更改目录文件-Android Camera

我已经尝试了很多android相机的例子，但是（）是我保存图像并在图库中查看的第一个例子。但我想知道的是如何更改保存图像的文件夹。我认为实际上它将它们保存在

sdcard0/DCIM

上

以下是主要活动：

public class Foto extends Activity implements SurfaceHolder.Callback{

private LayoutInflater myInflater = null;
Camera myCamera;
byte[] tempdata;
boolean myPreviewRunning = false;
private SurfaceHolder mySurfaceHolder;
private SurfaceView mySurfaceView;
ImageButton takePicture;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    getWindow().setFormat(PixelFormat.TRANSLUCENT);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.foto);

    mySurfaceView = (SurfaceView) findViewById(R.id.surface);
    mySurfaceHolder = mySurfaceView.getHolder();
    mySurfaceHolder.addCallback(this);
    mySurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

    myInflater = LayoutInflater.from(this);
    View overView = myInflater.inflate(R.layout.segundacapa,null);
    this.addContentView(overView, new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));

    takePicture = (ImageButton) findViewById(R.id.button);
    takePicture.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            myCamera.takePicture(myShutterCallback, myPictureCallback, myJpeg);
        }
    });


}

ShutterCallback myShutterCallback = new ShutterCallback() {
    @Override
    public void onShutter() {
    }
};

PictureCallback myPictureCallback = new PictureCallback() {
    @Override
    public void onPictureTaken(byte[] data, Camera myCamera) {
        // TODO Auto-generated method stub
    }
};

PictureCallback myJpeg = new PictureCallback() {
    @Override
    public void onPictureTaken(byte[] data, Camera myCamera) {
        // TODO Auto-generated method stub
        if(data != null){
            tempdata = data;
            done();
        }
    }
};

void done(){
    Bitmap bm = BitmapFactory.decodeByteArray(tempdata, 0, tempdata.length);
    String url = Images.Media.insertImage(getContentResolver(), bm, null, null);
    bm.recycle();
    Bundle bundle = new Bundle();
    if(url != null){
        bundle.putString("url",url);
        Intent mIntent = new Intent();
        mIntent.putExtras(bundle);
        setResult(RESULT_OK, mIntent);
        Toast.makeText(this, "Picture saved on" + url, Toast.LENGTH_SHORT).show();
    }
    else{
        Toast.makeText(this, "Picture can not be saved", Toast.LENGTH_SHORT).show();
    }
    finish();
}

@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
    // TODO Auto-generated method stub
    try{
        if(myPreviewRunning){
            myCamera.stopPreview();
            myPreviewRunning = false;
        }
        Camera.Parameters p = myCamera.getParameters();
        p.setPreviewSize(width,height);

        myCamera.setParameters(p);
        myCamera.setPreviewDisplay(holder);
        myCamera.startPreview();
        myPreviewRunning = true;
    }catch(Exception e){}
}

@Override
public void surfaceCreated(SurfaceHolder holder) {
    // TODO Auto-generated method stub
        myCamera = Camera.open();
    }

@Override
public void surfaceDestroyed(SurfaceHolder holder) {
    // TODO Auto-generated method stub
    myCamera.stopPreview();
    myPreviewRunning = false;
    myCamera.release();
    myCamera = null;
    }       
}

还有一个XML布局，带有

SurfaceView

（称为

foto.XML

）和另一个带有按钮的

segundacapa.XML

---

非常感谢

您可以使用另一种风格的，采用您的文件路径，而不是使用Images.Media将图像存储在磁盘上（使用默认位置）。你应该先写这个文件。您不需要将

onPictureTaken（）->数据

转换为

位图

；只需将

字节[]

写入Jpeg文件即可

FileOutputStream fos = openFileOutput("saved.jpg", Context.MODE_PRIVATE);
fos.write(data);
fos.close();

您可以根据需要选择文件名；您可以使用其他参数保存文件（请参阅更多信息。如果愿意，您可以在/sdcard上打开wile，例如

FileOutputStream fos = new FileOutputStream("/sdcard/saved.jpg");

请注意，您需要请求写入SD卡的权限；请检查以下行是否出现在AndroidManifest.xml中：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />