无法使用扩展了SeekBar的自己的类运行android应用 [英] cannot run android app with own class which extends SeekBar
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问题描述
我正在尝试为SeekBar编写扩展名以自定义其行为.
I'm trying to write an extension to SeekBar to customise it's behaviour.
我无法在模拟器中运行新类的最基本形式.
I'm having problems getting the most basic form of the new class to run in the emulator.
我什至无法获得一个没有添加任何新功能的类.
I can't even get a class that doesn't add any new functionality to start up.
有人可以告诉我我在这里缺少什么基本的东西吗? 当我尝试使用ExtendedSeekBar时，为什么应用程序无法正确初始化? 在哪里可以找到发生的异常的详细信息?
Can anybody tell me what basic thing I'm missing out here? Why won't the app initialise correctly when I try to use an ExtendedSeekBar? Where do I find details of the exception that has occurred?
我使用Android SDK工具修订版10在XP上运行Eclipse. 我还应该提供什么其他信息?
I running Eclipse on XP, using Android SDK tools revision 10. What other information should I provide?
感谢您的帮助.
这是我想做的事情的详细信息.
Here's the detail of what I'm trying to do.
从Hello World教程应用程序开始，我将main.xml扩展为包括标准的SeekBar，并更新HelloAndroid.java以查找对象并将进度设置为25.
Starting from the Hello World tutorial app I extend main.xml to include a standard SeekBar and update HelloAndroid.java to find the object and set the progress to 25.
这是main.xml:
Here's main.xml:
<?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"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<SeekBar
android:id="@+id/SeekBar01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
这是HelloAndroid.java:
and here's HelloAndroid.java:
package com.example.helloandroid;
import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
public class HelloAndroid extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
SeekBar vSeekBar1 = (SeekBar)findViewById(R.id.SeekBar01);
vSeekBar1.setProgress(25);
}
}
我运行了这个，没问题，SeekBar出现在模拟器上的应用程序中，正确设置了进度
I run this and, no problem, the SeekBar appears in the app on the emulator with tthe progress correctly set
到目前为止没有问题...
No problems so far...
所以，现在我想开始扩展SeekBar.
So, now I want to start to extend the SeekBar.
我更新main.xml，将SeekBar更改为ExtendedSeekbar
I update main.xml to change SeekBar to ExtendedSeekbar
<?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"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<ExtendedSeekBar
android:id="@+id/SeekBar01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
和HelloAndroid.java查找新对象
and HelloAndroid.java to find the new object
package com.example.helloandroid;
import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
public class HelloAndroid extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ExtendedSeekBar vSeekBar1 = (ExtendedSeekBar)findViewById(R.id.SeekBar01);
vSeekBar1.setProgress(25);
}
}
我创建一个新类，其中仅包含新的构造函数和每个构造函数调用的初始化函数(因此我可以设置单个断点)
I create a new class that just contains the new Constructors and an initialise function that is called by each constructor (so I can set a single breakpoint)
ExtendedSeekBar.java
ExtendedSeekBar.java
package com.example.helloandroid;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.SeekBar;
public class ExtendedSeekBar extends SeekBar {
public ExtendedSeekBar(Context context) {
super(context);
Initialise();
}
public ExtendedSeekBar(Context context, AttributeSet attrs) {
super(context, attrs);
Initialise();
}
public ExtendedSeekBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
Initialise();
}
void Initialise(){
Log.i("ESB","ExtendedSeekBar Initialise ");
}
}
现在，当我运行它时，将显示调试视图，其中包含以下堆栈转储
Now, when I run it I get the Debug View appear with the following stack dump
HelloAndroid [Android Application]
DalvikVM[localhost:8628]
Thread [<1> main] (Suspended (exception RuntimeException))
ActivityThread.performLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1647
ActivityThread.handleLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1663
ActivityThread.access$1500(ActivityThread, ActivityThread$ActivityClientRecord, Intent) line: 117
ActivityThread$H.handleMessage(Message) line: 931
ActivityThread$H(Handler).dispatchMessage(Message) line: 99
Looper.loop() line: 123
ActivityThread.main(String[]) line: 3683
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]
