addView崩溃，做工精细的2.1和1.6

IM使用addVIew，addview使用的FrameLayout叫，我的球类是为延伸查看一个参数传递，它使用OnDraw函数addView崩溃，做工精细的2.1和1.6

addView被称为在按钮监听器中。程序加载正常但崩溃时，我按下按钮。

一切工作在Android 1.6和2.1模拟器，和2.1 HTC手机。崩溃采用Android 2.2模拟器和2.2的HTC手机

如果我评论的main.addview声明，一切工作正常，即使在2.2

logcat的连接藏汉

Ball类

import android.content.Context; 
import android.graphics.Canvas; 
import android.graphics.Paint; 
import android.graphics.RectF; 
import android.view.View; 

public class Ball extends View{ 
    private final float left; 
    private final float right; 
    private final float top; 
    private final float bottom; 
    private final float scale; 
    private float startAngle; 
    private float sweepAngle; 
    private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 

    public Ball(Context context, float a, float b, float c, float d, Paint e, float f, float g, float scale) { 

    super(context); 
     this.mPaint = e; 
     this.left = a; 
     this.top = b; 
     this.right = c; 
     this.bottom = d; 
     this.startAngle = f; 
     this.sweepAngle = g; 
     this.scale = scale; 
    } 

    @Override 
    protected void onDraw(Canvas canvas) { 
     super.onDraw(canvas); 

     RectF clockRect = new RectF(left, top, right, bottom); 
     canvas.drawArc(clockRect, startAngle, sweepAngle, true, this.mPaint); 
     canvas.drawLine(160*scale, 120*scale, 160*scale, 260*scale, this.mPaint); 
    } 
}

报告

main.xml

<?xml version="1.0" encoding="utf-8"?> 



<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@+id/main_view" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:background="#FFFFFF"> 


<RelativeLayout 
    android:orientation="vertical" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:background="#FFFFFF" 
android:id="@+id/RelativeLayout01" 
> 
    <Button android:text="Calculate" 
    android:layout_height="45dip" 
    android:layout_width="90dip" 
    android:id="@+id/Button01" 
    android:layout_below="@+id/Spinner06" 
    android:layout_alignRight="@+id/Spinner06"> 
    </Button> 
     </RelativeLayout> 
</FrameLayout>

tyre.java

import java.text.DecimalFormat; 

import android.app.Activity; 
import android.content.Intent; 
import android.graphics.Paint; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.FrameLayout; 
import android.widget.RelativeLayout; 
import android.widget.Spinner; 
import android.widget.TextView; 

public class tyre extends Activity { 
    /** Called when the activity is first created. */ 

FrameLayout main1; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     main1 = (FrameLayout) findViewById(R.id.main_view); 

     final Button button1 = (Button) findViewById(R.id.Button01); 

     final Paint mPaint3= new Paint(Paint.ANTI_ALIAS_FLAG); 
     mPaint3.setColor(0xFFFFFFFF); 

     button1.setOnClickListener 
     (
      new View.OnClickListener() 
      { 
      public void onClick(View v) 
      { 
      float clear = (float) (0.75*22*2.54 + (0.7*2*365 * 80/1000)); 
        final float scale = getBaseContext().getResources().getDisplayMetrics().density; 
        float centerX = 160; 
        float centerY = 190; 

        main1.addView(new Ball(getParent(),(centerX-clear)*scale,(centerY-clear)*scale,(centerX+clear)*scale,(centerY+clear)*scale,mPaint3,0,360,scale)); 

       } 
     } 
     );  
    } 
}

目录下载，从压在Eclipse中运行，直到力的Android模拟器退出时，我按下按钮

01-14 12:39:17.567: INFO/ActivityManager(59): Start proc com.aimenrg.tyrecalc for activity com.aimenrg.tyrecalc/.tyre: pid=965 uid=10033 gids={} 
01-14 12:39:18.797: INFO/ActivityManager(59): Displayed activity com.aimenrg.tyrecalc/.tyre: 1365 ms (total 1365 ms) 
01-14 12:39:24.387: DEBUG/dalvikvm(127): GC_EXPLICIT freed 765 objects/43384 bytes in 163ms 
01-14 12:39:29.476: DEBUG/dalvikvm(157): GC_EXPLICIT freed 156 objects/11336 bytes in 201ms 
01-14 12:39:34.427: DEBUG/dalvikvm(268): GC_EXPLICIT freed 28 objects/1400 bytes in 144ms 
01-14 12:39:47.447: DEBUG/AndroidRuntime(965): Shutting down VM 
01-14 12:39:47.447: WARN/dalvikvm(965): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965): FATAL EXCEPTION: main 
01-14 12:39:47.467: ERROR/AndroidRuntime(965): java.lang.NullPointerException 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at android.view.ViewConfiguration.get(ViewConfiguration.java:211) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at android.view.View.<init>(View.java:1814) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at com.aimenrg.tyrecalc.Ball.<init>(Ball.java:21) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at com.aimenrg.tyrecalc.tyre$1.onClick(tyre.java:153) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at android.view.View.performClick(View.java:2408) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at android.view.View$PerformClick.run(View.java:8816) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at android.os.Handler.handleCallback(Handler.java:587) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at android.os.Handler.dispatchMessage(Handler.java:92) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at android.os.Looper.loop(Looper.java:123) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at java.lang.reflect.Method.invokeNative(Native Method) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at java.lang.reflect.Method.invoke(Method.java:521) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
01-14 12:39:47.467: ERROR/AndroidRuntime(965):  at dalvik.system.NativeStart.main(Native Method) 
01-14 12:39:47.489: WARN/ActivityManager(59): Force finishing activity com.aimenrg.tyrecalc/.tyre 
01-14 12:39:48.017: WARN/ActivityManager(59): Activity pause timeout for HistoryRecord{43f49210 com.aimenrg.tyrecalc/.tyre} 
01-14 12:39:51.377: INFO/Process(965): Sending signal. PID: 965 SIG: 9 
01-14 12:39:51.412: INFO/ActivityManager(59): Process com.aimenrg.tyrecalc (pid 965) has died. 
01-14 12:39:51.417: INFO/WindowManager(59): WIN DEATH: Window{43f98158 com.aimenrg.tyrecalc/com.aimenrg.tyrecalc.tyre paused=false} 
01-14 12:39:51.537: WARN/InputManagerService(59): Got RemoteException sending setActive(false) notification to pid 965 uid 10033 
01-14 12:39:58.478: WARN/ActivityManager(59): Activity destroy timeout for HistoryRecord{43f49210 com.aimenrg.tyrecalc/.tyre}

来源

2011-01-14 kasai

看起来你正在传递一个无效的背景下发生错误.. 。不知道为什么类型检查没有捕获它，因为它看起来像传递了一个不应该编译的ViewParent。

尝试改变第一个参数你的球实例来此：

new Ball(tyre.this,...

来源

2011-01-14 11:13:26

你真棒，感谢ü。有用。我不知道为什么它在Android 1.6和2.1上工作 – kasai 2011-01-14 12:18:19

addView崩溃，做工精细的2.1和1.6

回答

相关问题