实例介绍
【实例简介】usb camera的连接使用
【实例截图】
【实例截图】
【核心代码】
package com.lgh.test; import android.content.Intent; import android.hardware.usb.UsbDevice; import android.net.Uri; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.TextureView; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ImageView; import android.widget.Spinner; import com.lgh.uvccamera.UVCCameraProxy; import com.lgh.uvccamera.bean.PicturePath; import com.lgh.uvccamera.callback.ConnectCallback; import com.lgh.uvccamera.callback.PhotographCallback; import com.lgh.uvccamera.callback.PictureCallback; import com.lgh.uvccamera.callback.PreviewCallback; import com.serenegiant.usb.Size; import java.util.ArrayList; import java.util.List; public class UVCCameraActivity extends AppCompatActivity { private static final String TAG = "MainActivity"; private TextureView mTextureView; // private SurfaceView mSurfaceView; private ImageView mImageView1; private Spinner mSpinner; private UVCCameraProxy mUVCCamera; private boolean isFirst = true; private String path1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_uvc_camera); initView(); initUVCCamera(); } private void initView() { mTextureView = findViewById(R.id.textureView); // mSurfaceView = findViewById(R.id.surfaceView); // mSurfaceView.setZOrderOnTop(true); mImageView1 = findViewById(R.id.imag1); mSpinner = findViewById(R.id.spinner); mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, final int position, long id) { if (isFirst) { isFirst = false; return; } Log.i(TAG, "position-->" position); mUVCCamera.stopPreview(); List<Size> list = mUVCCamera.getSupportedPreviewSizes(); if (!list.isEmpty()) { mUVCCamera.setPreviewSize(list.get(position).width, list.get(position).height); mUVCCamera.startPreview(); } } @Override public void onNothingSelected(AdapterView<?> parent) { } }); } private void initUVCCamera() { mUVCCamera = new UVCCameraProxy(this); // 已有默认配置,不需要可以不设置 mUVCCamera.getConfig() .isDebug(true) .setPicturePath(PicturePath.APPCACHE) .setDirName("uvccamera") .setProductId(0) .setVendorId(0); mUVCCamera.setPreviewTexture(mTextureView); // mUVCCamera.setPreviewSurface(mSurfaceView); // mUVCCamera.registerReceiver(); mUVCCamera.setConnectCallback(new ConnectCallback() { @Override public void onAttached(UsbDevice usbDevice) { mUVCCamera.requestPermission(usbDevice); } @Override public void onGranted(UsbDevice usbDevice, boolean granted) { if (granted) { mUVCCamera.connectDevice(usbDevice); } } @Override public void onConnected(UsbDevice usbDevice) { mUVCCamera.openCamera(); } @Override public void onCameraOpened() { showAllPreviewSizes(); mUVCCamera.setPreviewSize(640, 480); mUVCCamera.startPreview(); } @Override public void onDetached(UsbDevice usbDevice) { mUVCCamera.closeCamera(); } }); mUVCCamera.setPhotographCallback(new PhotographCallback() { @Override public void onPhotographClick() { mUVCCamera.takePicture(); // mUVCCamera.takePicture("test.jpg"); } }); mUVCCamera.setPreviewCallback(new PreviewCallback() { @Override public void onPreviewFrame(byte[] yuv) { } }); mUVCCamera.setPictureTakenCallback(new PictureCallback() { @Override public void onPictureTaken(String path) { path1 = path; mImageView1.setImageURI(null); mImageView1.setImageURI(Uri.parse(path)); } }); } public void onClick(View v) { switch (v.getId()) { case R.id.btn1: mUVCCamera.startPreview(); break; case R.id.btn2: mUVCCamera.stopPreview(); break; case R.id.btn3: mUVCCamera.clearCache(); break; case R.id.btn4: mUVCCamera.setPreviewRotation(180); break; case R.id.take_picture: // mUVCCamera.takePicture(); mUVCCamera.takePicture("test.jpg"); break; case R.id.imag1: Log.i(TAG, "path1-->" path1); jump2ImageActivity(path1); break; } } @Override protected void onDestroy() { super.onDestroy(); // mUVCCamera.unregisterReceiver(); } private void jump2ImageActivity(String path) { Intent intent = new Intent(this, ImageActivity.class); intent.putExtra("path", path); startActivity(intent); } private void showAllPreviewSizes() { isFirst = true; List<Size> previewList = mUVCCamera.getSupportedPreviewSizes(); List<String> previewStrs = new ArrayList<>(); for (Size size : previewList) { previewStrs.add(size.width " * " size.height); } ArrayAdapter adapter = new ArrayAdapter(UVCCameraActivity.this, android.R.layout.simple_spinner_item, previewStrs); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); mSpinner.setAdapter(adapter); } }
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