Android:崩溃:二进制 XML 文件行:错误膨胀类(使用 SurfaceView)

发布于 11-04 04:58 字数 10292 浏览 1 评论 0原文

我有 android surfaceView 并且我正在尝试向其添加按钮。 在 SurfaceView 画布中我画了一些东西。我有一个线程类来继续绘图。

package com.androidsurfaceview;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class androidsurfaceview extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button buttonShowHide = (Button)findViewById(R.id.showhide);
        final Button buttonDummy = (Button)findViewById(R.id.dummy);

        buttonShowHide.setOnClickListener(
                new Button.OnClickListener(){

                    @Override
                    public void onClick(View arg0) {
                        // TODO Auto-generated method stub
                        if(buttonDummy.getVisibility()==View.VISIBLE){
                            buttonDummy.setVisibility(View.GONE);
                        }
                        else{
                            buttonDummy.setVisibility(View.VISIBLE);
                        }
                    }

                }
        );

线程类

package com.androidsurfaceview;

import android.graphics.Canvas;
import android.view.SurfaceHolder;
public class MySurfaceThread extends Thread {
    private SurfaceHolder myThreadSurfaceHolder;
    private com.androidsurfaceview.test.MySurfaceView  myThreadSurfaceView;
    private boolean myThreadRun = false;

    public MySurfaceThread(SurfaceHolder surfaceHolder, com.androidsurfaceview.test.MySurfaceView surfaceView) {
        myThreadSurfaceHolder = surfaceHolder;
        myThreadSurfaceView = surfaceView;
    }

    public void setRunning(boolean b) {
        myThreadRun = b;
    }

    @Override
    public void run() {
        // TODO Auto-generated method stub
        while(myThreadRun){
            Canvas c = null;

            try{
                c = myThreadSurfaceHolder.lockCanvas(null);
                synchronized (myThreadSurfaceHolder){
                    myThreadSurfaceView.onDraw(c);
                }
                sleep(100);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            finally{
                // do this in a finally so that if an exception is thrown
                // during the above, we don't leave the Surface in an
                // inconsistent state
                if (c != null) {
                    myThreadSurfaceHolder.unlockCanvasAndPost(c);
                }
            }
        }
    }
}

SurfaceView &用于绘图的类

 package com.androidsurfaceview;

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

 public class test extends Activity{

      //     ......
       //   I do a few things here... with this class test.

    public class MySurfaceView extends SurfaceView implements SurfaceHolder.Callback{

        private MySurfaceThread thread;
        private Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        int cx, cy, offx, offy;

        public MySurfaceView(Context context) {
            super(context);
            // TODO Auto-generated constructor stub
            init();
        }

        public MySurfaceView(Context context, AttributeSet attrs) {
            super(context, attrs);
            // TODO Auto-generated constructor stub
            init();
        }

        public MySurfaceView(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
            // TODO Auto-generated constructor stub
            init();
        }

         private void init(){
              getHolder().addCallback(this);
              thread = new MySurfaceThread(getHolder(), this);

              setFocusable(true); // make sure we get key events

              paint.setStyle(Paint.Style.STROKE);
              paint.setStrokeWidth(3);
              paint.setColor(Color.WHITE);

              cx = 0;
              cy = 0;
              offx = 10;
              offy = 10;

             }

        @Override
        public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
            // TODO Auto-generated method stub

        }

        @Override
        public void surfaceCreated(SurfaceHolder holder) {
            // TODO Auto-generated method stub
            thread.setRunning(true);
            thread.start();

        }

        @Override
        public void surfaceDestroyed(SurfaceHolder holder) {
            // TODO Auto-generated method stub
            boolean retry = true;
            thread.setRunning(false);
            while (retry) {
                try {
                    thread.join();
                    retry = false;
                } 
                catch (InterruptedException e) {
                }
            }
        }
    ////Just a simple graphic of moving circle.
        @Override
        protected void onDraw(Canvas canvas) {
            // TODO Auto-generated method stub
            canvas.drawRGB(0, 0, 0);
            canvas.drawCircle(cx, cy, 3, paint);
            cx += offx;
            if (cx > getWidth() || (cx < 0)){
                offx *= -1;
                cx += offx;
            }

            cy += offy;
            if (cy > getHeight() || (cy < 0)){
                offy *= -1;
                cy += offy;
            }
        }
    }
    }

