实例介绍
【实例简介】android 4.4系统 测试 可以录像，但是点击拍照和VPN报错
【实例截图】
【核心代码】android录像和拍照功能
package org.dlion.mycamera;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.PixelFormat;
import android.graphics.drawable.Drawable;
import android.hardware.Camera;
import android.hardware.Camera.PictureCallback;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MCamera extends Activity {
private Button mVideoStartBtn;
private SurfaceView mSurfaceview;
private MediaRecorder mMediaRecorder;
private SurfaceHolder mSurfaceHolder;
private File mRecVedioPath;
private File mRecAudioFile;
private TextView timer;
private int hour = 0;
private int minute = 0;
private int second = 0;
private boolean bool;
private int parentId;
protected Camera camera;
protected boolean isPreview;
private Drawable iconStart;
private Drawable iconStop;
private boolean isRecording = true; // true表示没有录像，点击开始；false表示正在录像，点击暂停
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/*
* 全屏显示
*/
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().setFormat(PixelFormat.TRANSLUCENT);
setContentView(R.layout.map_video);
iconStart = getResources().getDrawable(
R.drawable.arc_hf_btn_video_start);
iconStop = getResources().getDrawable(R.drawable.arc_hf_btn_video_stop);
parentId = getIntent().getIntExtra("parentId", 0);
timer = (TextView) findViewById(R.id.arc_hf_video_timer);
mVideoStartBtn = (Button) findViewById(R.id.arc_hf_video_start);
mSurfaceview = (SurfaceView) this.findViewById(R.id.arc_hf_video_view);
// 设置计时器不可见
timer.setVisibility(View.GONE);
// 设置缓存路径
mRecVedioPath = new File(Environment.getExternalStorageDirectory()
.getAbsolutePath() "/hfdatabase/video/temp/");
if (!mRecVedioPath.exists()) {
mRecVedioPath.mkdirs();
}
// 绑定预览视图
SurfaceHolder holder = mSurfaceview.getHolder();
holder.addCallback(new Callback() {
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if (camera != null) {
if (isPreview) {
camera.stopPreview();
isPreview = false;
}
camera.release();
camera = null; // 记得释放
}
mSurfaceview = null;
mSurfaceHolder = null;
mMediaRecorder = null;
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
camera = Camera.open();
Camera.Parameters parameters = camera.getParameters();
parameters.setPreviewFrameRate(5); // 每秒5帧
parameters.setPictureFormat(PixelFormat.JPEG);// 设置照片的输出格式
parameters.set("jpeg-quality", 85);// 照片质量
camera.setParameters(parameters);
camera.setPreviewDisplay(holder);
camera.startPreview();
isPreview = true;
} catch (Exception e) {
e.printStackTrace();
}
mSurfaceHolder = holder;
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format,
int width, int height) {
mSurfaceHolder = holder;
}
});
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mVideoStartBtn.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(View v) {
if (isRecording) {
/*
* 点击开始录像
*/
if (isPreview) {
camera.stopPreview();
camera.release();
camera = null;
}
second = 0;
minute = 0;
hour = 0;
bool = true;
if (mMediaRecorder == null)
mMediaRecorder = new MediaRecorder();
else
mMediaRecorder.reset();
mMediaRecorder.setPreviewDisplay(mSurfaceHolder
.getSurface());
mMediaRecorder
.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mMediaRecorder
.setAudioSource(MediaRecorder.AudioSource.MIC);
mMediaRecorder
.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mMediaRecorder
.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mMediaRecorder
.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mMediaRecorder.setVideoSize(320, 240);
mMediaRecorder.setVideoFrameRate(15);
try {
mRecAudioFile = File.createTempFile("Vedio", ".3gp",
mRecVedioPath);
} catch (IOException e) {
e.printStackTrace();
}
mMediaRecorder.setOutputFile(mRecAudioFile
.getAbsolutePath());
try {
mMediaRecorder.prepare();
timer.setVisibility(View.VISIBLE);
handler.postDelayed(task, 1000);
mMediaRecorder.start();
} catch (Exception e) {
e.printStackTrace();
}
showMsg("开始录制");
mVideoStartBtn.setBackgroundDrawable(iconStop);
isRecording = !isRecording;
} else {
