我目前正在处理其他人编写的代码。我可以看到他实现了下面的记录器布局
recorder = new MediaRecorder();
recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
mPreview = new Preview(VideoRecorder.this,recorder);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(mPreview);
我的问题是我想以编程方式将两个Button插入此mPreview进行记录并停止。
我该怎么做？
全班如下
public class VideoRecorder extends Activity {
private SQLiteDatabase db;
public ArrayList<String> videocount = new ArrayList<String>();
public static int x = 1;
public static boolean recod = false;
public static boolean video = true;
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
MenuInflater inflater = getMenuInflater();
inflater.inflate(a.b.R.menu.menus, menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case id.record:
if (video) {
recorder.start();
recod = true;
video = false;
} else {
Toast.makeText(getApplicationContext(),
"Stop Recording First..", 2000).show();
}
break;
case id.stop:
if (recod) {
String outputfilepath = "/sdcard/RdmsVideo" + x + ".3gpp";
recorder.stop();
recorder.release();
recorder = null;
video = true;
this.db = this.openOrCreateDatabase("filestore", MODE_PRIVATE,
null);
this.db.execSQL("CREATE TABLE IF NOT EXISTS videos(urls text)");
db.execSQL("insert into videos values ('" + outputfilepath
+ "')");
db.close();
x++;
// Toast.makeText(getApplicationContext(), outputfilepath,
// 2000).show();
Intent i = new Intent(VideoRecorder.this, sendingpage.class);
startActivity(i);
this.finish();
} else {
Toast.makeText(getApplicationContext(), "Record First", 2000)
.show();
}
// Intent intent = getIntent();
// finish();
// startActivity(intent);
break;
}
return true;
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
homepage ff = new homepage();
if (ff.vid == 1) {
Intent i = new Intent(VideoRecorder.this, homepage.class);
startActivity(i);
this.finish();
} else {
Intent i = new Intent(VideoRecorder.this, tabpage.class);
startActivity(i);
this.finish();
}
break;
default:
break;
}
return super.onKeyDown(keyCode, event);
}
// Create objects of MediaRecorder and Preview class
private MediaRecorder recorder;
private Preview mPreview;
boolean flag = false;
boolean startedRecording = false;
boolean stoppedRecording = false;
// In this method, create an object of MediaRecorder class. Create an object
// of
// RecorderPreview class(Customized View). Add RecorderPreview class object
// as content of UI.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
recorder = new MediaRecorder();
recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
mPreview = new Preview(VideoRecorder.this, recorder);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(mPreview);
final LayoutParams lparams = new LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
final Button record = new Button(VideoRecorder.this); // Activity goes
// here
record.setText("Record");
record.setLayoutParams(lparams);
// record.setOnClickListener(...);
//mPreview.add
}
/*
* ! <p> Initialize the contents of the Activity's standard options menu.
* Menu items are to be placed in to menu. This is called on each press of
* menu button. In this options to start and stop recording are provided.
* Option for start recording has group id 0 and option to stop recording is
* 1. (first parameter of menu.add method). Start and stop have different
* group id, if recording is already started then it shows stop option else
* it shows start option. </p>
*/
/*
* ! <p> This method receives control when Item in menu option is selected.
* It contains implementations to be performed on selection of menu item.
* </p>
*/
class Preview extends SurfaceView implements SurfaceHolder.Callback {
// Create objects for MediaRecorder and SurfaceHolder.
SurfaceHolder mHolder;
MediaRecorder tempRecorder;
// Create constructor of Preview Class. In this, get an object of
// surfaceHolder class by calling getHolder() method. After that add
// callback to the surfaceHolder. The callback will inform when surface
// is
// created/changed/destroyed. Also set surface not to have its own
// buffers.
public Preview(Context context, MediaRecorder recorder) {
super(context);
tempRecorder = recorder;
mHolder = getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
// TODO Auto-generated constructor stub
}
public Surface getSurface() {
return mHolder.getSurface();
}
// Implement the methods of SurfaceHolder.Callback interface
// SurfaceCreated : This method gets called when surface is created.
// In this, initialize all parameters of MediaRecorder object.
// The output file will be stored in SD Card.
public void surfaceCreated(SurfaceHolder holder) {
tempRecorder.setOutputFile("/sdcard/RdmsVideo" + x + ".3gpp");
tempRecorder.setPreviewDisplay(mHolder.getSurface());
try {
tempRecorder.prepare();
} catch (Exception e) {
String message = e.getMessage();
tempRecorder.release();
tempRecorder = null;
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
if (tempRecorder != null) {
tempRecorder.release();
tempRecorder = null;
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int w,
int h) {
}
}
}
答案 0 :(得分：2)
public View onCreateView(View parent, String name, Context context, AttributeSet attrs) {
final LayoutParams lparams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
final Button record = new Button(this); //Activity goes here
record.setText("Record");
record.setLayoutParams(lparams);
record.setOnClickListener(...);
parent.addView(record);
}
答案 1 :(得分：0)
我在这个
中选择了另一个例子案例R.id.btnRecord：
{
AudioLog.logString（“开始录制”）;
（（按钮）findViewById（R.id.btnStart））setVisibility（View.GONE）;
（（按钮）findViewById（R.id.btnStop））setVisibility（View.VISIBLE）;
enableButtons（真）;
的startRecording（）;
中断;
}
案例R.id.btnStop：
{
AudioLog.logString（“停止录制”）;
（（按钮）findViewById（R.id.btnStop））setVisibility（View.GONE）;
((Button)findViewById(R.id.btnStart)).setVisibility(View.VISIBLE);
enableButtons(false);
stopRecording();
break;
}
，xml部分是
<Button
android:id="@+id/btnStop" android:textStyle="bold" android:textColor="#ffffff" android:textSize="17sp"
android:text="Stop" android:background="@drawable/allotherbuttonstop"
android:layout_weight="1.0"/>