这是 ma​​in.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">
<Button
    android:id="@+id/showhide"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Toggle The Another Button Show/Hide" />
<Button
    android:id="@+id/dummy"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="a Button" />
<FrameLayout 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

<com.androidsurfaceview.test.MySurfaceView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"/>

</FrameLayout>
</LinearLayout>

问题: 如果我没有 "MySurfaceView" 作为嵌套类,上面的代码才有效。但对于外部类 "test" 我收到以下错误。如果我删除“班级测试” 效果很好。

错误/崩溃

04-29 11:43:18.977: ERROR/AndroidRuntime(21832): FATAL EXCEPTION: main
04-29 11:43:18.977: ERROR/AndroidRuntime(21832): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.androidsurfaceview/com.androidsurfaceview.androidsurfaceview}: **android.view.InflateException: Binary XML file line #20: Error inflating class com.androidsurfaceview.test.MySurfaceView**
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.os.Looper.loop(Looper.java:123)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.main(ActivityThread.java:4627)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at java.lang.reflect.Method.invokeNative(Native Method)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at java.lang.reflect.Method.invoke(Method.java:521)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at dalvik.system.NativeStart.main(Native Method)
**04-29 11:43:18.977: ERROR/AndroidRuntime(21832): Caused by: android.view.InflateException: Binary XML file line #20: Error inflating class com.androidsurfaceview.test.MySurfaceView**
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:576)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:200)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.Activity.setContentView(Activity.java:1647)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at com.androidsurfaceview.androidsurfaceview.onCreate(androidsurfaceview.java:13)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)

任何帮助都会很棒......我坚持这个。

I'm having android surfaceView and in that I'm trying to add buttons to this.
In the surfaceView canvas I draw something. And I have a thread class to keep drawing.

package com.androidsurfaceview;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class androidsurfaceview extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button buttonShowHide = (Button)findViewById(R.id.showhide);
        final Button buttonDummy = (Button)findViewById(R.id.dummy);

        buttonShowHide.setOnClickListener(
                new Button.OnClickListener(){

                    @Override
                    public void onClick(View arg0) {
                        // TODO Auto-generated method stub
                        if(buttonDummy.getVisibility()==View.VISIBLE){
                            buttonDummy.setVisibility(View.GONE);
                        }
                        else{
                            buttonDummy.setVisibility(View.VISIBLE);
                        }
                    }

                }
        );

The thread class

package com.androidsurfaceview;

import android.graphics.Canvas;
import android.view.SurfaceHolder;
public class MySurfaceThread extends Thread {
    private SurfaceHolder myThreadSurfaceHolder;
    private com.androidsurfaceview.test.MySurfaceView  myThreadSurfaceView;
    private boolean myThreadRun = false;

    public MySurfaceThread(SurfaceHolder surfaceHolder, com.androidsurfaceview.test.MySurfaceView surfaceView) {
        myThreadSurfaceHolder = surfaceHolder;
        myThreadSurfaceView = surfaceView;
    }

    public void setRunning(boolean b) {
        myThreadRun = b;
    }

    @Override
    public void run() {
        // TODO Auto-generated method stub
        while(myThreadRun){
            Canvas c = null;

            try{
                c = myThreadSurfaceHolder.lockCanvas(null);
                synchronized (myThreadSurfaceHolder){
                    myThreadSurfaceView.onDraw(c);
                }
                sleep(100);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            finally{
                // do this in a finally so that if an exception is thrown
                // during the above, we don't leave the Surface in an
                // inconsistent state
                if (c != null) {
                    myThreadSurfaceHolder.unlockCanvasAndPost(c);
                }
            }
        }
    }
}

The surfaceView & the class for drawing

 package com.androidsurfaceview;

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

 public class test extends Activity{

      //     ......
       //   I do a few things here... with this class test.

    public class MySurfaceView extends SurfaceView implements SurfaceHolder.Callback{

        private MySurfaceThread thread;
        private Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        int cx, cy, offx, offy;

        public MySurfaceView(Context context) {
            super(context);
            // TODO Auto-generated constructor stub
            init();
        }

        public MySurfaceView(Context context, AttributeSet attrs) {
            super(context, attrs);
            // TODO Auto-generated constructor stub
            init();
        }

        public MySurfaceView(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
            // TODO Auto-generated constructor stub
            init();
        }

         private void init(){
              getHolder().addCallback(this);
              thread = new MySurfaceThread(getHolder(), this);

              setFocusable(true); // make sure we get key events

              paint.setStyle(Paint.Style.STROKE);
              paint.setStrokeWidth(3);
              paint.setColor(Color.WHITE);

              cx = 0;
              cy = 0;
              offx = 10;
              offy = 10;

