{"id":25073,"date":"2024-05-08T09:36:25","date_gmt":"2024-05-08T01:36:25","guid":{"rendered":"https:\/\/www.zhidianwl.net\/zhidianwl\/?p=25073"},"modified":"2024-05-08T09:36:25","modified_gmt":"2024-05-08T01:36:25","slug":"app%e5%bc%80%e5%8f%91%e4%b8%ad%e5%a6%82%e4%bd%95%e8%b0%83%e5%8a%a8%e7%9b%b8%e6%9c%ba%e5%8f%82%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.net\/zhidianwl\/2024\/05\/08\/app%e5%bc%80%e5%8f%91%e4%b8%ad%e5%a6%82%e4%bd%95%e8%b0%83%e5%8a%a8%e7%9b%b8%e6%9c%ba%e5%8f%82%e6%95%b0\/","title":{"rendered":"app\u5f00\u53d1\u4e2d\u5982\u4f55\u8c03\u52a8\u76f8\u673a\u53c2\u6570?"},"content":{"rendered":"<p>\u5728app\u5f00\u53d1\u4e2d\uff0c\u8c03\u7528\u76f8\u673a\u53c2\u6570\u662f\u5b9e\u73b0\u62cd\u7167\u3001\u5f55\u50cf\u7b49\u529f\u80fd\u7684\u5173\u952e\u6b65\u9aa4\u4e4b\u4e00\u3002\u4e0b\u9762\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728app\u4e2d\u8c03\u7528\u76f8\u673a\u53c2\u6570\u7684\u539f\u7406\u548c\u8be6\u7ec6\u6b65\u9aa4\u3002<\/p>\n<p>1. \u539f\u7406<\/p>\n<p>\u8c03\u7528\u76f8\u673a\u53c2\u6570\u7684\u539f\u7406\u662f\u901a\u8fc7\u7cfb\u7edf\u63d0\u4f9b\u7684\u76f8\u673aAPI\u6765\u8bbf\u95ee\u76f8\u673a\u786c\u4ef6\uff0c\u5e76\u8bbe\u7f6e\u76f8\u673a\u7684\u5404\u79cd\u53c2\u6570\u3002Android\u7cfb\u7edf\u4e2d\uff0c\u76f8\u673aAPI\u4e3b\u8981\u5305\u62ecCamera\u7c7b\u548cCamera2\u7c7b\u3002Camera\u7c7b\u662fAndroid\u65e9\u671f\u7248\u672c\u4e2d\u7684\u76f8\u673aAPI\uff0c\u800cCamera2\u7c7b\u662fAndroid 5.0\u53ca\u4ee5\u4e0a\u7248\u672c\u4e2d\u5f15\u5165\u7684\u65b0\u76f8\u673aAPI\u3002<\/p>\n<p>2. \u6b65\u9aa4<\/p>\n<p>\u4e0b\u9762\u4ee5Android\u5e73\u53f0\u4e3a\u4f8b\uff0c\u4ecb\u7ecd\u8c03\u7528\u76f8\u673a\u53c2\u6570\u7684\u8be6\u7ec6\u6b65\u9aa4\uff1a<\/p>\n<p>\u6b65\u9aa4\u4e00\uff1a\u6dfb\u52a0\u6743\u9650<\/p>\n<p>\u5728AndroidManifest.xml\u6587\u4ef6\u4e2d\uff0c\u6dfb\u52a0\u76f8\u673a\u6743\u9650\uff1a<\/p>\n<p>&#8220;`xml<\/p>\n<\/p>\n<p>&#8220;`<\/p>\n<p>\u6b65\u9aa4\u4e8c\uff1a\u83b7\u53d6<a href=\"https:\/\/www.yimenapp.com\/\">APP\u5f00\u53d1<\/a>\u76f8\u673a\u5b9e\u4f8b<\/p>\n<p>\u901a\u8fc7Camera\u7c7b\u6216Camera2\u7c7b\u83b7\u53d6\u76f8\u673a\u5b9e\u4f8b\u3002\u5728Android 5.0\u53ca\u4ee5\u4e0a\u7248\u672c\u4e2d\uff0c\u63a8\u8350\u4f7f\u7528Camera2\u7c7b\u3002\u5177\u4f53\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>\/\/ \u4f7f\u7528Camera\u7c7b<\/p>\n<p>Camera camera = Camera.open();<\/p>\n<p>\/\/ \u4f7f\u7528Camera2\u7c7b<\/p>\n<p>CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);<\/p>\n<p>String cameraId = cameraManager.getCameraIdList()[0];<\/p>\n<p>cameraManager.openCamera(cameraId, new