用com.herohan:UVCAndroid:1.0.4结合PhotoView写显示摄像头实时画面的一个例子
时间: 2024-02-24 21:55:37 浏览: 212
好的,这里是一个使用com.herohan:UVCAndroid:1.0.4结合PhotoView显示摄像头实时画面的例子:
1. 首先,在你的项目中添加以下依赖项:
```groovy
dependencies {
implementation 'com.github.chuangdunjiu:UVCAndroid:1.0.4'
implementation 'com.github.chrisbanes:PhotoView:2.3.0'
}
```
2. 在你的布局文件中添加一个PhotoView:
```xml
<com.github.chrisbanes.photoview.PhotoView
android:id="@+id/photo_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
```
3. 在你的Activity或Fragment中获取PhotoView的实例,并使用UVCAndroid库来显示摄像头实时画面:
```java
import android.hardware.usb.UsbDevice;
import android.os.Bundle;
import android.util.Log;
import androidx.appcompat.app.AppCompatActivity;
import com.github.chrisbanes.photoview.PhotoView;
import com.herohan.uvc.UvcDevice;
import com.herohan.uvc.UvcDeviceCallback;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
// 这里的VID和PID是你的摄像头的厂商ID和产品ID
private static final int VID = 0x1234;
private static final int PID = 0x5678;
private UvcDevice mUvcDevice;
private PhotoView mPhotoView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mPhotoView = findViewById(R.id.photo_view);
// 找到指定VID和PID的摄像头设备
UsbDevice usbDevice = UvcDevice.findDevice(this, VID, PID);
if (usbDevice == null) {
Log.e(TAG, "Camera device not found");
return;
}
// 创建UvcDevice对象,并连接到摄像头设备
mUvcDevice = new UvcDevice(this, usbDevice);
mUvcDevice.setCallback(new UvcDeviceCallback() {
@Override
public void onFrame(byte[] data, int width, int height) {
// 在PhotoView中显示摄像头实时画面
mPhotoView.setImageBitmap(BitmapFactory.decodeByteArray(data, 0, data.length));
}
});
mUvcDevice.open();
}
@Override
protected void onDestroy() {
super.onDestroy();
// 断开UvcDevice的连接
if (mUvcDevice != null) {
mUvcDevice.close();
}
}
}
```
这样就可以在PhotoView中显示摄像头实时画面了。注意,这个例子假设你已经授予了相机权限。如果你还没有授予权限,需要在运行时动态请求相机权限。
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