[SOLVED]Graphic problems

3m3r1c · by **3m3r1c** » Fri Sep 25, 2009 6:39 pm

Hi,
I try to understand how display a bitmap on a surface. For it, I use the code from LunarLander and the GameTemplate of this forum

I have a problem when I start my application on emulator, I obtain an error message.
"The aplication has stopped unexpectedly. Please try again"

I have the same problem with the GameTemplate if I change the package path. I really don't understand the error, even when I use the debug mode step by step. For that I put my source code here :

GraphicAppTest.java

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package com.example.graphicapptest;
 
import com.example.graphicapptest.GraphicAppTestView.GraphicAppThread;
 
import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
 
public class GraphicAppTest extends Activity {
        
        public GraphicAppTestView mGraphicAppTestView;
        public GraphicAppThread mGraphicAppThread;
        
        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main);
                
                requestWindowFeature(Window.FEATURE_NO_TITLE);
                
                mGraphicAppTestView = (GraphicAppTestView) findViewById(R.id.graphictest);
                mGraphicAppThread = mGraphicAppTestView.getThread();
                
                mGraphicAppThread.doStart();
        }
        
        protected void onPause() {
                super.onPause();
                mGraphicAppTestView.getThread().pause(); // pause game when Activity pauses
        }
}
 
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GraphicAppTestView.java

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package com.example.graphicapptest;
 
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
 
public class GraphicAppTestView extends SurfaceView implements SurfaceHolder.Callback {
        public class GraphicAppThread extends Thread {
                
                /** Message handler used by thread to post stuff back to the GameView */
                private Handler mHandler;
                /** Handle to the surface manager object we interact with */
                private SurfaceHolder mSurfaceHolder;
                
                private boolean mRun = false;
                
                private Bitmap mBitmapTest;
                
        private int mCanvasWidth;
        private int mCanvasHeight;
                
                
                public GraphicAppThread(SurfaceHolder surfaceHolder, Context context,
                Handler handler) {
                        // TODO Auto-generated constructor stub
                        
                        mSurfaceHolder = surfaceHolder;
                        mHandler = handler;
                        mContext = context;
                        
                        mBitmapTest = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.sheepicon);
                }
                
                
                public void doStart(){
                        synchronized (mSurfaceHolder) {
                // Init
                                mRun = true;
                                
            }
                }
                
                public void run() {
                        while (mRun) {
                Canvas c = null;
                try {
                    c = mSurfaceHolder.lockCanvas(null);
                    synchronized (mSurfaceHolder) {
                        doDraw(c);
                    }
                } 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) {
                        mSurfaceHolder.unlockCanvasAndPost(c);
                    }
                }
            }
                }
                
                public void doDraw(Canvas canvas){
                        canvas.drawARGB(255, 0, 0, 0);
                canvas.drawBitmap(mBitmapTest, 10, 10, new Paint());
                }
                
                public void pause(){
                        
                }
                
                /* Callback invoked when the surface dimensions change. */
        public void setSurfaceSize(int width, int height) {
            // synchronized to make sure these all change atomically
            synchronized (mSurfaceHolder) {
                mCanvasWidth = width;
                mCanvasHeight = height;
            }
        }
        }
        
        private GraphicAppThread thread;
        private Context mContext;
        
        public GraphicAppTestView(Context context, AttributeSet attrs) {
                super(context, attrs);
                
                SurfaceHolder holder = getHolder();
        holder.addCallback(this);
 
                
                thread = new GraphicAppThread(holder, context, new Handler() {
            @Override
            public void handleMessage(Message m) {
                // Use for pushing back messages.
            }
        });
                
                setFocusable(true); // make sure we get key events
        }
 
        public GraphicAppThread getThread(){
                return thread;
        }
        
        
        
        @Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width,
                        int height) {
                // TODO Auto-generated method stub
                thread.setSurfaceSize(width, height);
 
        }
 
        @Override
        public void surfaceCreated(SurfaceHolder holder) {
                // TODO Auto-generated method stub
                thread.start();
 
        }
 
        @Override
        public void surfaceDestroyed(SurfaceHolder holder) {
                // TODO Auto-generated method stub
 
