自定义相机、取景框、自动聚焦、闪光灯、照相机切换

package org.zhx.view.camera.ui; import android.annotation.TargetApi; import android.app.Activity; import android.content.Context; import android.content.res.Configuration; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.ImageFormat; import android.graphics.Matrix; import android.graphics.Point; import android.graphics.Rect; import android.hardware.Camera; import android.hardware.Camera.AutoFocusCallback; import android.hardware.Camera.Parameters; import android.hardware.Camera.PictureCallback; import android.os.Build; import android.os.Environment; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceHolder.Callback; import android.view.SurfaceView; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageView; import org.zhx.view.R; import org.zhx.view.camera.util.DisplayUtil; import org.zhx.view.camera.widget.OverlayView; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; public class ZCameraBaseAcitivy extends Activity implements Callback, OnClickListener { private static final String TAG = ZCameraBaseAcitivy.class.getSimpleName(); public static BitmapFactory.Options opt; static { // 缩小原图片大小 opt = new BitmapFactory.Options(); opt.inSampleSize = 2; } private SurfaceView surfaceView; private SurfaceHolder mHolder; private Camera mCamera; private boolean isPreview = false; private Point displayPx; private ImageView tpImg, showImg; private Button saveBtn; // 取景框 private OverlayView overlayView; private Rect rect; private boolean isTake = false; private String[] flashMedols = {Parameters.FLASH_MODE_AUTO, Parameters.FLASH_MODE_ON, Parameters.FLASH_MODE_OFF, Parameters.FLASH_MODE_TORCH}; private int[] modelResId = {R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher}; /** * 切换摄像头 */ private ImageView swImg; private ImageView flashModelImg; /** * 当前是否是前置摄像头 */ private boolean isFrontCamera = false; int modelIndex = 0; protected void onCreate(android.os.Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); displayPx = DisplayUtil.getScreenMetrics(this); surfaceView = (SurfaceView) findViewById(R.id.z_base_camera_preview); tpImg = (ImageView) findViewById(R.id.z_take_pictrue_img); saveBtn = (Button) findViewById(R.id.z_base_camera_save); showImg = (ImageView) findViewById(R.id.z_base_camera_showImg); overlayView = (OverlayView) findViewById(R.id.z_base_camera_over_img); swImg = (ImageView) findViewById(R.id.btn_switch_camera); swImg.setOnClickListener(this); flashModelImg = (ImageView) findViewById(R.id.btn_flash_mode); flashModelImg.setOnClickListener(this); // 设置取景框的 magin 这里最好 将 这些从dp 转化为px; 距 左 、上 、右、下的 距离 单位是dp rect = DisplayUtil.createCenterScreenRect(this, new Rect(50, 200, 50, 200));// 取景框的大小 overlayView.setmCenterRect(rect); saveBtn.setOnClickListener(this); showImg.setOnClickListener(this); tpImg.setOnClickListener(this); mHolder = surfaceView.getHolder(); mHolder.addCallback(this); mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } @Override public void surfaceCreated(SurfaceHolder holder) { // TODO Auto-generated method stub openCamera(); } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); if (mCamera != null) { if (isPreview) { mCamera.stopPreview(); mCamera.release(); mCamera = null; isPreview = false; } } } @Override protected void onRestart() { // TODO Auto-generated method stub super.onRestart(); initCamera(); } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // TODO Auto-generated method stub initCamera(); } @Override public void surfaceDestroyed(SurfaceHolder holder) { // TODO Auto-generated method stub // 当holder被回收时 释放硬件 releaseCamera(); } private void releaseCamera() { if (mCamera != null) { if (isPreview) { mCamera.stopPreview(); } mCamera.release(); mCamera = null; } isPreview = false; } private void switchCamera() throws Exception { isFrontCamera = !isFrontCamera; releaseCamera(); openCamera(); initCamera(); } @TargetApi(Build.VERSION_CODES.GINGERBREAD) private void openCamera() { if (!isFrontCamera) { mCamera = Camera.open(); } else { Camera.CameraInfo cameraInfo = new Camera.CameraInfo(); for (int i = 0; i < Camera.getNumberOfCameras(); i++) { Camera.getCameraInfo(i, cameraInfo); { if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { mCamera = Camera.open(i); isFrontCamera = true; } } } } } /** */ public void initCamera() { if (mCamera != null && !isPreview) { try { Camera.Parameters parameters = mCamera.getParameters(); // 设置闪光灯为自动 前置摄像头时 不能设置 if (!isFrontCamera) { parameters.setFlashMode(Parameters.FLASH_MODE_AUTO); } resetCameraSize(parameters); // 设置图片格式 parameters.setPictureFormat(ImageFormat.JPEG); // 设置JPG照片的质量 parameters.set("jpeg-quality", 100); // 通过SurfaceView显示取景画面 mCamera.setPreviewDisplay(mHolder); // 开始预览 mCamera.startPreview(); } catch (IOException e) { e.printStackTrace(); } isPreview = true; } } /** * 旋转相机和设置预览大小 */ public void resetCameraSize(Parameters parameters) { if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) { mCamera.setDisplayOrientation(90); } else { mCamera.setDisplayOrientation(0); } List<Camera.Size> sizeList = parameters.getSupportedPreviewSizes(); if (sizeList.size() > 0) { Camera.Size cameraSize = sizeList.get(0); // 设置预览图片大小 为设备长宽 parameters.setPreviewSize(cameraSize.width, cameraSize.height); } sizeList = parameters.getSupportedPictureSizes(); if (sizeList.size() > 0) { Camera.Size cameraSize = sizeList.get(0); for (Camera.Size size : sizeList) { if (size.width * size.height == displayPx.x * displayPx.y) { cameraSize = size; break; } } // 设置图