我想在触摸时捕捉图像。我正在使用表面视图，我已经应用了动作和动作向下参数。现在我想拍照而不使用任何意图。我已经制作了相机对象并尝试调用拍照或拍照参数，但这些参数不存在。有人可以帮我解决这个问题吗？
SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view);
surfaceView.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View view, MotionEvent event) {
if (event.getAction() == android.view.MotionEvent.ACTION_DOWN) {
Log.d("TouchTest", "Touch down");
} else if (event.getAction() == android.view.MotionEvent.ACTION_UP) {
Intent i =
new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
if (hasImageCaptureBug()) {
i.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
Uri.fromFile(new File("/sdcard/tmp")));
} else {
i.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
}
startActivityForResult(i,0);
Log.d("TouchTest", "Touch up");
}
return true;
}
答案 0 :(得分：0)
public class CameraLibrary extends Activity {
private MyPreview mPreview;
private final String LOG_TAG = "Camera Lib : CameraLibrary";
private Camera.Parameters cam_params;
private CameraOptions camOptions;
private String Flashmode = "auto";
private int Flashmodevalue = 0;
private int zoomMode = 0;
LinearLayout parentPreview;
private ImageView imgCapture;
private ImageView imgFlash;
private ImageView switchCam;
public static Bitmap bmp;
public static Bitmap bitmap;
String TEMP_PHOTO_FILE = "temporary_holder.jpg";
int REQ_FILE_CODE=3123;
Vibrator v1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try
{
mPreview = new MyPreview(this);
bmp=null;
v1=(Vibrator)getSystemService(VIBRATOR_SERVICE);
camOptions = CameraOptions.getInstance(this);
if (camOptions.getActionClick()== 0 || camOptions.getActionClick() >3)
throw new RuntimeException("Camera Options is not defined");
CreateMyView();
} catch (Exception e) {
e.printStackTrace();
}
}
private void CreateMyView(){
try {
setContentView(R.layout.camera_preview);
parentPreview=(LinearLayout)findViewById(R.id.preview);
imgCapture=(ImageView)findViewById(R.id.imageView1);
parentPreview.addView(mPreview);
[YOUR_SURFACE_VIEW_BUT_FIRST_TRY_WITH_A_BUTTON_INSTEAD].setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
v1.vibrate(35);
cam_params = mPreview.mCamera.getParameters();
switch(camOptions.getActionClick()){
case 1:
try{
mPreview.mCamera.takePicture(camOptions.getShutterCallback(),
camOptions.getRaw_PictureCallback(),
camOptions.getJPEG_PictureCallback());
}catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("Take Picture: " +e.getMessage());
}
break;
case 2:
try{
mPreview.mCamera.takePicture(camOptions.getShutterCallback(),
camOptions.getRaw_PictureCallback(),
camOptions.getJPEG_PictureCallback());
}catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("Take Picture: " +e.getMessage());
}
break;
case 3:
try{
mPreview.mCamera.takePicture(camOptions.getShutterCallback(),
camOptions.getRaw_PictureCallback(),
camOptions.getPostView_PictureCallback(),
camOptions.getJPEG_PictureCallback());
}catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("Take Picture: " +e.getMessage());
}
break;
default:
throw new RuntimeException("Take Picture Undefined");
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
try
{
mPreview.mCamera.stopPreview();
mPreview.mCamera.setPreviewCallback(null);
mPreview.mCamera.release();
mPreview.mCamera = null;
} catch (Exception e) {}
}
}
我的代码中编辑过的xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:visibility="visible">
<LinearLayout
android:id="@+id/preview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:orientation="horizontal"
android:visibility="visible" >
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:id="@id/menurl"
android:layout_width="50dp"
android:layout_height="fill_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:background="#4ccc"
android:padding="3dp"
android:orientation="vertical"
android:visibility="visible" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="45dp"
android:layout_height="45dp"
android:scaleType="fitXY"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:src="@drawable/camerabutton" />
</RelativeLayout>
</RelativeLayout>
public class CameraOptions {
private int ActionClick = 0;
private static Activity activity;
private int ResultCode=1;
BitmapFactory.Options bitmapOptions;
private static Context context;
private final String LOG_TAG = "Camera Lib : CameraOptions";
private static CameraOptions options;
public String PicPath;
private ShutterCallback mShutterCallback;
private PictureCallback mRaw_PictureCallback,
mPostView_PictureCallback,
mJPEG_PictureCallback;
private CameraOptions(){
}
public static CameraOptions getInstance(Activity _this){
context = _this.getApplicationContext();
activity = _this;
if (options == null)
options = new CameraOptions();
return options;
}
//Getters
public ShutterCallback getShutterCallback(){
return this.mShutterCallback;
}
public PictureCallback getRaw_PictureCallback(){
return this.mRaw_PictureCallback;
}
public PictureCallback getPostView_PictureCallback(){
return this.mPostView_PictureCallback;
}
