我在Android手机中实现了代码记录视频。此代码适用于2.2,2.3。
但是当我签入ICS代码时无效？
这里我发布了代码和xml文件。
videorecord.java
import java.io.File;
import java.io.IOException;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.hardware.Camera;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.os.Environment;
import android.util.Log;
import android.view.Display;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
public class videorecord extends Activity{
SharedPreferences.Editor pre;
String filename;
CountDownTimer t;
private Camera myCamera;
private MyCameraSurfaceView myCameraSurfaceView;
private MediaRecorder mediaRecorder;
Integer cnt=0;
LinearLayout myButton;
TextView myButton1;
SurfaceHolder surfaceHolder;
boolean recording;
private TextView txtcount;
private ImageView btnplay;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
recording = false;
setContentView(R.layout.videorecord);
init();
myCamera = getCameraInstance();
if(myCamera == null){
}
myCameraSurfaceView = new MyCameraSurfaceView(this, myCamera);
FrameLayout myCameraPreview = (FrameLayout)findViewById(R.id.videoview);
Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
myCameraSurfaceView.setLayoutParams(new LinearLayout.LayoutParams(width, height-60));
myCameraPreview.addView(myCameraSurfaceView);
myButton = (LinearLayout)findViewById(R.id.mybutton);
btnplay.setOnClickListener(myButtonOnClickListener);
}
private void init() {
txtcount = (TextView) findViewById(R.id.txtcounter);
//myButton1 = (TextView) findViewById(R.id.mybutton1);
btnplay = (ImageView)findViewById(R.id.btnplay);
t = new CountDownTimer( Long.MAX_VALUE , 1000) {
@Override
public void onTick(long millisUntilFinished) {
cnt++;
String time = new Integer(cnt).toString();
long millis = cnt;
int seconds = (int) (millis / 60);
int minutes = seconds / 60;
seconds = seconds % 60;
txtcount.setText(String.format("%d:%02d:%02d", minutes, seconds,millis));
}
@Override
public void onFinish() { }
};
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK))
{
if(recording)
{
new AlertDialog.Builder(videorecord.this).setTitle("Do you want to save Video ?")
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
filename();
//finish();
}
}).setNegativeButton("Cancle", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
}).show();
}
else
{
if ((keyCode == KeyEvent.KEYCODE_BACK))
{
//Intent homeIntent= new Intent(Intent.ACTION_MAIN);
//homeIntent.addCategory(Intent.CATEGORY_HOME);
//homeIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
//startActivity(homeIntent);
//this.finishActivity(1);
finish();
}
//moveTaskToBack(true);
// finish();
return super.onKeyDown(keyCode, event);
}
}
else
{
// Toast.makeText(getApplicationContext(), "asd", Toast.LENGTH_LONG).show();
android.os.Process.killProcess(android.os.Process.myPid()) ;
}
return super.onKeyDown(keyCode, event);
}
ImageView.OnClickListener myButtonOnClickListener
= new ImageView.OnClickListener(){
public void onClick(View v) {
if(recording){
Log.e("Record error", "error in recording .");
mediaRecorder.stop();
t.cancel();
filename();
releaseMediaRecorder();
}else{
releaseCamera();
Log.e("Record Stop error", "error in recording .");
//
if(!prepareMediaRecorder()){
prepareMediaRecorder();
finish();
}
mediaRecorder.start();
recording = true;
// myButton1.setText("STOP Recording");
// btnplay.setImageResource(android.R.drawable.ic_media_pause);
btnplay.setImageResource(R.drawable.stoprec);
t.start();
}
}};
private Camera getCameraInstance(){
Camera c = null;
try {
c = Camera.open();
}
catch (Exception e){
}
return c;
}
private void filename()
{
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("Save Video");
alert.setMessage("Enter File Name");
final EditText input = new EditText(this);
alert.setView(input);
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
if(input.getText().length()>=1)
{
filename = input.getText().toString();
