我尝试在surfaceview
上制作方形摄像头,surfaceview
已经方形,但是当显示状态栏和标题栏时,摄像头预览会拉伸。
这是我的camera_view_activity
布局:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!--Toolbar-->
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="@dimen/actionbar_height"
android:background="@color/white"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white">
<ImageView
android:id="@+id/btnBack"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:paddingTop="@dimen/view_padding"
android:paddingBottom="@dimen/view_padding"
android:src="@drawable/ic_arrow_back"
android:tint="@color/greyishBrown" />
<com.mycity.qlue.qlueapp.utils.CustomFontTextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="16dp"
android:layout_toRightOf="@id/btnBack"
android:gravity="center_vertical"
android:text="Foto Laporan"
android:textAlignment="center"
android:textColor="@color/greyishBrown"
android:textSize="@dimen/text_title"
app:fontName="@string/font_roboto" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
<!-- Camera Preview -->
<FrameLayout
android:id="@+id/surfaceContainer"
android:layout_width="match_parent"
android:layout_height="match_parent">
<SurfaceView
android:id="@+id/camera_preview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/toolbar" />
</FrameLayout>
<!-- /End Camera Preview -->
<!-- Overlay -->
<!-- Put your Content Here -->
<RelativeLayout
android:id="@+id/overlay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="@color/white">
<LinearLayout
android:id="@+id/lyCameraControl"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center_horizontal"
android:orientation="horizontal">
<ImageView
android:id="@+id/btn_flash"
android:layout_width="21dp"
android:layout_height="39dp"
android:layout_gravity="center_vertical"
android:layout_marginEnd="56dp"
android:src="@drawable/ic_inactive_flash" />
<Button
android:id="@+id/btnCaptureImage"
android:layout_width="108dp"
android:layout_height="108dp"
android:layout_marginBottom="32dp"
android:background="@drawable/ic_camera_button" />
<ImageView
android:id="@+id/btnGallery"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center_vertical"
android:layout_marginStart="56dp"
android:src="@drawable/gallery" />
</LinearLayout>
</RelativeLayout>
<!-- /End Overlay -->
这就是我设置相机的方式:
private void setupCamera() {
try {
camera = Camera.open(Camera.CameraInfo.CAMERA_FACING_BACK);
camera.setDisplayOrientation(90);
Camera.Parameters camParams = camera.getParameters();
// Find a preview size that is at least the size of our IMAGE_SIZE
Camera.Size previewSize = camParams.getSupportedPreviewSizes().get(0);
for (Camera.Size size : camParams.getSupportedPreviewSizes()) {
if (size.width >= IMAGE_SIZE && size.height >= IMAGE_SIZE) {
previewSize = size;
break;
}
}
camParams.setPreviewSize(previewSize.width, previewSize.height);
// Try to find the closest picture size to match the preview size.
Camera.Size pictureSize = camParams.getSupportedPictureSizes().get(0);
for (Camera.Size size : camParams.getSupportedPictureSizes()) {
if (size.width == previewSize.width && size.height == previewSize.height) {
pictureSize = size;
break;
}
}
camParams.setPictureSize(pictureSize.width, pictureSize.height);
if (camParams.getSupportedFocusModes().contains(
Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
camParams.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
}
camera.setParameters(camParams);
camera.setPreviewDisplay(surfaceHolder);
camera.startPreview();
} catch (IOException e) {
e.printStackTrace();
}
}
这是我设置Surfaceview大小的方法
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
// Get the preview size
int previewWidth = cameraPreview.getWidth(),
previewHeight = cameraPreview.getHeight();
// Set the height of the overlay so that it makes the preview a square
RelativeLayout.LayoutParams overlayParams = (RelativeLayout.LayoutParams) overlay.getLayoutParams();
overlayParams.height = (int) ((previewHeight - previewWidth));
overlay.setLayoutParams(overlayParams);
}
就像我的屏幕截图一样,当我拍摄照片时,由于相机预览被拉长,所以在底部裁剪了一些像素。 当我显示状态栏和标题栏时,有什么方法可以使摄像头预览不拉伸?