1 package com.intsig.bcrsdk.demo.Activity;
2
3 import android.annotation.TargetApi;
4 import android.app.Activity;
5 import android.graphics.SurfaceTexture;
6 import android.hardware.camera2.CameraAccessException;
7 import android.hardware.camera2.CameraCaptureSession;
8 import android.hardware.camera2.CameraCharacteristics;
9 import android.hardware.camera2.CameraDevice;
10 import android.hardware.camera2.CameraManager;
11 import android.hardware.camera2.CaptureRequest;
12 import android.hardware.camera2.CaptureResult;
13 import android.hardware.camera2.TotalCaptureResult;
14 import android.os.Build;
15 import android.os.Bundle;
16 import android.os.Handler;
17 import android.os.HandlerThread;
18 import android.util.Log;
19 import android.view.Surface;
20 import android.view.TextureView;
21
22
23 import com.intsig.bcrsdkdemo.R;
24
25 import java.util.Arrays;
26
27
28 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
29 public class Camera2Activity extends Activity {
30 private TextureView textureView;
31 private String TAG="测试";
32
33 private HandlerThread mThreadHandler;
34 private Handler mHandler;
35
36 private CaptureRequest.Builder mPreviewBuilder;
37 @Override
38 protected void onCreate(Bundle savedInstanceState) {
39 super.onCreate(savedInstanceState);
40 setContentView(R.layout.activity_camera2);
41 mThreadHandler = new HandlerThread("CAMERA2");
42 mThreadHandler.start();
43 mHandler = new Handler(mThreadHandler.getLooper());
44
45 textureView= (TextureView) findViewById(R.id.tv);
46 textureView.setSurfaceTextureListener(textureListener);
47
48 }
49
50 private TextureView.SurfaceTextureListener textureListener=new TextureView.SurfaceTextureListener() {
51 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
52 @Override
53 public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int i, int i1) {
54 Log.e(TAG,"可用");
55
56 //CameraManaer 摄像头管理器，用于检测摄像头，打开系统摄像头
57 CameraManager cameraManager = (CameraManager) getSystemService(CAMERA_SERVICE);
58 try {
59 String[] CameraIdList=cameraManager.getCameraIdList();//获取可用相机列表
60 Log.e(TAG,"可用相机的个数是:"+CameraIdList.length);
61 CameraCharacteristics cameraCharacteristics=cameraManager.getCameraCharacteristics(CameraIdList[0]);//获取某个相机(摄像头特性)
62 cameraCharacteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);//检查支持
63
64 cameraManager.openCamera(CameraIdList[0],mCameraDeviceStateCallback, mHandler);
65 } catch (CameraAccessException e) {
66 e.printStackTrace();
67 }
68
69 }
70
71 @Override
72 public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int i, int i1) {
73 Log.e(TAG,"改变");
74 }
75
76 @Override
77 public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) {
78 Log.e(TAG,"释放");
79 return false;
80 }
81
82 @Override
83 public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) {
84 Log.e(TAG,"更新");
85 }
86 };
87
88 //CameraDeviceandroid.hardware.Camera也就是Camera1的Camera
89 private CameraDevice.StateCallback mCameraDeviceStateCallback = new CameraDevice.StateCallback() {
90 @Override
91 public void onOpened(CameraDevice camera) {
92 try {
93 startPreview(camera);
94 } catch (CameraAccessException e) {
95 e.printStackTrace();
96 }
97 }
98
99 @Override
100 public void onDisconnected(CameraDevice camera) {
101
102 }
103
104 @Override
105 public void onError(CameraDevice camera, int error) {
106
107 }
108 };
109
110
111 /**
112 * @param camera
113 * @throws CameraAccessException
114 * 开始预览
115 */
116 private void startPreview(CameraDevice camera) throws CameraAccessException {
117 SurfaceTexture texture = textureView.getSurfaceTexture();
118 texture.setDefaultBufferSize(textureView.getWidth(), textureView.getHeight());
119 Surface surface = new Surface(texture);
120 try {
121 //CameraRequest表示一次捕获请求，用来对z照片的各种参数设置，比如对焦模式、曝光模式等。CameraRequest.Builder用来生成CameraRequest对象
122 mPreviewBuilder = camera.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
123
124 } catch (CameraAccessException e) {
125 e.printStackTrace();
126 }
127 mPreviewBuilder.addTarget(surface);
128 camera.createCaptureSession(Arrays.asList(surface), mSessionStateCallback, mHandler);
129 }
130
131 //CameraCaptureSession 这个对象控制摄像头的预览或者拍照
132 //setRepeatingRequest()开启预览，capture()拍照
133 //StateCallback监听CameraCaptureSession的创建
134 private CameraCaptureSession.StateCallback mSessionStateCallback = new CameraCaptureSession.StateCallback() {
135 @Override
136 public void onConfigured(CameraCaptureSession session) {
137 Log.e(TAG,"相机创建成功！");
138 try {
139 session.capture(mPreviewBuilder.build(), mSessionCaptureCallback, mHandler);//拍照
140 session.setRepeatingRequest(mPreviewBuilder.build(), mSessionCaptureCallback, mHandler);//返回结果
141 } catch (CameraAccessException e) {
142 e.printStackTrace();
143 Log.e(TAG,"这里异常");
144 }
145 }
146
147 @Override
148 public void onConfigureFailed(CameraCaptureSession session) {
149 Log.e(TAG,"相机创建失败！");
150 }
151 };
152
153
154 //CameraCaptureSession.CaptureCallback监听拍照过程
155 private CameraCaptureSession.CaptureCallback mSessionCaptureCallback = new CameraCaptureSession.CaptureCallback() {
156
157 @Override
158 public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request, TotalCaptureResult result) {
159 Log.e(TAG,"这里接受到数据"+result.toString());
160 }
161
162 @Override
163 public void onCaptureProgressed(CameraCaptureSession session, CaptureRequest request, CaptureResult partialResult){
164
165 }};
166 }