CameraDevice.StateCallback() {<\/p>\n<p>    @Override<\/p>\n<p>    public void o<\/p>\n<p><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.cdn.yimenapp.com\/ag\/98\/sucai\/10.jpg\" \/><\/figure>\n<\/p>\n<p>nOpened(@NonNull CameraDevice camera) {<\/p>\n<p>        \/\/ \u76f8\u673a\u6253\u5f00\u6210\u529f\u540e\u7684\u56de\u8c03<\/p>\n<p>    }<\/p>\n<p>    @Override<\/p>\n<p>    public void onDisconnected(@NonNull CameraDevice camera) {<\/p>\n<p>        \/\/ \u76f8\u673a\u65ad\u5f00\u8fde\u63a5\u540e\u7684\u56de\u8c03<\/p>\n<p>    }<\/p>\n<p>    @Override<\/p>\n<p>    public void onError(@NonNull CameraDevice camera, int error) {<\/p>\n<p>        \/\/ \u76f8\u673a\u6253\u5f00\u5931\u8d25\u540e\u7684\u56de\u8c03<\/p>\n<p>    }<\/p>\n<p>}, null);<\/p>\n<p>&#8220;`<\/p>\n<p>\u6b65\u9aa4\u4e09\uff1a\u8bbe\u7f6e\u76f8\u673a\u53c2\u6570<\/p>\n<p>\u901a\u8fc7Camera.Parameters\u7c7b\u6216CameraCharacteristics\u7c7b\u8bbe\u7f6e\u76f8\u673a\u53c2\u6570\u3002\u5177\u4f53\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>\/\/ \u4f7f\u7528Camera.Parameters\u7c7b<\/p>\n<p>Camera.Parameters parameters = camera.getParameters();<\/p>\n<p>parameters.setPictureSize(width, height);<\/p>\n<p>parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);<\/p>\n<p>camera.setParameters(parameters);<\/p>\n<p>\/\/ \u4f7f\u7528CameraCharacteristics\u7c7b<\/p>\n<p>CameraCharacteristics characteristics = cameraManager.getCameraCharacteristics(cameraId);<\/p>\n<p>StreamConfigurationMap map = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);<\/p>\n<p>Size[] sizes = map.getOutputSizes(SurfaceTexture.class);<\/p>\n<p>int width = sizes[0].getWidth();<\/p>\n<p>int height = sizes[0].getHeight();<\/p>\n<p>&#8220;`<\/p>\n<p>\u6b65\u9aa4\u56db\uff1a\u9884\u89c8\u548c\u62cd\u7167\/\u5f55\u50cf<\/p>\n<p>\u901a\u8fc7SurfaceView\u6216TextureView\u6765\u5b9e\u73b0\u76f8\u673a\u9884\u89c8\uff0c\u5e76\u901a\u8fc7Camera\u7c7b\u6216Camera2\u7c7b\u7684\u65b9\u6cd5\u6765\u62cd\u7167\u6216\u5f55\u50cf\u3002\u5177\u4f53\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>\/\/ \u4f7f\u7528SurfaceView\u9884\u89c8\u548c\u62cd\u7167<\/p>\n<p>SurfaceView surfaceView = findViewById(R.id.surfaceView);<\/p>\n<p>SurfaceHolder surfaceHolder = surfaceView.getHolder();<\/p>\n<p>surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);<\/p>\n<p>surfaceHolder.addCallback(new SurfaceHolder.Callback() {<\/p>\n<p>    @Override<\/p>\n<p>    public void surfaceCreated(SurfaceHolder holder) {<\/p>\n<p>        try {<\/p>\n<p>            camera.setPreviewDisplay(holder);<\/p>\n<p>            camera.startPreview();<\/p>\n<p>        } catch (IOException