Method.invoke(Object, Object...) line: 507
ZygoteInit$MethodAndArgsCaller.run() line: 839
ZygoteInit.main(String[]) line: 597
NativeStart.main(String[]) line: not available [native method]
Thread [<8> Binder Thread #2] (Running)
Thread [<7> Binder Thread #1] (Running)
LogCat窗口包含以下内容
The LogCat window contains the following
03-31 17:44:56.628: DEBUG/AndroidRuntime(589): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
03-31 17:44:56.628: DEBUG/AndroidRuntime(589): CheckJNI is ON
03-31 17:44:57.518: DEBUG/AndroidRuntime(589): Calling main entry com.android.commands.pm.Pm
03-31 17:44:57.749: DEBUG/dalvikvm(239): GC_EXPLICIT freed 3K, 54% free 2544K/5511K, external 410K/517K, paused 72ms
03-31 17:44:57.759: WARN/ActivityManager(61): No content provider found for:
03-31 17:44:57.778: WARN/ActivityManager(61): No content provider found for:
03-31 17:44:57.817: DEBUG/PackageParser(61): Scanning package: /data/app/vmdl-558475578.tmp
03-31 17:44:57.909: INFO/PackageManager(61): Removing non-system package:com.example.helloandroid
03-31 17:44:57.909: INFO/ActivityManager(61): Force stopping package com.example.helloandroid uid=10037
03-31 17:44:57.979: INFO/Process(61): Sending signal. PID: 577 SIG: 9
03-31 17:44:58.009: INFO/WindowManager(61): WIN DEATH: Window{40657ca8 com.example.helloandroid/com.example.helloandroid.HelloAndroid paused=false}
03-31 17:44:58.159: WARN/InputManagerService(61): Got RemoteException sending setActive(false) notification to pid 577 uid 10037
03-31 17:44:58.597: DEBUG/dalvikvm(61): GC_CONCURRENT freed 483K, 42% free 4431K/7623K, external 809K/1222K, paused 8ms+9ms
03-31 17:44:58.748: DEBUG/PackageManager(61): Scanning package com.example.helloandroid
03-31 17:44:58.748: INFO/PackageManager(61): Package com.example.helloandroid codePath changed from /data/app/com.example.helloandroid-1.apk to /data/app/com.example.helloandroid-2.apk; Retaining data and using new
03-31 17:44:58.768: INFO/PackageManager(61): Unpacking native libraries for /data/app/com.example.helloandroid-2.apk
03-31 17:44:58.798: DEBUG/installd(35): DexInv: --- BEGIN '/data/app/com.example.helloandroid-2.apk' ---
03-31 17:44:59.038: DEBUG/dalvikvm(598): DexOpt: load 62ms, verify+opt 15ms
03-31 17:44:59.058: DEBUG/installd(35): DexInv: --- END '/data/app/com.example.helloandroid-2.apk' (success) ---
03-31 17:44:59.058: WARN/PackageManager(61): Code path for pkg : com.example.helloandroid changing from /data/app/com.example.helloandroid-1.apk to /data/app/com.example.helloandroid-2.apk
03-31 17:44:59.058: WARN/PackageManager(61): Resource path for pkg : com.example.helloandroid changing from /data/app/com.example.helloandroid-1.apk to /data/app/com.example.helloandroid-2.apk
03-31 17:44:59.058: DEBUG/PackageManager(61): Activities: com.example.helloandroid.HelloAndroid
03-31 17:44:59.078: INFO/ActivityManager(61): Force stopping package com.example.helloandroid uid=10037
03-31 17:44:59.178: INFO/installd(35): move /data/dalvik-cache/data@app@com.example.helloandroid-2.apk@classes.dex -> /data/dalvik-cache/data@app@com.example.helloandroid-2.apk@classes.dex
03-31 17:44:59.178: DEBUG/PackageManager(61): New package installed in /data/app/com.example.helloandroid-2.apk
03-31 17:44:59.278: INFO/ActivityManager(61): Force stopping package com.example.helloandroid uid=10037
03-31 17:44:59.369: DEBUG/dalvikvm(129): GC_EXPLICIT freed 3K, 53% free 2850K/5959K, external 1527K/1970K, paused 72ms
03-31 17:44:59.621: WARN/RecognitionManagerService(61): no available voice recognition services found
03-31 17:44:59.958: DEBUG/dalvikvm(185): GC_EXPLICIT freed 94K, 52% free 2758K/5703K, external 410K/517K, paused 559ms
03-31 17:45:00.098: DEBUG/dalvikvm(61): GC_EXPLICIT freed 474K, 43% free 4349K/7623K, external 807K/1222K, paused 138ms
03-31 17:45:00.198: INFO/installd(35): unlink /data/dalvik-cache/data@app@com.example.helloandroid-1.apk@classes.dex
03-31 17:45:00.218: DEBUG/AndroidRuntime(589): Shutting down VM
03-31 17:45:00.249: DEBUG/dalvikvm(589): GC_CONCURRENT freed 101K, 72% free 295K/1024K, external 0K/0K, paused 2ms+2ms
