 ms (total 1979 ms)
09-28 03:47:23.883: WARN/InputManagerService(52): Got RemoteException sending setActive(false) notification to pid 290 uid 10025
09-28 03:47:24.833: WARN/KeyCharacterMap(297): No keyboard for id 0
09-28 03:47:24.843: WARN/KeyCharacterMap(297): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
Button backButton = (Button)findViewById(R.id.returnMain1);
Log.v(ATG, "onclick haved22222222 ");但是程序输出了 : onclick haved22222222 啊,应该是找到了吧?
这个是 layout中的xml代码
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background = "#FFF"
android:gravity = "center">
<net.blogjava.mobile.widget.HandClock
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:layout_marginTop = "10dp"
clockImageSrc = "@drawable/clock2"
scale = "0.3"
handCenterWidthScale = "0.5"
handCenterHeightScale = "0.5"
minuteHandSize = "154"
hourHandSize = "100"
/>
<net.blogjava.mobile.widget.HandClock
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:layout_marginTop = "10dp"
clockImageSrc = "@drawable/clock3"
scale = "0.3"
handCenterWidthScale = "0.5"
handCenterHeightScale = "0.5"
minuteHandSize = "154"
hourHandSize = "100"
/>
<Button android:id = "@+id/returnMain2"
android:layout_width = "150dp"
android:layout_height = "40dp"
android:text = "返回主页面"
/>
</LinearLayout>