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在我的應用程序中，我需要使用定製相機。屏幕上有兩個按鈕「保留圖像」和「重拍照片」。當我點擊「保留圖像」按鈕時，由攝像頭拍攝的圖像應保存在指定的目錄中。當我點擊「重拍照片」按鈕時，攝像頭應準備好拍攝新照片。我已經搜索了相同的，我有一個堆棧溢出鏈接，我試圖在我的應用程序中實現，但問題是所有的代碼拍照和保存圖片寫在同一類。拍攝的照片將自動保存，無需點擊按鈕。我想改變這一點。我嘗試過不同的方式，但拋出錯誤。在android中定製相機
請幫我...下面給出低於給我的Java代碼
public class CustomCameraDemo extends Activity {
private SurfaceView preview=null;
private SurfaceHolder previewHolder=null;
public Camera camera=null;
private boolean inPreview=false;
//ImageView image;
Bitmap bmp,itembmp;
static Bitmap mutableBitmap;
PointF start = new PointF();
PointF mid = new PointF();
float oldDist = 1f;
File imageFileName = null;
File imageFileFolder = null;
private MediaScannerConnection msConn;
Display d; int screenhgt,screenwdh;
ProgressDialog dialog;
Button save;
Button retake;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// image=(ImageView)findViewById(R.id.image);
save=(Button)findViewById(R.id.Save);
retake=(Button)findViewById(R.id.Retake);
preview=(SurfaceView)findViewById(R.id.surface);
previewHolder=preview.getHolder();
previewHolder.addCallback(surfaceCallback);
previewHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
previewHolder.setFixedSize(getWindow().getWindowManager()
.getDefaultDisplay().getWidth(), getWindow().getWindowManager()
.getDefaultDisplay().getHeight());
save.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
}
});
retake.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
}
});
}
@Override public void onResume() {
super.onResume();
camera=Camera.open();
}
@Override public void onPause() {
if (inPreview) {
camera.stopPreview(); }
camera.release();
camera=null;
inPreview=false;
super.onPause();
}
private Camera.Size getBestPreviewSize(int width, int height,Camera.Parameters parameters){
Camera.Size result=null;
for (Camera.Size size : parameters.getSupportedPreviewSizes())
{
if (size.width<=width && size.height<=height)
{
if (result==null) {
result=size;
} else {
int resultArea=result.width*result.height;
int newArea=size.width*size.height;
if (newArea>resultArea) {
result=size;
}
}
}
}
return(result);
}
SurfaceHolder.Callback surfaceCallback=new SurfaceHolder.Callback(){
public void surfaceCreated(SurfaceHolder holder) {
try {
camera.setPreviewDisplay(previewHolder);
} catch (Throwable t) {
Log.e("PreviewDemo-surfaceCallback",
"Exception in setPreviewDisplay()", t);
Toast.makeText(CustomCameraDemo.this, t.getMessage(), Toast.LENGTH_LONG).show();
}
}
public void surfaceChanged(SurfaceHolder holder,int format, int width,int height) {
Camera.Parameters parameters=camera.getParameters();
Camera.Size size=getBestPreviewSize(width, height,
parameters);
if (size!=null) {
parameters.setPreviewSize(size.width, size.height);
camera.setParameters(parameters);
camera.startPreview();
inPreview=true;
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
}
};
Camera.PictureCallback photoCallback=new Camera.PictureCallback(){
public void onPictureTaken(final byte[] data, final Camera camera){
dialog=ProgressDialog.show(CustomCameraDemo.this,"","Saving Photo");
new Thread(){
public void run(){
try{
Thread.sleep(1000);
}
catch(Exception ex){}
onPictureTake(data,camera);
}
}.start();
}
};
public void onPictureTake(byte[] data, Camera camera){
bmp = BitmapFactory.decodeByteArray(data, 0, data.length);
mutableBitmap = bmp.copy(Bitmap.Config.ARGB_8888, true);
savePhoto(mutableBitmap);
dialog.dismiss();
}
class SavePhotoTask extends AsyncTask<byte[], String, String> {
@Override
protected String doInBackground(byte[]... jpeg) {
File photo=new File(Environment.getExternalStorageDirectory(),"photo.jpg");
if (photo.exists()){
photo.delete();
} try {
FileOutputStream fos=new FileOutputStream(photo.getPath());
fos.write(jpeg[0]);
fos.close();
} catch (java.io.IOException e) {
Log.e("PictureDemo", "Exception in photoCallback", e);
}
return(null);
}
}
public void savePhoto(Bitmap bmp) {
imageFileFolder = new File(Environment.getExternalStorageDirectory(),"MyMedicalRecords");
imageFileFolder.mkdir();
FileOutputStream out = null;
Calendar c = Calendar.getInstance();
String date = fromInt(c.get(Calendar.MONTH))+ fromInt(c.get(Calendar.DAY_OF_MONTH))
+ fromInt(c.get(Calendar.YEAR))
+ fromInt(c.get(Calendar.HOUR_OF_DAY))
+ fromInt(c.get(Calendar.MINUTE))
+ fromInt(c.get(Calendar.SECOND));
imageFileName = new File(imageFileFolder, date.toString() + ".jpg");
try { out = new FileOutputStream(imageFileName);
bmp.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush(); out.close();
scanPhoto(imageFileName.toString());
out = null;
} catch (Exception e) { e.printStackTrace(); }
}
public String fromInt(int val) {
return String.valueOf(val);
}
public void scanPhoto(final String imageFileName) {
msConn = new MediaScannerConnection(CustomCameraDemo.this,new MediaScannerConnectionClient() {
public void onMediaScannerConnected() {
msConn.scanFile(imageFileName, null);
Log.i("msClient obj in Photo Utility","connection established");
}
public void onScanCompleted(String path, Uri uri) {
msConn.disconnect(); Log.i("msClient obj in Photo Utility","scan completed");
}
});
msConn.connect();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event){ if (
keyCode == KeyEvent.KEYCODE_MENU&& event.getRepeatCount() == 0)
{
onBack();
}
return super.onKeyDown(keyCode, event);
}
public void onBack(){ Log.e("onBack :","yes");
camera.takePicture(null,null,photoCallback);
inPreview=false;
}
}
是我的主要佈局
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<android.view.SurfaceView
android:id="@+id/surface"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
<Button android:layout_width="150dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="Keep Photo"
android:id="@+id/Save"></Button>
<TextView android:layout_below="@+id/surface"
android:layout_width="wrap_content"
android:id="@+id/textView1"
android:layout_height="wrap_content"
android:text=""
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"></TextView>
<Button android:layout_width="150dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_toRightOf="@+id/textView1"
android:text="Retake Photo"
android:id="@+id/Retake"></Button> </RelativeLayout>
我沒有得到正確的答案，那麼我該如何接受呢？ :( –
試試這個鏈接http://stackoverflow.com/questions/8543244/custom-camera-android/8543376#8543376 – surendra
我在我的應用程序中實現了相同的...但我不能做按鈕點擊保存任務..那是我的問題 –