File sdcard = new File(Environment.getExternalStorageDirectory() + "/VideoRecord");
File from = new File(sdcard,"null.mp4");
File to = new File(sdcard,filename+".mp4");
from.renameTo(to);
SharedPreferences sp = videorecord.this.getSharedPreferences("data", MODE_WORLD_WRITEABLE);
pre = sp.edit();
pre.clear();
pre.commit();
pre.putString("lastvideo", filename+".mp4");
pre.commit();
//btnplay.setImageResource(android.R.drawable.ic_media_play);
btnplay.setImageResource(R.drawable.startrec);
// Intent intent = new Intent(videorecord.this,StopVidoWatch_Activity.class);
// startActivity(intent);
Intent myIntent = new Intent(getApplicationContext(), StopVidoWatch_Activity.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(myIntent);
}
else
{
filename();
}
}
});
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
// Intent intent = new Intent(videorecord.this,StopVidoWatch_Activity.class);
// startActivity(intent);
File file = new File(Environment.getExternalStorageDirectory() + "/VideoRecord/null.mp4");
//boolean deleted = file.delete();
file.delete();
finish();
}
});
alert.show();
}
private boolean prepareMediaRecorder(){
myCamera = getCameraInstance();
mediaRecorder = new MediaRecorder();
myCamera.unlock();
mediaRecorder.setCamera(myCamera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
File folder = new File(Environment.getExternalStorageDirectory() + "/VideoRecord");
boolean success = false;
if (!folder.exists()) {
success = folder.mkdir();
}
if (!success) {
} else {
}
mediaRecorder.setOutputFile("/sdcard/VideoRecord/"+filename+".mp4");
mediaRecorder.setMaxDuration(60000);
mediaRecorder.setMaxFileSize(5000000);
Display display = getWindowManager().getDefaultDisplay();
int width = display.getHeight();
int height = display.getWidth();
String s = new String();
s= s.valueOf(width);
String s1 = new String();
s1= s1.valueOf(height);
// Toast.makeText(videorecord.this, "Width : " + s , Toast.LENGTH_LONG).show();
// Toast.makeText(videorecord.this, "Height : " + s1 , Toast.LENGTH_LONG).show();
mediaRecorder.setVideoSize(height, width);
mediaRecorder.setPreviewDisplay(myCameraSurfaceView.getHolder().getSurface());
try {
mediaRecorder.prepare();
} catch (IllegalStateException e) {
releaseMediaRecorder();
return false;
} catch (IOException e) {
releaseMediaRecorder();
return false;
}
return true;
}
@Override
protected void onPause() {
super.onPause();
releaseMediaRecorder();
releaseCamera();
}
private void releaseMediaRecorder()
{
if (mediaRecorder != null) {
mediaRecorder.reset();
mediaRecorder.release();
mediaRecorder = null;
myCamera.lock();
}
}
private void releaseCamera(){
if (myCamera != null){
myCamera.release();
myCamera = null;
}
}
public class MyCameraSurfaceView extends SurfaceView implements SurfaceHolder.Callback{
private SurfaceHolder mHolder;
private Camera mCamera;
public MyCameraSurfaceView(Context context, Camera camera) {
super(context);
mCamera = camera;
mHolder = getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
public void surfaceChanged(SurfaceHolder holder, int format, int weight,
int height) {
if (mHolder.getSurface() == null){
return;
}
try {
mCamera.stopPreview();
} catch (Exception e){
}
try {
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();
} catch (Exception e){
}
}
public void surfaceCreated(SurfaceHolder holder) {
try {
mCamera.setPreviewDisplay(holder);
mCamera.startPreview();
} catch (IOException e) {
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
}
}
}
videorecord.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<FrameLayout android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<FrameLayout
android:id="@+id/videoview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"></FrameLayout>
<LinearLayout
android:id="@+id/mybutton"
android:layout_width="fill_parent"
android:layout_marginBottom="0dip"
