Ajo*_*uve 7 java android react-native
我找不到任何程序来通过React native将用户正在做的事情从应用程序中传输出去。
我正在创建自己的插件
目标是将流从Java发送到javascript，然后通过socket.io将其发送到外部套接字服务器
这是我的Java类，要求授权和流
import android.hardware.display.DisplayManager;
import android.util.DisplayMetrics;
import android.app.Activity;
import android.content.Intent;
import android.media.projection.MediaProjectionManager;
import android.media.projection.MediaProjection;
import android.media.MediaRecorder;
import android.util.Log;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import com.facebook.react.bridge.Promise;
import com.facebook.react.bridge.ActivityEventListener;
import com.facebook.react.bridge.BaseActivityEventListener;
import static android.content.Context.MEDIA_PROJECTION_SERVICE;
public class ScreenMirroringModule extends ReactContextBaseJavaModule {
private static final int SCREEN_SHARE_REQUEST = 4242;
private static final String S_MIRROR_CANCELLED = "S_MIRROR_CANCELLED";
private Promise sMirrorPromise;
private MediaProjectionManager mMediaProjectionManager;
private MediaStreamer mMediaStreamer = new MediaStreamer();
private final ActivityEventListener mActivityEventListener = new BaseActivityEventListener() {
@Override
public void onActivityResult(Activity activity, int requestCode, int resultCode, Intent intent) {
if (requestCode == SCREEN_SHARE_REQUEST) {
if (sMirrorPromise != null) {
if (resultCode == Activity.RESULT_CANCELED) {
sMirrorPromise.reject(S_MIRROR_CANCELLED, "Screen mirroring was cancelled");
} else if (resultCode == Activity.RESULT_OK) {
DisplayMetrics dm = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
mMediaStreamer.reset();
mMediaStreamer.setVideoSource(MediaRecorder.VideoSource.SURFACE);
mMediaStreamer.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mMediaStreamer.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
mMediaStreamer.setVideoSize(dm.widthPixels, dm.heightPixels);
mMediaStreamer.setVideoFrameRate(30);
StreamTask st = new StreamTask();
st.execute(mMediaStreamer);
try {
st.get();
} catch (Exception e) {
sMirrorPromise.reject(e);
}
MediaProjection mMediaProjection = mMediaProjectionManager.getMediaProjection(resultCode, intent);
try {
mMediaProjection.createVirtualDisplay("MainActivity",
dm.widthPixels, dm.heightPixels, dm.densityDpi,
DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,
mMediaStreamer.getSurface(), null /*Callbacks*/, null/*Handler*/);
mMediaStreamer.start();
} catch (Exception e) {
//Log.v("ReactNative", Log.getStackTraceString(e));
sMirrorPromise.reject(e);
}
sMirrorPromise.resolve("Test");
}
}
sMirrorPromise = null;
}
}
};
public ScreenMirroringModule(ReactApplicationContext reactContext) {
super(reactContext);
// Add the listener for `onActivityResult`
reactContext.addActivityEventListener(mActivityEventListener);
}
@Override
public String getName() {
return "ScreenMirroring";
}
@ReactMethod
public void stream(String ip, int port, Promise promise) {
final Activity activity = getCurrentActivity();
// Store the promise to resolve/reject when picker returns data
sMirrorPromise = promise;
mMediaProjectionManager = (MediaProjectionManager) activity.getSystemService(MEDIA_PROJECTION_SERVICE);
Intent intent = mMediaProjectionManager.createScreenCaptureIntent();
activity.startActivityForResult(intent, SCREEN_SHARE_REQUEST);
}
}
这是我的班，正在将录音转换成流
package com.ijkoareactapp;
import android.media.MediaRecorder;
import android.net.LocalServerSocket;
import android.net.LocalSocket;
import android.net.LocalSocketAddress;
import android.util.Log;
import java.io.IOException;
import java.io.InputStream;
public class MediaStreamer extends MediaRecorder {
private LocalServerSocket localServerSocket = null;
private LocalSocket receiver, sender = null;
public void prepare() throws IllegalStateException, IOException {
receiver = new LocalSocket();
try {
localServerSocket = new LocalServerSocket("screen_mirror_socket");
receiver.connect(new LocalSocketAddress("screen_mirror_socket"));
receiver.setReceiveBufferSize(4096);
receiver.setSendBufferSize(4096);
sender = localServerSocket.accept();
sender.setReceiveBufferSize(4096);
sender.setSendBufferSize(4096);
} catch (Exception e) {
throw new IOException("Can't create local socket !");
}
setOutputFile(sender.getFileDescriptor());
try {
super.prepare();
} catch (Exception e) {
Log.v("ReactNative", Log.getStackTraceString(e));
closeSockets();
throw e;
}
}
public InputStream getInputStream() {
InputStream out = null;
try {
out = receiver.getInputStream();
} catch (IOException e) {
}
return out;
}
public void stop() {
closeSockets();
super.stop();
}
private void closeSockets() {
