【发布时间】：2016-02-14 13:31:03
【问题描述】：
我开发了一个可以录制视频的应用。录制开始时，视频以旋转方向录制。录制时的视频视图向左翻转。我不明白为什么会这样。有人可以帮我解决这个问题。我的编码如下：
MainActivity.java：
import android.app.Activity;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
public class MainActivity extends Activity implements SurfaceHolder.Callback{
Button myButton;
MediaRecorder mediaRecorder;
SurfaceHolder surfaceHolder;
boolean recording;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
recording = false;
mediaRecorder = new MediaRecorder();
initMediaRecorder();
setContentView(R.layout.activity_main);
SurfaceView myVideoView = (SurfaceView)findViewById(R.id.videoview);
surfaceHolder = myVideoView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
myButton = (Button)findViewById(R.id.mybutton);
myButton.setOnClickListener(myButtonOnClickListener);
}
private Button.OnClickListener myButtonOnClickListener
= new Button.OnClickListener(){
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
if(recording){
mediaRecorder.stop();
mediaRecorder.release();
finish();
}else{
mediaRecorder.start();
recording = true;
myButton.setText("STOP");
}
}};
@Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
}
@Override
public void surfaceCreated(SurfaceHolder arg0) {
// TODO Auto-generated method stub
prepareMediaRecorder();
}
@Override
public void surfaceDestroyed(SurfaceHolder arg0) {
// TODO Auto-generated method stub
}
private void initMediaRecorder(){
java.util.Date date= new java.util.Date();
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss")
.format(date.getTime());
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/MyFolder/";
File dir = new File(path);
if(!dir.exists())
dir.mkdirs();
String myfile = new String(path + File.separator +
"VID_"+ timeStamp + ".mp4");
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setOrientationHint(0);
CamcorderProfile camcorderProfile_HQ = CamcorderProfile.get(CamcorderProfile.QUALITY_720P);
mediaRecorder.setProfile(camcorderProfile_HQ);
mediaRecorder.setOutputFile(myfile);
mediaRecorder.setMaxDuration(60000); // Set max duration 60 sec.
mediaRecorder.setMaxFileSize(5000000); // Set max file size 5M
}
private void prepareMediaRecorder(){
mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface());
try {
mediaRecorder.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
activity_main.xml：
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<SurfaceView android:id="@+id/videoview"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</SurfaceView>
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
<Button
android:text="Rec"
android:id="@+id/mybutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|bottom">
</Button>
</FrameLayout>
logcat 没有错误。任何建议/帮助将不胜感激。谢谢。
【问题讨论】：
标签： android android-camera surfaceview video-capture android-mediarecorder