/*
* 点击停止
*/
try {
bool = false;
mMediaRecorder.stop();
timer.setText(format(hour) ":" format(minute) ":"
format(second));
mMediaRecorder.release();
mMediaRecorder = null;
videoRename();
} catch (Exception e) {
e.printStackTrace();
}
isRecording = !isRecording;
mVideoStartBtn.setBackgroundDrawable(iconStart);
showMsg("录制完成，已保存");
try {
camera = Camera.open();
Camera.Parameters parameters = camera.getParameters();
parameters.setPreviewFrameRate(5); // 每秒5帧
parameters.setPictureFormat(PixelFormat.JPEG);// 设置照片的输出格式
parameters.set("jpeg-quality", 85);// 照片质量
camera.setParameters(parameters);
camera.setPreviewDisplay(mSurfaceHolder);
camera.startPreview();
isPreview = true;
} catch (Exception e) {
e.printStackTrace();
}
}
}
});
Button btnImgStart = (Button) findViewById(R.id.arc_hf_img_start);
btnImgStart.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (mMediaRecorder != null) {
try {
bool = false;
mMediaRecorder.stop();
timer.setText(format(hour) ":" format(minute) ":"
format(second));
mMediaRecorder.release();
mMediaRecorder = null;
videoRename();
} catch (Exception e) {
e.printStackTrace();
}
isRecording = !isRecording;
mVideoStartBtn.setBackgroundDrawable(iconStart);
showMsg("录制完成，已保存");
try {
camera = Camera.open();
Camera.Parameters parameters = camera.getParameters();
parameters.setPreviewFrameRate(5); // 每秒5帧
parameters.setPictureFormat(PixelFormat.JPEG);// 设置照片的输出格式
parameters.set("jpeg-quality", 85);// 照片质量
camera.setParameters(parameters);
camera.setPreviewDisplay(mSurfaceHolder);
camera.startPreview();
isPreview = true;
} catch (Exception e) {
e.printStackTrace();
}
}
if (camera != null) {
camera.autoFocus(null);
camera.takePicture(null, null, new PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
Bitmap bitmap = BitmapFactory.decodeByteArray(data,
0, data.length);
Matrix matrix = new Matrix();
// 设置缩放
matrix.postScale(5f, 4f);
bitmap = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(),
matrix, true);
String path = Environment
.getExternalStorageDirectory()
.getAbsolutePath()
"/hfdatabase/img/"
String.valueOf(parentId) "/";
String fileName = new SimpleDateFormat(
"yyyyMMddHHmmss").format(new Date())
".jpg";
File out = new File(path);
if (!out.exists()) {
out.mkdirs();
}
out = new File(path, fileName);
try {
FileOutputStream outStream = new FileOutputStream(
out);
bitmap.compress(CompressFormat.JPEG, 100,
outStream);
outStream.close();
camera.startPreview();
} catch (Exception e) {
e.printStackTrace();
}
showMsg("拍照成功");
}
}); // 拍照
}
}
});
}
/*
* 消息提示
*/
private Toast toast;
public void showMsg(String arg) {
if (toast == null) {
toast = Toast.makeText(this, arg, Toast.LENGTH_SHORT);
} else {
toast.cancel();
toast.setText(arg);
}
toast.show();
}
/*
* 生成video文件名字
*/
protected void videoRename() {
String path = Environment.getExternalStorageDirectory()
.getAbsolutePath()
"/hfdatabase/video/"
String.valueOf(parentId) "/";
String fileName = new SimpleDateFormat("yyyyMMddHHmmss")
.format(new Date()) ".3gp";
File out = new File(path);
if (!out.exists()) {
out.mkdirs();
}
out = new File(path, fileName);
if (mRecAudioFile.exists())
mRecAudioFile.renameTo(out);
}
/*
* 定时器设置，实现计时
*/
private Handler handler = new Handler();
private Runnable task = new Runnable() {
public void run() {
if (bool) {
handler.postDelayed(this, 1000);
second ;
if (second >= 60) {
minute ;
second = second % 60;
}
if (minute >= 60) {
hour ;
minute = minute % 60;
}
timer.setText(format(hour) ":" format(minute) ":"
format(second));
}
}
};
/*
* 格式化时间
*/
public String format(int i) {
String s = i "";
if (s.length() == 1) {
s = "0" s;
}
return s;
}
/*
* 覆写返回键监听
*/
@Override
public void onBackPressed() {
if (mMediaRecorder != null) {
mMediaRecorder.stop();
mMediaRecorder.release();
mMediaRecorder = null;
videoRename();
}
finish();
}
@Override
protected void onPause() {
super.onPause();
onBackPressed();
}
}
标签： Android 拍照 dandroid录像和拍照功能
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