if (localServerSocket != null) {
try {
localServerSocket.close();
sender.close();
receiver.close();
} catch (IOException e) {
}
localServerSocket = null;
sender = null;
receiver = null;
}
}
}
这是在后台运行任务的类，因为我无法在主进程中启动本地套接字
package com.ijkoareactapp;
import android.os.AsyncTask;
import android.util.Log;
public class StreamTask extends AsyncTask <MediaStreamer, Integer, Long>{
protected Long doInBackground(MediaStreamer... mediaStreamers) {
Log.v("ReactNative", "Start");
for(int i = 0; i < mediaStreamers.length; i++) {
try {
mediaStreamers[i].prepare();
Log.v("ReactNative", "Prepared");
} catch (Exception e) {
Log.v("ReactNative", "Error");
Log.v("ReactNative", Log.getStackTraceString(e));
}
}
return null;
}
}
我的错误是
08-05 15:28:49.465 555 571 V ReactNative: java.lang.IllegalStateException
08-05 15:28:49.465 555 571 V ReactNative: at android.media.MediaRecorder._prepare(Native Method)
08-05 15:28:49.465 555 571 V ReactNative: at android.media.MediaRecorder.prepare(MediaRecorder.java:827)
08-05 15:28:49.465 555 571 V ReactNative: at com.ijkoareactapp.MediaStreamer.prepare(MediaStreamer.java:37)
08-05 15:28:49.465 555 571 V ReactNative: at com.ijkoareactapp.StreamTask.doInBackground(StreamTask.java:14)
08-05 15:28:49.465 555 571 V ReactNative: at com.ijkoareactapp.StreamTask.doInBackground(StreamTask.java:6)
08-05 15:28:49.465 555 571 V ReactNative: at android.os.AsyncTask$2.call(AsyncTask.java:304)
08-05 15:28:49.465 555 571 V ReactNative: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
08-05 15:28:49.465 555 571 V ReactNative: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
08-05 15:28:49.465 555 571 V ReactNative: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
08-05 15:28:49.465 555 571 V ReactNative: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
08-05 15:28:49.465 555 571 V ReactNative: at java.lang.Thread.run(Thread.java:761)
阅读一些文档似乎在此prepare之前start或之后被调用，setOutputFormat但事实并非如此。
我认为我的内部套接字连接未正确初始化，但找不到正确的方法。
同样不知道我应该把放在哪里mMediaProjection.createVirtualDisplay，目前我有以下错误应该是因为prepare does not works
08-05 15:43:36.077 1575 1575 V ReactNative: java.lang.IllegalStateException: failed to get surface
08-05 15:43:36.077 1575 1575 V ReactNative: at android.media.MediaRecorder.getSurface(Native Method)
08-05 15:43:36.077 1575 1575 V ReactNative: at com.ijkoareactapp.ScreenMirroringModule$1.onActivityResult(ScreenMirroringModule.java:65)
08-05 15:43:36.077 1575 1575 V ReactNative: at com.facebook.react.bridge.ReactContext.onActivityResult(ReactContext.java:262)
08-05 15:43:36.077 1575 1575 V ReactNative: at com.facebook.react.ReactInstanceManager.onActivityResult(ReactInstanceManager.java:703)
08-05 15:43:36.077 1575 1575 V ReactNative: at com.facebook.react.ReactActivityDelegate.onActivityResult(ReactActivityDelegate.java:124)
08-05 15:43:36.077 1575 1575 V ReactNative: at com.facebook.react.ReactActivity.onActivityResult(ReactActivity.java:75)
08-05 15:43:36.077 1575 1575 V ReactNative: at android.app.Activity.dispatchActivityResult(Activity.java:6915)
08-05 15:43:36.077 1575 1575 V ReactNative: at android.app.ActivityThread.deliverResults(ActivityThread.java:4049)
08-05 15:43:36.077 1575 1575 V ReactNative: at android.app.ActivityThread.handleSendResult(ActivityThread.java:4096)
08-05 15:43:36.077 1575 1575 V ReactNative: at android.app.ActivityThread.-wrap20(ActivityThread.java)
08-05 15:43:36.077 1575 1575 V ReactNative: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1516)
08-05 15:43:36.077 1575 1575 V ReactNative: at android.os.Handler.dispatchMessage(Handler.java:102)
08-05 15:43:36.077 1575 1575 V ReactNative: at android.os.Looper.loop(Looper.java:154)
08-05 15:43:36.077 1575 1575 V ReactNative: at android.app.ActivityThread.main(ActivityThread.java:6077)
08-05 15:43:36.077 1575 1575 V ReactNative: at java.lang.reflect.Method.invoke(Native Method)
08-05 15:43:36.077 1575 1575 V ReactNative: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
08-05 15:43:36.077 1575 1575 V ReactNative: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
很难在本地重现您的问题。您的 MediaStreamer 初始化顺序可能是错误的。尝试逐行遵循此顺序：
如果没有帮助，我最好的建议 - 看看正在运行的 React Native/Android 项目并尝试找出差异： https://github.com/ycswaves/react-native-screen-recorder/blob/ master/android/app/src/main/java/com/screenrecorder/MainActivity.java#L131~L143 或此： https: //github.com/fyhertz/spydroid-ipcamera/blob/779f1035ac8fd91be5dfba99516da1b9f29f8768/src/net/majorkernelpanic/流/视频/VideoStream.java#L339~L357
根据此存储库，OutputFormat.MPEG_4 不是套接字的最佳选择。您想尝试 THREE_GPP 吗？
最后一件事，您必须为您的应用程序添加额外的权限：
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
祝你好运！
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