e) {<\/p>\n<p>            e.printStackTrace();<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>    @Override<\/p>\n<p>    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {<\/p>\n<p>        \/\/ \u9884\u89c8\u5c3a\u5bf8\u53d1\u751f\u6539\u53d8\u65f6\u7684\u56de\u8c03<\/p>\n<p>    }<\/p>\n<p>    @Override<\/p>\n<p>    public void surfaceDestroyed(SurfaceHolder holder) {<\/p>\n<p>        camera.stopPreview();<\/p>\n<p>        camera.release();<\/p>\n<p>    }<\/p>\n<p>});<\/p>\n<p>\/\/ \u4f7f\u7528TextureView\u9884\u89c8\u548c\u62cd\u7167<\/p>\n<p>TextureView textureView = findViewById(R.id.textureView);<\/p>\n<p>textureView.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {<\/p>\n<p>    @Override<\/p>\n<p>    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {<\/p>\n<p>        try {<\/p>\n<p>            Surface s = new Surface(surface);<\/p>\n<p>            camera.setPreviewDisplay(s);<\/p>\n<p>            camera.startPreview();<\/p>\n<p>        } catch (IOException e) {<\/p>\n<p>            e.printStackTrace();<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>    @Override<\/p>\n<p>    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {<\/p>\n<p>        \/\/ \u9884\u89c8\u5c3a\u5bf8\u53d1\u751f\u6539\u53d8\u65f6\u7684\u56de\u8c03<\/p>\n<p>    }<\/p>\n<p>    @Override<\/p>\n<p>    public boolean onSurfaceTex<a href=\"https:\/\/www.yimenapp.com\/\">APP<\/a>tureDestroyed(SurfaceTexture surface) {<\/p>\n<p>        camera.stopPreview();<\/p>\n<p>        camera.release();<\/p>\n<p>        return true;<\/p>\n<p>    }<\/p>\n<p>    @Override<\/p>\n<p>    public void onSurfaceTextureUpdated(SurfaceTexture surface) {<\/p>\n<p>        \/\/ SurfaceTexture\u66f4\u65b0\u65f6\u7684\u56de\u8c03<\/p>\n<p>    }<\/p>\n<p>});<\/p>\n<p>&#8220;`<\/p>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u5c31\u53ef\u4ee5\u5728app\u4e2d\u8c03\u7528\u76f8\u673a\u53c2\u6570\uff0c\u5e76\u5b9e\u73b0\u62cd\u7167\u3001\u5f55\u50cf\u7b49\u529f\u80fd\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u8fdb\u4e00\u6b65\u8c03\u6574\u76f8\u673a\u53c2\u6570\uff0c\u5e76\u5904\u7406\u76f8\u673a\u7684\u5404\u79cd\u56de\u8c03\u4e8b\u4ef6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728app\u5f00\u53d1\u4e2d\uff0c\u8c03\u7528\u76f8\u673a\u53c2\u6570\u662f\u5b9e\u73b0\u62cd\u7167\u3001\u5f55\u50cf\u7b49\u529f\u80fd\u7684\u5173\u952e\u6b65\u9aa4\u4e4b\u4e00\u3002\u4e0b\u9762\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728app\u4e2d\u8c03\u7528\u76f8\u673a\u53c2\u6570\u7684\u539f\u7406\u548c\u8be6\u7ec6\u6b65\u9aa4\u30021. 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