如何打開一個前面的相機作爲選擇選擇照片選擇設置彈出棉花糖和高達6.0

Question

當我選擇從設置選項打開相機採取個人資料照片時，它打開相機默認在棉花糖但棉花糖低於做工精細，所以我想前置攝像頭爲默認高達棉花糖開放

Answer 1

我使用此代碼它幫我...

package com.oreillyschool.android2.cameraadvanced; 

import java.io.IOException; 

import android.app.Activity; 
import android.content.Intent; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.hardware.Camera; 
import android.hardware.Camera.PictureCallback; 
import android.os.Bundle; 
import android.view.SurfaceHolder; 
import android.view.SurfaceView; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.ImageView; 
import android.widget.Toast; 

public class CameraActivity extends Activity implements PictureCallback, SurfaceHolder.Callback { 

    public static final String EXTRA_CAMERA_DATA = "camera_data"; 

    private static final String KEY_IS_CAPTURING = "is_capturing"; 

    private Camera mCamera; 
    private ImageView mCameraImage; 
    private SurfaceView mCameraPreview; 
    private Button mCaptureImageButton; 
    private byte[] mCameraData; 
    private boolean mIsCapturing; 

    private OnClickListener mCaptureImageButtonClickListener = new OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     captureImage(); 
    } 
    }; 

    private OnClickListener mRecaptureImageButtonClickListener = new OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     setupImageCapture(); 
    } 
    }; 

    private OnClickListener mDoneButtonClickListener = new OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     if (mCameraData != null) { 
     Intent intent = new Intent(); 
     intent.putExtra(EXTRA_CAMERA_DATA, mCameraData); 
     setResult(RESULT_OK, intent); 
     } else { 
     setResult(RESULT_CANCELED); 
     } 
     finish(); 
    } 
    }; 

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

    setContentView(R.layout.activity_camera); 

    mCameraImage = (ImageView) findViewById(R.id.camera_image_view); 
    mCameraImage.setVisibility(View.INVISIBLE); 

    mCameraPreview = (SurfaceView) findViewById(R.id.preview_view); 
    final SurfaceHolder surfaceHolder = mCameraPreview.getHolder(); 
    surfaceHolder.addCallback(this); 
    surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 

    mCaptureImageButton = (Button) findViewById(R.id.capture_image_button); 
    mCaptureImageButton.setOnClickListener(mCaptureImageButtonClickListener); 

    final Button doneButton = (Button) findViewById(R.id.done_button); 
    doneButton.setOnClickListener(mDoneButtonClickListener); 

    mIsCapturing = true; 
    } 

    @Override 
    protected void onSaveInstanceState(Bundle savedInstanceState) { 
    super.onSaveInstanceState(savedInstanceState); 

    savedInstanceState.putBoolean(KEY_IS_CAPTURING, mIsCapturing); 
    } 

    @Override 
    protected void onRestoreInstanceState(Bundle savedInstanceState) { 
    super.onRestoreInstanceState(savedInstanceState); 

    mIsCapturing = savedInstanceState.getBoolean(KEY_IS_CAPTURING, mCameraData == null); 
    if (mCameraData != null) { 
     setupImageDisplay(); 
    } else { 
     setupImageCapture(); 
    } 
    } 

    @Override 
    protected void onResume() { 
    super.onResume(); 

    if (mCamera == null) { 
     try { 
     mCamera = Camera.open();    
     mCamera.setPreviewDisplay(mCameraPreview.getHolder()); 
     if (mIsCapturing) { 
      mCamera.startPreview(); 
     } 
     } catch (Exception e) { 
     Toast.makeText(CameraActivity.this, "Unable to open camera.", Toast.LENGTH_LONG) 
     .show(); 
     } 
    } 
    } 

    @Override 
    protected void onPause() { 
    super.onPause(); 

    if (mCamera != null) { 
     mCamera.release(); 
     mCamera = null; 
    } 
    } 

    @Override 
    public void onPictureTaken(byte[] data, Camera camera) { 
    mCameraData = data; 
    setupImageDisplay(); 
    } 

    @Override 
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { 
    if (mCamera != null) { 
     try { 
     mCamera.setPreviewDisplay(holder); 
     if (mIsCapturing) { 
      mCamera.startPreview(); 
     } 
     } catch (IOException e) { 
     Toast.makeText(CameraActivity.this, "Unable to start camera preview.", Toast.LENGTH_LONG).show(); 
     } 
    } 
    } 

    @Override 
    public void surfaceCreated(SurfaceHolder holder) { 
    } 

    @Override 
    public void surfaceDestroyed(SurfaceHolder holder) { 
    } 

    private void captureImage() { 
    mCamera.takePicture(null, null, this); 
    } 

    private void setupImageCapture() { 
    mCameraImage.setVisibility(View.INVISIBLE); 
    mCameraPreview.setVisibility(View.VISIBLE); 
    mCamera.startPreview(); 
    mCaptureImageButton.setText(R.string.capture_image); 
    mCaptureImageButton.setOnClickListener(mCaptureImageButtonClickListener); 
    } 

    private void setupImageDisplay() { 
    Bitmap bitmap = BitmapFactory.decodeByteArray(mCameraData, 0, mCameraData.length); 
    mCameraImage.setImageBitmap(bitmap); 
    mCamera.stopPreview(); 
    mCameraPreview.setVisibility(View.INVISIBLE); 
    mCameraImage.setVisibility(View.VISIBLE); 
    mCaptureImageButton.setText(R.string.recapture_image); 
    mCaptureImageButton.setOnClickListener(mRecaptureImageButtonClickListener); 
    } 
}