android 照相功能的简单实例

<uses-feature android:name="android.hardware.camera" /> 

private void dispatchTakePictureIntent(int actionCode) { 
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
    startActivityForResult(takePictureIntent, actionCode); 
} 

<PRE class=java name="code">@Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
        switch (requestCode) { 
        Bundle extras = intent.getExtras(); 
        Bitmap mImageBitmap = (Bitmap) extras.get("data"); 
        mImageView.setImageBitmap(mImageBitmap); 
}</PRE> 
<PRE></PRE> 
<PRE></PRE> 

Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
File f = null; 

            try { 
                f = setUpPhotoFile();  
                takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f)); 
            } catch (IOException e) { 
                e.printStackTrace(); 
                f = null; 
            } 

private File createImageFile() throws IOException { 
        // Create an image file name  
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date()); 
        String imageFileName = "IMG_"+ timeStamp + "_"; 
        File albumF = getAlbumDir(); 
        File imageF = File.createTempFile(imageFileName, "jpg", albumF); 
        return imageF; 
    } 

 
    private File setUpPhotoFile() throws IOException { 

        File f = createImageFile(); 
        mCurrentPhotoPath = f.getAbsolutePath(); 

        return f; 
    } 
private File getAlbumDir() { 
        File storageDir = null; 

 
        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) { 

            storageDir = mAlbumStorageDirFactory.getAlbumStorageDir(getAlbumName()); 

 
            if (storageDir != null) { 
                if (! storageDir.mkdirs()) { 
                    if (! storageDir.exists()){ 
                        Log.d("CameraSample", "failed to create directory"); 
                        return null; 
                    } 
                } 
            } 

        } else { 
            Log.v(getString(R.string.app_name), "External storage is not mounted READ/WRITE."); 
        } 

        return storageDir; 
    }