Camera用の土台の作成

MainActivity.java

package utsunomiya.gclue.com.camerasample;

import android.content.Context;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

class CameraView extends SurfaceView implements SurfaceHolder.Callback {

    /** LOGCAT用のTAG. */
    private static final String TAG = "CAMERA_VIEW";

    CameraView(Context context) {
        super(context);

        getHolder().addCallback(this);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        Log.d(TAG, "onLayout l:"+l+"t:"+t+"r:"+r+"b:"+b);
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        Log.d(TAG, "surfaceCreated");
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        Log.d(TAG, "surfaceChanged format:"+format+"width:"+width+"height:"+height);
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        Log.d(TAG, "surfaceDestroyed");
    }
}

CameraView.java

package utsunomiya.gclue.com.camerasample;

import android.content.Context;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

class CameraView extends SurfaceView implements SurfaceHolder.Callback {

    /** LOGCAT用のTAG. */
    private static final String TAG = "CAMERA_VIEW";

    CameraView(Context context) {
        super(context);

        getHolder().addCallback(this);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        Log.d(TAG, "onLayout l:"+l+"t:"+t+"r:"+r+"b:"+b);
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        Log.d(TAG, "surfaceCreated");
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        Log.d(TAG, "surfaceChanged format:"+format+"width:"+width+"height:"+height);
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        Log.d(TAG, "surfaceDestroyed");
    }
}

SurfaceHolder.Callbackを実装する事で、SurfaceViewが生成された時、破棄された時、状態がかわった時に処理を追加する事が可能になります。