Android -OnPauseとWidgetLocker

Question

加速度計の動作をテストするための基本的なアプリケーションを作成しています。現在、私はこのような加速度計を登録して登録しています。

public void pause() {
    mSensorManager.unregisterListener(this);
}

public void resume(Context context) {
    mSensorManager.registerListener(this, mAccelerometer,     
            SensorManager.SENSOR_DELAY_FASTEST);        
}

アクセルメーターが子供のクラスで実行されているため、アクティビティによってトリガーされる一時停止および再開方法があります。画面をロックすると、プログラムが壊れます。私は実際にプログラムを再度動作させるためにプロセスを終了する必要があります。現在、WidgetLockerを使用しています。プログラムは、ストックロックスクリーンで正常に動作します。私の仮定は、履歴書が実行されないということです。

センサーが再登場者になることを確認する方法はありますか？彼らが通常のロックスクリーン以外のものを使用している場合、私のプログラムを壊したくありません。

編集：完全なソースが追加されました。この問題に関する主な論理は、Maingamepanel.javaの底で行われます

Tiltballactivity.java

package com.tornquist.nathan;

import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;

public class TiltBallActivity extends Activity{
    /** Called when the activity is first created. */
    MainGamePanel viewPanel;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //Window state functions.
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

        //This works without declaring a viewPanel instance here.
        //The instance declaration is needed to pass the 
        //onPause and onResume commands though.
        viewPanel = new MainGamePanel(this);
        setContentView(viewPanel);
    }

    //Restarts the accelerometer after onPause
    protected void onResume() {

        viewPanel.resume(this);
        super.onResume();
    }

    //Standard Method run when the Application loses focus.
    //This runs the pause() function in the viewPanel so that
    //the accelerometer can be paused.
    protected void onPause() {

        viewPanel.pause();
        super.onPause(); 
    }
}

mainthread.java

package com.tornquist.nathan;

import com.tornquist.nathan.MainGamePanel;
import android.graphics.Canvas;
import android.view.SurfaceHolder;

public class MainThread extends Thread {

    private SurfaceHolder surfaceHolder;
    private MainGamePanel gamePanel;
    private boolean running;
    public void setRunning(boolean running) {
        this.running = running;
    }

    public MainThread(SurfaceHolder surfaceHolder, MainGamePanel gamePanel) {
        super();
        this.surfaceHolder = surfaceHolder;
        this.gamePanel = gamePanel;
    }

    @Override
    public void run() 
    {
        Canvas canvas;
        while (running) {
            canvas = null;
            // try locking the canvas for exclusive pixel editing on the surface
            try {
                canvas = this.surfaceHolder.lockCanvas();
                synchronized (surfaceHolder) {
                    // update game state
                    this.gamePanel.update();

                    // draws the canvas on the panel
                    this.gamePanel.onDraw(canvas);
                }
            } finally {
                // in case of an exception the surface is not left in
                // an inconsistent state
                if (canvas != null) {
                    surfaceHolder.unlockCanvasAndPost(canvas);
                }
            }   // end finally
        }
    }
}

Maingamepanel.java

package com.tornquist.nathan;

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.view.Display;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class MainGamePanel extends SurfaceView implements SensorEventListener, SurfaceHolder.Callback 
{
    //Variable Declarations.
    private MainThread thread;
    public int xColor;
    public int yColor;
    public int zColor;

    public float xPos;
    public float yPos;
    public float oldXPos;
    public float oldYPos;

    public int screenWidth;
    public int screenHeight;

    private SensorManager mSensorManager;
    private Sensor mAccelerometer;    

    Paint paint;

    public MainGamePanel(Context context)
    {
        //Standard Initialization
        super(context);

        //This line adds a callback for the touch screen.  
        //This allows you to actually capture touch input.
        getHolder().addCallback(this);

        thread = new MainThread(getHolder(),this);

        xColor = 100;
        yColor = 100;
        zColor = 100;

        paint = new Paint();
        paint.setAntiAlias(true);

        Display display = ((Activity) context).getWindowManager().getDefaultDisplay(); 
        screenWidth = display.getWidth();
        screenHeight = display.getHeight();

        yPos = screenHeight/2;
        xPos = screenWidth/2;
        oldYPos = yPos;
        oldXPos = xPos;

        //This registers the accelerometer.  Without registering it, the onSensorChanged
        //event will never be called, and you cannot get the accelerometer values.
        mSensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);

        mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);

        mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_FASTEST);

        //Also required for touch input.
        setFocusable(true);
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width,
            int height) {
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        // at this point the surface is created and
        // we can safely start the game loop
        thread.setRunning(true);
        thread.start();
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        boolean retry = true;
        while (retry) {
            try {
                thread.join();
                retry = false;
            } catch (InterruptedException e) {
                // try again shutting down the thread
            }
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
                        // check if in the lower part of the screen we exit
            if (event.getY() > getHeight() - 50) {
                thread.setRunning(false);
                ((Activity)getContext()).finish();
            }

            if (xColor < 235)
                xColor = xColor + 20;
            else
                xColor = 0;
            if (yColor < 235)
                yColor = yColor + 20;
            else
                yColor = 0;
            if (zColor < 235)
                zColor = zColor + 20;
            else
                zColor = 0;

            yPos = event.getY();
            xPos = event.getX();
        }
        return true;
    }