        }
 
}
 
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main.xml

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<?xml version="1.0" encoding="utf-8"?>
 
<FrameLayout android:id="@+id/FrameLayout01" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
xmlns:android="http://schemas.android.com/apk/res/android">
 
        <com.example.graphicapptest.GraphicAppTestView
        android:id="@+id/graphictest"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"/>
      
        <LinearLayout android:id="@+id/LinearLayout01" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content">
                <TextView android:text="@+id/TextView01" 
                android:id="@+id/TextView01" 
                android:layout_width="wrap_content" 
                android:layout_height="wrap_content"></TextView>
        </LinearLayout>
</FrameLayout>
 
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I add the logcat
LOGCAT

09-25 18:46:16.183: INFO/jdwp(766): received file descriptor 20 from ADB

09-25 18:46:16.541: WARN/Resources(766): Converting to string: TypedValue{t=0x12/d=0x0 a=2 r=0x7f050003}

09-25 18:46:16.551: DEBUG/AndroidRuntime(766): Shutting down VM

09-25 18:46:16.551: WARN/dalvikvm(766): threadid=3: thread exiting with uncaught exception (group=0x4000fe70)

09-25 18:46:16.561: ERROR/AndroidRuntime(766): Uncaught handler: thread main exiting due to uncaught exception

09-25 18:46:16.571: ERROR/AndroidRuntime(766): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.graphicapptest/com.example.graphicapptest.GraphicAppTest}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2268)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.app.ActivityThread.access$1800(ActivityThread.java:112)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1692)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.os.Handler.dispatchMessage(Handler.java:99)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.os.Looper.loop(Looper.java:123)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.app.ActivityThread.main(ActivityThread.java:3948)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at java.lang.reflect.Method.invokeNative(Native Method)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at java.lang.reflect.Method.invoke(Method.java:521)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at dalvik.system.NativeStart.main(Native Method)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:281)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.app.Activity.requestWindowFeature(Activity.java:2556)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at com.example.graphicapptest.GraphicAppTest.onCreate(GraphicAppTest.java:20)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2231)

09-25 18:46:16.571: ERROR/AndroidRuntime(766): ... 11 more

09-25 18:46:16.601: INFO/Process(567): Sending signal. PID: 766 SIG: 3

09-25 18:46:16.601: INFO/dalvikvm(766): threadid=7: reacting to signal 3

09-25 18:46:16.651: INFO/dalvikvm(766): Wrote stack trace to '/data/anr/traces.txt'

09-25 18:46:25.904: WARN/ActivityManager(567): Launch timeout has expired, giving up wake lock!

Ferrat · by **Ferrat** » Fri Sep 25, 2009 8:06 pm

09-25 18:46:16.551: WARN/dalvikvm(766): threadid=3: thread exiting with uncaught exception (group=0x4000fe70)

09-25 18:46:16.561: ERROR/AndroidRuntime(766): Uncaught handler: thread main exiting due to uncaught exception

09-25 18:46:16.571: ERROR/AndroidRuntime(766): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.graphicapptest/com.example.graphicapptest.GraphicAppTest}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content

There is your first problem stopping it from even running, you have to grab that exception, then you can find out why it doesn't work but as it says you are missing requestFeature() aswell to start with.
Hope that helps you on the way.

also a tip, when bug-hunting, always look at the first error, most errors after it stand a good chance to be just errors derived from the first one.

3m3r1c · by **3m3r1c** » Fri Sep 25, 2009 8:56 pm

thank you for your answer I have locate the problem

in GraphicAppTest in onCreate if I comment the line

//requestWindowFeature(Window.FEATURE_NO_TITLE);

the program works. But I don't know why, and I want hidden the windows title

EDIT:

Ok that fine, I find my error. It was because I called requestWindowFeature(Window.FEATURE_NO_TITLE); after setContentView(R.layout.main);

Ferrat · by **Ferrat** » Fri Sep 25, 2009 9:42 pm

Looked at your code, just move the

requestWindowFeature(Window.FEATURE_NO_TITLE);

above the setContentView(R.layout.main);
and try that.

EDIT
Oh you did that, great =)

[SOLVED]Graphic problems

[SOLVED]Graphic problems

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