CustomCamera 简单的自定义拍照（抽离zxingdemo的相机管理进行修改）
工程目录gradle
allprojects {
repositories {
maven { url 'https://jitpack.io' }
}
}
项目gradle
dependencies {
implementation 'com.github.BugSir:CustomCamera:1.0.0'
}
CameraManagerUtil .with (this )
.setCropView (cropView )//截取区域view
.setSurfaceView (surfaceView )//
.setCameraCallback (this )//相机回调
.setBeepResId (resId )//拍照声音（不调用此方法就不会调用播放声音）
.setHasStatusBar (true );//是否要扣掉状态栏 然后在onresume(),onWindowFocusChanged(),onPause(),onDestroy()实现相应的方法。 @ Override
public void onWindowFocusChanged (boolean hasFocus ) {
super .onWindowFocusChanged (hasFocus );
mCameraUtil .onWindowFocusChanged ();
}
@ Override
protected void onResume () {
super .onResume ();
if (ActivityCompat .checkSelfPermission (this , Manifest .permission .CAMERA )== PackageManager .PERMISSION_GRANTED )
{
mCameraUtil .onResume ();
}else
{
ActivityCompat .requestPermissions (this ,new String []{Manifest .permission .CAMERA },888 );
}
}
@ Override
protected void onPause () {
mCameraUtil .onPause ();
super .onPause ();
}
@ Override
protected void onDestroy () {
mCameraUtil .onDestory ();
mCameraUtil =null ;
super .onDestroy ();
}public interface ICameraCallback {
void cameraError ();//相机调用出错会回调回来，在这里做提示，提醒用户
void takePhotoSuccess ();//拍照成功回调
}mCameraUtil .takePhoto ();//成功会回调takePhotoSuccess（） Bitmap bitmap =mCameraUtil .getPhotoResult ();//此方法会截取你限定范围内的照片内容，故最好放在异步线程里操作 