03-31 17:45:00.249: DEBUG/jdwp(589): Got wake-up signal, bailing out of select
03-31 17:45:00.249: DEBUG/dalvikvm(589): Debugger has detached; object registry had 1 entries
03-31 17:45:00.278: INFO/AndroidRuntime(589): NOTE: attach of thread 'Binder Thread #3' failed
03-31 17:45:01.029: DEBUG/AndroidRuntime(603): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
03-31 17:45:01.029: DEBUG/AndroidRuntime(603): CheckJNI is ON
03-31 17:45:01.978: DEBUG/AndroidRuntime(603): Calling main entry com.android.commands.am.Am
03-31 17:45:02.029: INFO/ActivityManager(61): Force stopping package com.example.helloandroid uid=10037
03-31 17:45:02.029: INFO/ActivityManager(61): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.example.helloandroid/.HelloAndroid } from pid 603
03-31 17:45:02.168: DEBUG/AndroidRuntime(603): Shutting down VM
03-31 17:45:02.199: INFO/ActivityManager(61): Start proc com.example.helloandroid for activity com.example.helloandroid/.HelloAndroid: pid=612 uid=10037 gids={}
03-31 17:45:02.248: INFO/AndroidRuntime(603): NOTE: attach of thread 'Binder Thread #3' failed
03-31 17:45:02.267: DEBUG/dalvikvm(603): GC_CONCURRENT freed 102K, 69% free 322K/1024K, external 0K/0K, paused 4ms+1ms
03-31 17:45:02.289: DEBUG/jdwp(603): Got wake-up signal, bailing out of select
03-31 17:45:02.289: DEBUG/dalvikvm(603): Debugger has detached; object registry had 1 entries
03-31 17:45:03.208: WARN/ActivityThread(612): Application com.example.helloandroid is waiting for the debugger on port 8100...
03-31 17:45:03.288: INFO/System.out(612): Sending WAIT chunk
03-31 17:45:03.298: INFO/dalvikvm(612): Debugger is active
03-31 17:45:03.358: INFO/System.out(612): Debugger has connected
03-31 17:45:03.409: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:03.608: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:03.808: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:04.018: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:04.218: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:04.419: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:04.628: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:04.828: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:05.038: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:05.248: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:05.449: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:05.648: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:05.859: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:06.058: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:06.268: INFO/System.out(612): waiting for debugger to settle...
03-31 17:45:06.479: INFO/System.out(612): debugger has settled (1340)
03-31 17:45:12.150: WARN/ActivityManager(61): Launch timeout has expired, giving up wake lock!
03-31 17:45:13.158: WARN/ActivityManager(61): Activity idle timeout for HistoryRecord{40556f78 com.example.helloandroid/.HelloAndroid}
03-31 17:45:18.238: DEBUG/dalvikvm(239): GC_EXPLICIT freed 6K, 54% free 2543K/5511K, external 410K/517K, paused 53ms
03-31 17:45:23.369: DEBUG/dalvikvm(287): GC_EXPLICIT freed 9K, 54% free 2597K/5639K, external 410K/517K, paused 119ms
03-31 17:45:28.339: DEBUG/dalvikvm(329): GC_EXPLICIT freed <1K, 54% free 2539K/5511K, external 410K/517K, paused 51ms
03-31 17:45:33.409: DEBUG/dalvikvm(129): GC_EXPLICIT freed 76K, 51% free 2929K/5959K, external 1542K/1970K, paused 110ms
03-31 17:45:38.949: DEBUG/SntpClient(61): request time failed: java.net.SocketException: Address family not supported by protocol
，并且该应用程序出现在模拟器中，而没有main.xml指定的任何项目，只有标题栏.不会遇到我在ExtendedSeekBar :: initialise中设置的断点.
and the app appears in the emulator without any of the items specified by main.xml, just the title bar. The breakpoint I set in ExtendedSeekBar::initialise is not encountered.
推荐答案
您需要通过以下方式将视图添加到xml:
You need to add the view to the xml in the following way:
<view class="com.example.helloandroid.ExtendedSeekBar"...
这篇关于无法使用扩展了SeekBar的自己的类运行android应用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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