我正在开发一个允许Unity应用程序记录屏幕的自定义Unity插件（Android）。我已经看过几个现有的Unity插件，似乎没有任何工作或完全正是我需要的。我能够使用这个漂亮的tutorial构建并加载到Unity中的非常简单的Android插件（.jar）。
要清楚......这是我第一次尝试创建Unity插件。
我的问题是，当我扩展Activity时，我的插件无法正常运行。在调试时，log cat不会进入onCreate（）方法，并且不会抛出Log.d（）消息。有关识别以下源代码是否有效的任何帮助都会很棒。这段代码与我观看的教程完全不同。更多参与。
顺便说一下，我首先在Android Studio中构建了以下代码并在设备上运行以确保代码实际按预期执行。它做了。然后我从初始测试中获取代码，并开始根据视频教程和其他资源开发下面的Unity插件。这是我的Android Java代码，它构建了classes.jar文件而没有构建错误。
package lib.rrpartners.com.unityscreencaptureplugin;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.hardware.display.DisplayManager;
import android.hardware.display.VirtualDisplay;
import android.media.MediaRecorder;
import android.media.projection.MediaProjection;
import android.media.projection.MediaProjectionManager;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.SparseIntArray;
import android.view.Surface;
import java.io.IOException;
public class ScreenCapturePlugin extends Activity {
private static final String TAG = "ScreenCapturePlugin";
private static final int REQUEST_CODE = 1000;
private int mScreenDensity;
private MediaProjectionManager mProjectionManager;
private static final int DISPLAY_WIDTH = 1440;
private static final int DISPLAY_HEIGHT = 2560;
private MediaProjection mMediaProjection;
private VirtualDisplay mVirtualDisplay;
private MediaProjectionCallback mMediaProjectionCallback;
private ToggleButton mToggleButton;
private MediaRecorder mMediaRecorder;
private static final SparseIntArray ORIENTATIONS = new SparseIntArray();
private static final int REQUEST_PERMISSIONS = 10;
static {
ORIENTATIONS.append(Surface.ROTATION_0, 90);
ORIENTATIONS.append(Surface.ROTATION_90, 0);
ORIENTATIONS.append(Surface.ROTATION_180, 270);
ORIENTATIONS.append(Surface.ROTATION_270, 180);
}
public String getText() {
return "Some text here";
}
@Override
public void onCreate(Bundle savedInstanceState) {
Log.d("OverrideActivity", "onCreate called!");
super.onCreate(savedInstanceState);
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
mScreenDensity = metrics.densityDpi;
mMediaRecorder = new MediaRecorder();
mProjectionManager = (MediaProjectionManager) getSystemService
(Context.MEDIA_PROJECTION_SERVICE);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode != REQUEST_CODE) {
Log.e(TAG, "Unknown request code: " + requestCode);
return;
}
if (resultCode != RESULT_OK) {
mToggleButton.setChecked(false);
return;
}
mMediaProjectionCallback = new MediaProjectionCallback();
mMediaProjection = mProjectionManager.getMediaProjection(resultCode, data);
mMediaProjection.registerCallback(mMediaProjectionCallback, null);
mVirtualDisplay = createVirtualDisplay();
mMediaRecorder.start();
}
public void startScreenRecording() {
initRecorder();
startScreenRecording();
if (mMediaProjection == null) {
startActivityForResult(mProjectionManager.createScreenCaptureIntent(), REQUEST_CODE);
return;
}
mVirtualDisplay = createVirtualDisplay();
mMediaRecorder.start();
}
private VirtualDisplay createVirtualDisplay() {
return mMediaProjection.createVirtualDisplay("MainActivity",
DISPLAY_WIDTH, DISPLAY_HEIGHT, mScreenDensity,
DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,
mMediaRecorder.getSurface(), null /*Callbacks*/, null
/*Handler*/);
}
private void initRecorder() {
try {
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mMediaRecorder.setOutputFile(Environment
.getExternalStoragePublicDirectory(Environment
.DIRECTORY_DOWNLOADS) + "/video.mp4");
mMediaRecorder.setVideoSize(DISPLAY_WIDTH, DISPLAY_HEIGHT);
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mMediaRecorder.setVideoEncodingBitRate(3000000);
mMediaRecorder.setVideoFrameRate(30);
int rotation = getWindowManager().getDefaultDisplay().getRotation();
int orientation = ORIENTATIONS.get(rotation + 90);
mMediaRecorder.setOrientationHint(orientation);
mMediaRecorder.prepare();
} catch (IOException e) {
e.printStackTrace();
}
}
private class MediaProjectionCallback extends MediaProjection.Callback {
@Override
public void onStop() {
if (mToggleButton.isChecked()) {
mToggleButton.setChecked(false);
mMediaRecorder.stop();
mMediaRecorder.reset();
Log.v(TAG, "Recording Stopped");
}
mMediaProjection = null;
stopScreenSharing();
}
}
private void stopScreenSharing() {
mMediaRecorder.stop();
mMediaRecorder.reset();
if (mVirtualDisplay == null) {
return;
}
mVirtualDisplay.release();
//mMediaRecorder.release(); //If used: mMediaRecorder object cannot
// be reused again
destroyMediaProjection();
}
@Override
public void onDestroy() {
super.onDestroy();
destroyMediaProjection();
}
private void destroyMediaProjection() {
if (mMediaProjection != null) {
mMediaProjection.unregisterCallback(mMediaProjectionCallback);
mMediaProjection.stop();
mMediaProjection = null;
}
Log.i(TAG, "MediaProjection Stopped");
}
}
这是我的Android清单文件
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="lib.rrpartners.com.unityscreencaptureplugin">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<application android:allowBackup="true" android:label="@string/app_name"
android:supportsRtl="true">
</application>
</manifest>
Unity C＃代码
frameCount = GameObject.Find("FrameCount").GetComponent<Text>();
using (AndroidJavaClass cls_UnityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
{
using (AndroidJavaObject obj_Activity = cls_UnityPlayer.GetStatic<AndroidJavaObject>("currentActivity"))
{
obj_Activity.CallStatic("onCreate");
}
}