    @Override
    protected void onDraw(Canvas canvas) 
    {
        //canvas.drawColor(Color.CYAN);
        canvas.drawColor(Color.rgb(xColor, yColor, zColor));
        int xInvert = (int) (255 - xColor);
        int yInvert = (int) (255 - yColor);
        int zInvert = (int) (255 - zColor);

        paint.setColor(Color.rgb(xInvert, yInvert, zInvert));
        paint.setStyle(Style.FILL);
        canvas.drawCircle(xPos, yPos, 50, paint);
    }

    public void update() {
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {        
    }

    @Override
    public void onSensorChanged(SensorEvent event) {

        oldYPos = yPos;
        oldXPos = xPos;

        xColor = (int) (255 + (event.values[0])*11);
        if (xColor > 255)
            xColor = 255;
        if (xColor < 0)
            xColor = 0;

        yColor = (int) (255 + (event.values[1])*11);
        if (yColor > 255)
            yColor = 255;
        if (yColor < 0)
            yColor = 0;

        zColor = (int) (255 + (event.values[2])*11);
        if (zColor > 255)
            zColor = 255;
        if (zColor < 0)
            zColor = 0;

        xPos = xPos + -1*(event.values[0])*5;
        yPos = yPos + event.values[1]*5;

        if (xPos < 50)
            xPos = 50;
        if (xPos > screenWidth - 50)
            xPos = screenWidth - 50;
        if (yPos < 50)
            yPos = 50;
        if (yPos > screenHeight - 50)
            yPos = screenHeight - 50;

        if ((oldYPos == yPos) && (oldXPos == xPos))
        {
            invalidate();
        }

    }

    public void pause() {
        mSensorManager.unregisterListener(this);

        //thread.setRunning(false);
        //((Activity)getContext()).finish();
    }

    public void resume(Context context) {
        //mSensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);

        //mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);

        mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_FASTEST);      
    }


}

Answer 1

Action_screen_onとAction_screen_off Intent Actionを使用できると思います。だからこのようなもの：

mReceiver = new BroadcastReceiver() {
     public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();
    if (Intent.ACTION_SCREEN_OFF.equals(action)) {
        //deregister
    }
    else if (Intent.ACTION_SCREEN_ON.equals(action)) {
        //register
    }
}};

IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
registerReceiver(mReceiver, filter); 

filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
registerReceiver(mReceiver, filter);

ondestroy（）メソッドでこの受信者を登録する

---

わかりました、私は解決策を見つけたと思います。 surfacedestroyedメソッドコードのthread.joinパーツは、何らかの形でアクティビティをブロックします。私はあなたのコードにいくつかの変更を加えました、そして、これは私のために働きます：

public MainGamePanel(Context context)
{
    ...

    //Also required for touch input.
    setFocusable(true);

    //start thread
    thread.setRunning(true);
    thread.start();
}

@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
        int height) {
}

@Override
public void surfaceCreated(SurfaceHolder holder) {
    //continue the thread
    synchronized (thread) {
        thread.pleaseWait = false;
        thread.notifyAll();
    }
}

@Override
public void surfaceDestroyed(SurfaceHolder holder) {
    //pause the thread
    synchronized (thread) {
        thread.pleaseWait = true;
    }
}

そしてスレッドクラス

public class MainThread extends Thread {

private SurfaceHolder surfaceHolder;
private MainGamePanel gamePanel;
private boolean running;
public boolean pleaseWait = true;
public void setRunning(boolean running) {
    this.running = running;
}

public MainThread(SurfaceHolder surfaceHolder, MainGamePanel gamePanel) {
    super();
    this.surfaceHolder = surfaceHolder;
    this.gamePanel = gamePanel;
}

@Override
public void run() 
{
    Canvas canvas;
    while (running) {
        if(!pleaseWait) {
            canvas = null;
            // try locking the canvas for exclusive pixel editing on the surface
            try {
                canvas = this.surfaceHolder.lockCanvas();
                synchronized (surfaceHolder) {
                    // update game state
                    this.gamePanel.update();

                    // draws the canvas on the panel
                    this.gamePanel.onDraw(canvas);
                }
            } finally {
                // in case of an exception the surface is not left in
                // an inconsistent state
                if (canvas != null) {
                    surfaceHolder.unlockCanvasAndPost(canvas);
                }
            }   // end finally            
        }
        else {
            synchronized (this) {
                try {
                    wait();
                } catch (Exception e) { }
            }
        }
    }
}
}

Ondestroyメソッドのスレッドを破壊します

Answer 2

RegisterとOndestroy（）にOnCreate（）を使用してUnregisterを使用している場合、問題は解決します。画面がロックされている間、あなたのdestoryが呼び出されることはありません。それがあなたの問題を解決するかもしれません。