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 10:56:33 浏览: 239
好的,首先你需要在你的项目的build.gradle文件中添加以下依赖:
```
dependencies {
implementation 'com.github.chrisbanes:PhotoView:2.3.0'
implementation 'com.herohan:UVCAndroid:1.0.4'
}
```
接下来,你需要在你的布局文件中添加一个PhotoView和一个SurfaceView,用于显示摄像头的实时画面。示例代码如下:
```
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.github.chrisbanes.photoview.PhotoView
android:id="@+id/photo_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<SurfaceView
android:id="@+id/surface_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
```
最后,在你的Activity或Fragment中,你需要初始化UVCAndroid库并将摄像头的画面渲染到SurfaceView上。示例代码如下:
```
public class MainActivity extends AppCompatActivity implements UVCViewCallback {
private SurfaceView mSurfaceView;
private PhotoView mPhotoView;
private UVCViewManager mUvcViewManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 初始化UVCAndroid库
mUvcViewManager = new UVCViewManager(this);
mUvcViewManager.setUVCViewCallback(this);
mSurfaceView = findViewById(R.id.surface_view);
mPhotoView = findViewById(R.id.photo_view);
// 将SurfaceView设置为UVCViewManager的渲染目标
mUvcViewManager.setView(mSurfaceView);
}
@Override
public void onFrameAvailable() {
// 每当摄像头有新的画面时,将画面渲染到PhotoView上
mPhotoView.post(new Runnable() {
@Override
public void run() {
mPhotoView.setImageBitmap(mSurfaceView.getDrawingCache());
}
});
}
@Override
public void onPreviewStarted() {
// 摄像头预览开始时的回调
}
@Override
public void onPreviewStopped() {
// 摄像头预览停止时的回调
}
}
```
这样,你就可以用com.herohan:UVCAndroid:1.0.4结合PhotoView来显示摄像头的实时画面了。注意,在使用UVCAndroid库时,你需要在AndroidManifest.xml中添加以下权限:
```
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
```
阅读全文