             }

        @Override
        public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
            // TODO Auto-generated method stub

        }

        @Override
        public void surfaceCreated(SurfaceHolder holder) {
            // TODO Auto-generated method stub
            thread.setRunning(true);
            thread.start();

        }

        @Override
        public void surfaceDestroyed(SurfaceHolder holder) {
            // TODO Auto-generated method stub
            boolean retry = true;
            thread.setRunning(false);
            while (retry) {
                try {
                    thread.join();
                    retry = false;
                } 
                catch (InterruptedException e) {
                }
            }
        }
    ////Just a simple graphic of moving circle.
        @Override
        protected void onDraw(Canvas canvas) {
            // TODO Auto-generated method stub
            canvas.drawRGB(0, 0, 0);
            canvas.drawCircle(cx, cy, 3, paint);
            cx += offx;
            if (cx > getWidth() || (cx < 0)){
                offx *= -1;
                cx += offx;
            }

            cy += offy;
            if (cy > getHeight() || (cy < 0)){
                offy *= -1;
                cy += offy;
            }
        }
    }
    }

Here is the 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">
<Button
    android:id="@+id/showhide"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Toggle The Another Button Show/Hide" />
<Button
    android:id="@+id/dummy"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="a Button" />
<FrameLayout 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

<com.androidsurfaceview.test.MySurfaceView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"/>

</FrameLayout>
</LinearLayout>

PROBLEM:
The above code works ONLY if I don't have the "MySurfaceView" as nested class. but with the outer class "test" I get the following error. If I remove the "class test"
it works fine.

Error/Crash

04-29 11:43:18.977: ERROR/AndroidRuntime(21832): FATAL EXCEPTION: main
04-29 11:43:18.977: ERROR/AndroidRuntime(21832): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.androidsurfaceview/com.androidsurfaceview.androidsurfaceview}: **android.view.InflateException: Binary XML file line #20: Error inflating class com.androidsurfaceview.test.MySurfaceView**
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.os.Looper.loop(Looper.java:123)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.main(ActivityThread.java:4627)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at java.lang.reflect.Method.invokeNative(Native Method)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at java.lang.reflect.Method.invoke(Method.java:521)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at dalvik.system.NativeStart.main(Native Method)
**04-29 11:43:18.977: ERROR/AndroidRuntime(21832): Caused by: android.view.InflateException: Binary XML file line #20: Error inflating class com.androidsurfaceview.test.MySurfaceView**
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:576)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:200)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.Activity.setContentView(Activity.java:1647)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at com.androidsurfaceview.androidsurfaceview.onCreate(androidsurfaceview.java:13)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-29 11:43:18.977: ERROR/AndroidRuntime(21832):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)

Any help will be great ...I'm stuck with this.

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评论(1

亽野灬性zι浪2024-11-11 04:58:08

首先,您必须将视图声明为 static 类型,以便即使在没有可用的持有类实例的情况下也能够对其进行扩充:

public static class MySurfaceView extends SurfaceView 
    implements SurfaceHolder.Callback

布局 xml 中的行

<com.androidsurfaceview.test.MySurfaceView

表明,MySurfaceView 类位于 com.androidsurfaceview.test 包内,并尝试从那里对其进行膨胀,这是错误的。

在您的布局中,您应该遵循 package.class$innerclass 声明形式。

但是由于"$"是非法字符,所以你不能这样写

<com.androidsurfaceview.test$MySurfaceView

,所以你必须在布局xml中指定你的视图,如下所示:

<view class="com.androidsurfaceview.test$MySurfaceView"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"/>

这样它就可以工作。

First, you must declare your view as a static type, to be able to be inflated it even when no instance of the holding class is available:

public static class MySurfaceView extends SurfaceView 
    implements SurfaceHolder.Callback

The line

<com.androidsurfaceview.test.MySurfaceView

in your layout xml suggests, that the MySurfaceView class is inside the com.androidsurfaceview.test package, and tries to inflate it from there, which is wrong.

In your layout you should follow the package.class$innerclass form of declaration.

BUT since the "$" is illegal character, you cannot write

<com.androidsurfaceview.test$MySurfaceView

so you must specify your view in the layout xml as follows:

<view class="com.androidsurfaceview.test$MySurfaceView"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"/>

This way it will work.

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