最近在做android方面的开发,下面是android自动对焦并拍照的小例子:
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package com.comnvi.camera;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import com.comnvi.camera.share.AccessTokenKeeper;
import com.tencent.mm.sdk.openapi.IWXAPI;
import com.tencent.weibo.oauthv2.OAuthV2;
import com.weibo.sdk.android.Oauth2AccessToken;
import com.weibo.sdk.android.Weibo;
import com.weibo.sdk.android.WeiboAuthListener;
import com.weibo.sdk.android.WeiboDialogError;
import com.weibo.sdk.android.WeiboException;
import com.weibo.sdk.android.api.StatusesAPI;
import com.weibo.sdk.android.net.RequestListener;
import com.weibo.sdk.android.sso.SsoHandler;
import android.app.Activity;
import android.content.Intent;
import android.hardware.Camera;
import android.hardware.Camera.AutoFocusCallback;
import android.hardware.Camera.PictureCallback;
import android.os.Bundle;
import android.os.Environment;
import android.os.Looper;
import android.util.Log;
import android.view.MotionEvent;
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.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity{
private Weibo mWeibo;
SsoHandler mSsoHandler;
public static final String SINA_CONSUMER_KEY = "2022960751" ;
public static final String SINA_REDIRECT_URL = "http://sns.whalecloud.com/sina2/callback" ;
// 按钮面板
private View mPannelController;
// 报像头
private Camera mCamera;
public static Oauth2AccessToken accessToken;
StatusesAPI api;
@Override
public void onCreate(Bundle savedInstanceState) {
super .onCreate(savedInstanceState);
System.out.println( "onCreate" );
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
mPannelController = this .findViewById(R.id.buttonlayout);
// 创建 定时线程 注意不要使用Timer
pool = Executors.newFixedThreadPool( 1 );
// 预览控件
SurfaceView surfaceView = (SurfaceView) this
.findViewById(R.id.surfaceView);
// 设置参数
surfaceView.getHolder().setFixedSize( 176 , 144 );
surfaceView.getHolder().setKeepScreenOn( true );
surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
surfaceView.getHolder().addCallback( new SurfaceCallback());
// 添加事件
final Button start = (Button) findViewById(R.id.takepicture);
start.setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
if (mCamera != null ) {
start.setEnabled( false );
// 拍照前需要对焦 获取清析的图片
mCamera.autoFocus( new AutoFocusCallback() {
// 对焦结束
@Override
public void onAutoFocus( boolean success, Camera camera) {
// 对焦成功
Toast.makeText(MainActivity. this , "对焦成功 !!" ,
Toast.LENGTH_SHORT).show();
mIsRunning = true ;
// 10s 一张
pool.execute(mRunnable);
//mCamera.takePicture(null, null, new MyPictureCallback());
}
});
}
}
});
Button end = (Button) findViewById(R.id.endtake);
end.setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
mIsRunning = false ;
// 取消任务
start.setEnabled( true );
}
});
mWeibo = Weibo.getInstance(SINA_CONSUMER_KEY, SINA_REDIRECT_URL);
accessToken = AccessTokenKeeper.readAccessToken( this );
Button sina = (Button) findViewById(R.id.sina);
sina.setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
mSsoHandler = new SsoHandler(MainActivity. this , mWeibo);
mSsoHandler.authorize( new UserInfoListener());
}
});
}
class UserInfoListener implements WeiboAuthListener{
@Override
public void onCancel() {
Log.v( "sina" , "------onCancel" );
}
@Override
public void onComplete(Bundle arg0) {
String token = arg0.getString( "access_token" );
String expires_in = arg0.getString( "expires_in" );
accessToken = new Oauth2AccessToken(
token, expires_in);
}
@Override
public void onError(WeiboDialogError arg0) {
Log.v( "sina" , "------onError" +arg0.getMessage());
}
@Override
public void onWeiboException(WeiboException arg0) {
Log.v( "sina" , "------onWeiboException" +arg0.getMessage());
}
}
@Override
protected void onActivityResult( int requestCode, int resultCode, Intent data) {
if (mSsoHandler != null ) {
Log.v( "time" , "sso回调" );
mSsoHandler.authorizeCallBack(requestCode, resultCode, data);
}
}
@Override
protected void onDestroy() {
super .onDestroy();
mIsRunning = false ;
if (pool != null ) {
pool.shutdownNow();
}
}
// 定时器
private ExecutorService pool = null ;
private boolean mIsRunning = true ;
// 定时任务
private Runnable mRunnable = new Runnable() {
@Override
public void run() {
// 定时触发拍照方法
while (mIsRunning) {
mCamera.takePicture( null , null , new MyPictureCallback());
try {
Thread.sleep( 100 * 1000 );
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
};
public void share(String path){
if (accessToken.isSessionValid()&&! "" .equals(path)) {
AccessTokenKeeper.keepAccessToken(MainActivity. this , accessToken);
api = new StatusesAPI(accessToken);
Date now= new Date();
SimpleDateFormat temp= new SimpleDateFormat( "MM月dd日 HH:mm" );
String str=temp.format(now);
api.upload(str+ "测试分享" , path, "0" , "0" , new RequestListener() {
@Override
public void onIOException(IOException arg0) {
Log.v( "sina" , "分享失败" +arg0.getMessage());
}
@Override
public void onError(WeiboException arg0) {
Log.v( "sina" , "分享失败" +arg0.getMessage());
}
@Override
public void onComplete(String arg0) {
Log.v( "sina" , "分享成功" +arg0);
}
});
} else {
mSsoHandler = new SsoHandler(MainActivity. this , mWeibo);
mSsoHandler.authorize( new UserInfoListener());
share(path);
}
}
// 照片回调
private final class MyPictureCallback implements PictureCallback {
// 照片生成后
public void onPictureTaken( byte [] data, Camera camera) {
try {
System.out.println( "onPictureTaken" );
File jpgFile = new File(
Environment.getExternalStorageDirectory()+ "/ceshi" );
if (!jpgFile.exists()) {
jpgFile.mkdir();
}
File jpgFile1 = new File(
jpgFile.getAbsoluteFile(),
System.currentTimeMillis() + ".jpg" );
System.out.println(jpgFile1.getAbsolutePath());
Toast.makeText(MainActivity. this ,
"保存成功 !!" + jpgFile1.getAbsolutePath(),
Toast.LENGTH_SHORT).show();
FileOutputStream outStream = new FileOutputStream(jpgFile1);
outStream.write(data);
outStream.close();
share(jpgFile1.getAbsolutePath());
camera.startPreview();
} catch (Exception e) {
e.printStackTrace();
}
}
}
// 预览界面回调
private final class SurfaceCallback implements Callback {
// 预览界面被创建
public void surfaceCreated(SurfaceHolder holder) {
try {
System.out.println( "surfaceCreated" );
mCamera = Camera.open(); // 打开摄像头
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize( 800 , 480 );
parameters.setPreviewFrameRate( 5 );
parameters.setPictureSize( 1024 , 768 );
parameters.setJpegQuality( 80 );
mCamera.setParameters(parameters);
} catch (Exception e) {
e.printStackTrace();
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
System.out.println( "surfaceChanged" );
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mCamera.startPreview(); // 开始预览
}
// 预览界面被销毁
public void surfaceDestroyed(SurfaceHolder holder) {
System.out.println( "surfaceDestroyed" );
if (mCamera != null ) {
mCamera.release();
mCamera = null ;
}
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
mPannelController.setVisibility(ViewGroup.VISIBLE);
return true ;
}
return super .onTouchEvent(event);
}
}
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界面如下图:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/xiaona1047985204/article/details/9369465