android:layout_height="wrap_content" android:orientation="horizontal"
android:layout_weight="0" >
<!--
<TextView
android:text="START Recording"
android:id="@+id/mybutton1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
style="@style/savestyle"
android:layout_weight="1"
android:gravity="left"
>
</TextView>
-->
<ImageView android:layout_height="wrap_content" android:id="@+id/btnplay"
android:padding="5dip"
android:background="#A0000000"
android:textColor="#ffffffff"
android:layout_width="wrap_content" android:src="@drawable/startrec" />
</LinearLayout>
<TextView
android:text="00:00:00"
android:id="@+id/txtcounter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right|bottom"
android:padding="5dip"
android:background="#A0000000"
android:textColor="#ffffffff"
/>
</FrameLayout>
<RelativeLayout android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="@color/bgcolor" >
<LinearLayout android:layout_above="@+id/mybutton"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
</LinearLayout>
</RelativeLayout>
</LinearLayout>
答案 0 :(得分：1)
这可能会对你有所帮助，我最近正在研究它并且工作但是在这里我使用Intent，这里从Camera获取视频并将其写入sdcard文件夹并使用该路径播放此视频play.hop它有助于完整
private final int VIDEO_RESULT = 1;
Button btnOk = (Button) popUpView.findViewById(R.id.btn_take_photo);
btnOk.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// mpopup.dismiss(); //dismissing the popup
mpopup.dismiss();
PackageManager pm = getPackageManager();
if (pm.hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
try{
Intent i = new Intent(android.provider.MediaStore.ACTION_VIDEO_CAPTURE);
//i.putExtra(MediaStore.EXTRA_OUTPUT,MyFileContentProviderVideo.CONTENT_URI);
startActivityForResult(i, VIDEO_RESULT);
}catch(Exception e){
}
} else {
Toast.makeText(getBaseContext(), "Camera is not available",Toast.LENGTH_LONG).show();
}
}
});
public void onActivityResult(int requestCode, int resultCode, Intent data) {
selectedVideos = new ArrayList<String>();
if (resultCode == RESULT_OK && requestCode == VIDEO_RESULT) {
try {
uriVideo = data.getData();
//Toast.makeText(ProfileVideo.this,uriVideo.getPath(), Toast.LENGTH_LONG).show();
selectedImagePath = uriVideo.getPath();
//selectedImages = new ArrayList<String>();
byte[] ba = getCapturedVideoStream(ProfileVideo.this, data);
MyWrite(ba);
//selectedImagePath = Base64.encodeBytes(ba);
selectedVideos.add(selectedImagePath);
}
}
public void MyWrite(byte[] buffer)
{
File sdCard = Environment.getExternalStorageDirectory();
File directory = new File (sdCard.getAbsolutePath() + "/MyFiles");
directory.mkdirs();
//Now create the file in the above directory and write the contents into it
File file = new File(directory, "sample.mp4");
selectedImagePath = file.getAbsolutePath();
FileOutputStream fOut = null;
try {
fOut = new FileOutputStream(file);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
BufferedOutputStream osw = new BufferedOutputStream(fOut);
try {
//osw.write(path);
osw.write(buffer);
//osw.write(buffer, offset, length);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
osw.flush();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
osw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static byte[] getCapturedVideoStream(Context ctx, Intent data)
{
try
{
AssetFileDescriptor videoAsset = ctx.getContentResolver().openAssetFileDescriptor(data.getData(), "r");
FileInputStream fis = videoAsset.createInputStream();
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] buf = new byte[1024];
try
{
for (int readNum; (readNum = fis.read(buf)) != -1;)
bos.write(buf, 0, readNum);
}
catch (IOException e)
{
// CommonFunctions.writeLOG(CacheImagesManager.class.getClass().toString(), e.toString());
}
byte[] bytes = bos.toByteArray();
return bytes;
}
catch (IOException e)
{
//CommonFunctions.writeLOG(CacheImagesManager.class.getClass().toString(), e.toString());
return null;
}
}