public PictureCallback getJPEG_PictureCallback(){
return this.mJPEG_PictureCallback;
}
//Setters
public void setShutterCallback(ShutterCallback shutterCallback){
this.mShutterCallback = shutterCallback;
}
public void setRaw_PictureCallback(PictureCallback Raw_PictureCallback){
this.mRaw_PictureCallback = Raw_PictureCallback;
}
public void setPostView_PictureCallback(PictureCallback PostView_PictureCallback){
this.mPostView_PictureCallback = PostView_PictureCallback;
}
public void setJPEG_PictureCallback(PictureCallback JPEG_PictureCallback){
this.mRaw_PictureCallback = JPEG_PictureCallback;
}
public void takePicture(){
ShutterCallback shutter = new ShutterCallback(){public void onShutter(){}};
PictureCallback raw_pic = new PictureCallback(){public void onPictureTaken(byte[] data, Camera camera) {}};
PictureCallback postview_pic = new PictureCallback(){public void onPictureTaken(byte[] data, Camera camera) {}};
PictureCallback jpeg_pic = new PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
FileOutputStream fos ;
try
{
File f = new File(context.getCacheDir() + "/temp.jpg");
fos = new FileOutputStream(f);
fos.write(data);
fos.close();
bitmapOptions=new BitmapFactory.Options();
bitmapOptions.inJustDecodeBounds = false;
bitmapOptions.inPreferredConfig = Config.RGB_565;
bitmapOptions.inDither = true;
CameraLibrary.bmp=null;
CameraLibrary.bmp=BitmapFactory.decodeFile(context.getCacheDir() + "/temp.jpg",bitmapOptions);
try
{
f.delete();
} catch (Exception e) {
e.printStackTrace();
}
int nh = (int) ( CameraLibrary.bmp.getHeight() * (512.0 / CameraLibrary.bmp.getWidth()) );
CameraLibrary.bmp = Bitmap.createScaledBitmap(CameraLibrary.bmp, 512, nh, true);
PicPath = f.getAbsolutePath();
if(CameraLibrary.bmp!=null)
{
Intent i = new Intent(activity,AnimateBmp.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
activity.startActivity(i);
activity.overridePendingTransition(R.anim.fade_in_act, R.anim.fade_out_act);
}
else
{
activity.finish();
activity.overridePendingTransition(R.anim.fade_in_act, R.anim.fade_out_act);
}
f.delete();
} catch (Exception e) {
e.printStackTrace();
}
}
};
this.mShutterCallback = shutter;
this.mRaw_PictureCallback = raw_pic;
this.mPostView_PictureCallback = postview_pic;
this.mJPEG_PictureCallback = jpeg_pic;
ActionClick = 1;
}
public void takePicture(ShutterCallback shutterCallback ,
PictureCallback Raw_PictureCallback,
PictureCallback JPEG_PictureCallback){
this.mShutterCallback = shutterCallback;
this.mRaw_PictureCallback = Raw_PictureCallback;
this.mJPEG_PictureCallback = JPEG_PictureCallback;
ActionClick = 2;
}
public void takePicture(ShutterCallback shutterCallback ,
PictureCallback Raw_PictureCallback,
PictureCallback postView_PictureCallback,
PictureCallback JPEG_PictureCallback){
this.mShutterCallback = shutterCallback;
this.mRaw_PictureCallback = Raw_PictureCallback;
this.mPostView_PictureCallback = postView_PictureCallback;
this.mJPEG_PictureCallback = JPEG_PictureCallback;
ActionClick = 3;
}
public int getActionClick(){
return ActionClick;
}
public int getRequesCode(){
return ResultCode;
}
public void setRequesCode(int Request_Code){
ResultCode = Request_Code;
}
public String getFilePath(){
return PicPath;
}
public void setFilePath(String path){
this.PicPath= path;
}
}
public class MyPreview extends SurfaceView implements SurfaceHolder.Callback{
private SurfaceHolder mHolder;
public Camera mCamera;
private Context context;
public MyPreview(Context context){
super(context);
this.context = context;
mHolder = getHolder();
mHolder.addCallback(this);
// Added for devices before 3.0 else it crashes
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder){
try
{
if(mCamera == null)
mCamera = android.hardware.Camera.open(SectionListActivity.currentCameraId);
}catch(Exception ex){
Toast.makeText(getContext(), "Unable To Detect Camera" , 50).show();
System.exit(0);
}
try{
mCamera.setPreviewDisplay(mHolder);
mCamera.setPreviewCallback(new PreviewCallback() {
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
FileOutputStream fos = null;
try
{
fos = new FileOutputStream(context.getCacheDir()+"/temp.jpg");
fos.write(data);
fos.close();
}catch(Exception ex){
Toast.makeText(context, ex.getMessage(), 35).show();
ex.printStackTrace();
return;
}
MyPreview.this.invalidate();
}
});
}catch (Exception e) {
Toast.makeText(context, e.getMessage(), 35).show();
e.printStackTrace();
return;
}
}
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder){
if(mCamera != null) {
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
mCamera.release();
mCamera = null;
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int w , int h){
Camera.Parameters params = mCamera.getParameters();
mCamera.setParameters(params);
mCamera.startPreview();
}
public void clear(){
if(mCamera != null) {
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
mCamera.release();
mCamera = null;
}
}
public void getParametersInfo(){
}
}
看看这是否有帮助，如果你遇到任何问题，我会尝试回复...... thx