Question

我想启动相机并通过单击Android中的应用程序自动开始录制。我有启动相机的代码，但我不知道如何开始自动捕获视频。请帮忙。启动相机的代码 -

@Override 
protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState); 
   setContentView(R.layout.activity_c1_main);
   Intent intent = new Intent("android.media.action.VIDEO_CAPTURE");
   StartActivityForResult(intent,CAPTURE_VIDEO_ACTIVITY);
}

我发现了view.performclick但不知道如何使用相机

Answer 1

好的，请在代码中进行以下更改。

Button play;

@Override 
protected void onCreate(Bundle savedInstanceState) 
{
   super.onCreate(savedInstanceState); 
   setContentView(R.layout.activity_c1_main);

   play = findViewById ( R.id.btnPlay );         // assuming you have this button in your .xml file.

   play.setOnClickListener ( new OnClickListener()
   {
        @Override
        public void onClick ( View view )
        {
           Intent intent = new Intent("android.media.action.VIDEO_CAPTURE");
           StartActivityForResult(intent,CAPTURE_VIDEO_ACTIVITY);
        }
   });
}

Answer 2

使用MediaRecorder实现此目的。虽然它需要更多的工作，但会给你更多的控制。请点击此链接http://android-er.blogspot.tw/2011/04/start-video-recording-using.html。由于您不需要任何按钮点击进行录制，因此请在启动相机前保持延迟。这样做

myButton.setPressed(true); //you won't click the button
myButton.invalidate();
myButton.postDelayed(new Runnable() {  
    public void run() {      
         myButton.setPressed(false); 
         myButton.invalidate();
         releaseCamera();   //release camera from preview before MediaRecorder starts
        if(!prepareMediaRecorder()){
            Toast.makeText(AndroidVideoCapture.this,"could not prepare MediaRecorder",Toast.LENGTH_LONG).show();
            finish();
        }
        mediaRecorder.start();
    }
},5000); //causes delay of 5 seconds befor recording starts

在android中单击即可开始视频捕获

2 个答案: