我正在制作一个带摄像头集成的libgdx应用程序。在挣扎了大约一周后设置相机(按照this指南)后,我陷入了一个功能调用。当我打开应该包含相机的游戏屏幕时,应用程序会变慢并停止应答。 Logcat没有错误日志。这是问题所在:
在AndroidDeviceCamera:
activity.setFixedSize(1600,1200);
在AndroidLauncher:
public void setFixedSize(int width, int height) {
if (graphics.getView() instanceof SurfaceView) {
SurfaceView glView = (SurfaceView) graphics.getView();
glView.getHolder().setFormat(PixelFormat.TRANSLUCENT);
glView.getHolder().setFixedSize(width, height);
}
}
完整代码:
AndroidLauncher:
package com.temp.name;
import com.badlogic.gdx.backends.android.AndroidApplication;
import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration;
import com.temp.name.tools.DeviceCamera;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceView;
public class AndroidLauncher extends AndroidApplication{
@Override
protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
AndroidApplicationConfiguration config = new AndroidApplicationConfiguration();
config.r = 8;
config.g = 8;
config.b = 8;
config.a = 8;
DeviceCamera deviceCamera = new AndroidDeviceCamera(this);
initialize(new TempName(deviceCamera), config);
}
public void post(Runnable r) {
handler.post(r);
}
public void setFixedSize(int width, int height) {
if (graphics.getView() instanceof SurfaceView) {
SurfaceView glView = (SurfaceView) graphics.getView();
glView.getHolder().setFormat(PixelFormat.TRANSLUCENT);
glView.getHolder().setFixedSize(width, height);
}
}
}
对于其他课程,我正在遵循指南,虽然纠正了LibGdx的更新(因为指南是在2013/12/30编写的,现在有些命令如cfg.useGL20已被弃用)。
此外,我将deviceCamera实例从AndroidLauncher传递到主游戏类(TempName),然后从一个屏幕传递到另一个屏幕,直到调用相机的屏幕。顺便说一句,相机以这种方式调用:
//In the screen that should have the camera, inside the render() method
Gdx.gl.glClearColor(0, 0, 0, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
if (deviceCamera != null) {
deviceCamera.prepareCameraAsync(); //deviceCamera here and below is from the interface DeviceCamera
deviceCamera.startPreview();
}
if (Gdx.input.isTouched()) {
if (TempName.mode == Mode.normal) {
TempName.mode = Mode.prepare;
if (deviceCamera != null) {
deviceCamera.prepareCameraAsync();
}
}
} else { // touch removed
if (TempName.mode == Mode.preview) {
TempName.mode = Mode.takePicture;
}
}
if (TempName.mode == Mode.takePicture) {
Gdx.gl20.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
if (deviceCamera != null) {
deviceCamera.takePicture();
}
TempName.mode = Mode.waitForPictureReady;
} else if (TempName.mode == Mode.waitForPictureReady) {
Gdx.gl20.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
} else if (TempName.mode == Mode.prepare) {
Gdx.gl20.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
if (deviceCamera != null) {
if (deviceCamera.isReady()) {
deviceCamera.startPreviewAsync();
TempName.mode = Mode.preview;
}
}
} else if (TempName.mode == Mode.preview) {
Gdx.gl20.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
} else { // TempName.mode = normal
Gdx.gl20.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
}
TempName类中的枚举:
public enum Mode {
normal,
prepare,
preview,
takePicture,
waitForPictureReady,
}
核心项目的DeviceCamera接口:
package com.temp.name.tools;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.graphics.Pixmap;
public interface DeviceCamera {
void prepareCamera();
void startPreview();
void stopPreview();
void takePicture();
byte[] getPictureData();
void startPreviewAsync();
void stopPreviewAsync();
byte[] takePictureAsync(long timeout);
void saveAsJpeg(FileHandle jpgfile, Pixmap cameraPixmap);
boolean isReady();
void prepareCameraAsync();
}
那么,是什么原因造成减速以及如何解决? 当我刚开始使用Libgdx时,我为愚蠢的错误道歉。此外,任何帮助将不胜感激。
答案 0 :(得分:0)
这可能是一个很长的镜头,但我在非游戏应用程序中使用它来从相机获取图片。
首先,确保您有权使用相机。注意:您不能只在清单文件中指定权限,您必须使用对话框专门请求权限。 (如果您需要此代码,请告诉我。)
像这样启动相机意图:
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_SCREEN_ORIENTATION, ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
startActivityForResult(cameraIntent, Constants.CAMERA_REQUEST);
然后,您要覆盖onActivityResult()
方法以获取请求。当用户完成拍照时,将调用此方法。
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == Constants.CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
}
}
我不确定你的游戏是如何布局的,因为这些方法必须从Activity
的上下文运行,所以你可能已经将相机请求传递给了更高级别的课程,然后将结果传回给任何一个班级需要它。