Android(安卓)聚焦拍照和震动

package cn.yws.takephotos;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import android.app.Activity;import android.content.pm.ActivityInfo;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.PixelFormat;import android.hardware.Camera;import android.hardware.Camera.PictureCallback;import android.hardware.Camera.ShutterCallback;import android.os.Bundle;import android.os.Environment;import android.os.Vibrator;import android.util.Log;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.Button;import android.widget.Toast;public class MainActivity extends Activity implements SurfaceHolder.Callback{private static String TAG = "MainActivity"; private Camera mCamera;    private Button mButton, mButton1, mButton2;    private SurfaceView mSurfaceView;    private SurfaceHolder holder;    private AutoFocusCallback mAutoFocusCallback = new AutoFocusCallback();    private String path = "MyPhoto";    private String path1;    private Bitmap bmp;    private int cnt = 1;    private Calendar c;    public native String getISBN(Bitmap bmp);    private int flag=5;    //震动器    private Vibrator vibrator;      @Override    protected void onDestroy() {    if(null!=vibrator)    {    vibrator.cancel();    }    super.onDestroy();    }    @Override    public void onCreate(Bundle savedInstanceState) {            super.onCreate(savedInstanceState);            /* 隐藏状态栏 */            this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,                            WindowManager.LayoutParams.FLAG_FULLSCREEN);            /* 隐藏标题栏 */            requestWindowFeature(Window.FEATURE_NO_TITLE);            /* 设定屏幕显示为横向 */            this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);            setContentView(R.layout.main);            /* SurfaceHolder设定 */            mSurfaceView = (SurfaceView) findViewById(R.id.surface_camera);            holder = mSurfaceView.getHolder();            holder.addCallback(MainActivity.this);            holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);            c = Calendar.getInstance();            vibrator=(Vibrator) this.getSystemService(VIBRATOR_SERVICE);            /* Button初始化 */            mButton = (Button) findViewById(R.id.bt_capture);            mButton.setText("对焦拍照");            mButton1 = (Button) findViewById(R.id.bt_save);            mButton1.setText("保存");            mButton2 = (Button) findViewById(R.id.bt_cancel);            mButton2.setText("取消");                                    /* 拍照Button的事件处理 */            mButton.setOnClickListener(new Button.OnClickListener() {                    @Override                    public void onClick(View arg0) {                    Log.i(TAG,"click mButton");                            /* 告动对焦后拍照 */                            mCamera.autoFocus(mAutoFocusCallback);                    }            });            /* Button的事件处理 */            mButton1.setOnClickListener(new Button.OnClickListener() {                    @Override                    public void onClick(View arg0) {                            /* 保存文件 */                    Log.i(TAG,"click button1");                            if (bmp != null) {                                    /* 检查SDCard是否存在 */                                    if (!Environment.MEDIA_MOUNTED.equals(Environment                                                    .getExternalStorageState())) {                                            /* SD卡不存在，显示Toast信息 */                                            Toast.makeText(MainActivity.this,                                                            "SD卡不存在!无法保存相片,请插入SD卡。", Toast.LENGTH_LONG)                                                            .show();                                    } else {                                            try {                                                    /* 文件不存在就创建 */                                                    File f = new File(Environment.getExternalStorageDirectory(), path);                                                    Log.i(TAG,"click button2:" + f.getAbsolutePath());                                                    if (!f.exists()) {                                                            f.mkdir();                                                    }                                                    SimpleDateFormat dateFormat=new SimpleDateFormat("_yyyy_MM_DD_HH_mm_ss");                                                    String date=dateFormat.format(new Date());                                                    /* 保存相片文件 */                                                    path1 ="camera"+date+".jpg";                                                    File n = new File(f, path1);                                                    FileOutputStream bos = new FileOutputStream(n                                                                    .getAbsolutePath());                                                    /* 图片bmp写入文件，文件转换 */                                                    bmp.compress(Bitmap.CompressFormat.JPEG, 100, bos);                                                    /* 调用flush()方法，更新BufferStream */                                                    bos.flush();                                                    /* 结束OutputStream */                                                    bos.close();                                                    Toast.makeText(MainActivity.this,path1 + "保存成功!", Toast.LENGTH_LONG).show();                                                    cnt++;                                                    //震动一下                                                    long[] pattern={800,50,400,30};//// OFF/ON/OFF/ON...                                                      vibrator.vibrate(pattern, 2);//1不重复，非-1为从pattern的指定下标开始重复                                            } catch (Exception e) {                                                    e.printStackTrace();                                            }                                    }                            }                            mButton.setVisibility(View.VISIBLE);                            mButton1.setVisibility(View.VISIBLE);                            mButton2.setVisibility(View.VISIBLE);                            /* 重新设定Camera */                            stopCamera();                            initCamera();                    }            });            /* 放弃Button的事件处理 */            mButton2.setOnClickListener(new Button.OnClickListener() {                    @Override                    public void onClick(View arg0) {                    Log.i(TAG,"click mButton2");                            mButton.setVisibility(View.VISIBLE);                            mButton1.setVisibility(View.VISIBLE);                            mButton2.setVisibility(View.VISIBLE);                            /* 重新设定Camera */                            stopCamera();                            initCamera();                    }            });    }    @Override    public void surfaceCreated(SurfaceHolder surfaceholder) {            try {                    /* 打开相机， */                    mCamera = Camera.open();                    mCamera.setPreviewDisplay(holder);            } catch (IOException exception) {                    mCamera.release();                    mCamera = null;            }    }    @Override    public void surfaceChanged(SurfaceHolder surfaceholder, int format, int w,                    int h) {            /* 相机初始化 */    Log.i(TAG,"init camera");            initCamera();    }    @Override    public void surfaceDestroyed(SurfaceHolder surfaceholder) {    Log.i(TAG,"destoryed camera");            stopCamera();            mCamera.release();            mCamera = null;    }    /* 拍照的method */    private void takePicture() {            if (mCamera != null) {            Log.i(TAG,"takePicture");                  mCamera.takePicture(shutterCallback, rawCallback, jpegCallback);            }    }    private ShutterCallback shutterCallback = new ShutterCallback() {            public void onShutter() {            Log.i(TAG, "onShutter");            }    };    private PictureCallback rawCallback = new PictureCallback() {            public void onPictureTaken(byte[] _data, Camera _camera) {            }    };    private PictureCallback jpegCallback = new PictureCallback() {            public void onPictureTaken(byte[] _data, Camera _camera) {                    /* 取得相仞 */                    try {                            /* 设定Button?视性 */                            mButton.setVisibility(View.GONE);                            mButton1.setVisibility(View.VISIBLE);                            mButton2.setVisibility(View.VISIBLE);                            /* 取得相仞Bitmap对象 */                            bmp = BitmapFactory.decodeByteArray(_data, 0, _data.length);                            //发送给isbn分析                           // String isbn = getISBN(bmp);获得图片解析后的信息                          //  Log.i(TAG, "isbn:" + flag + isbn);                            flag--;                            if(flag>0){                            mCamera.autoFocus(mAutoFocusCallback);                            }                                               } catch (Exception e) {                            e.printStackTrace();                    }            }    };    /* 告定义class AutoFocusCallback */    public final class AutoFocusCallback implements                    android.hardware.Camera.AutoFocusCallback {            public void onAutoFocus(boolean focused, Camera camera) {                    /* 对到焦点拍照 */                    if (focused) {                            takePicture();                    }            }    };    /* 相机初始化的method */    private void initCamera() {            if (mCamera != null) {                    try {                            Camera.Parameters parameters = mCamera.getParameters();                            /*                             * 设定相片大小为1024*768， 格式为JPG                             */                            parameters.setPictureFormat(PixelFormat.JPEG);                            parameters.setPictureSize(1024, 768);                            mCamera.setParameters(parameters);                            /* 开启预览画面 */                            mCamera.startPreview();                    } catch (Exception e) {                            e.printStackTrace();                    }            }    }    /* 停止相机的method */    private void stopCamera() {            if (mCamera != null) {                    try {                            /* 停止预览 */                            mCamera.stopPreview();                    } catch (Exception e) {                            e.printStackTrace();                    }            }    }}

<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    tools:context=".MainActivity" >    <SurfaceView        android:id="@+id/surface_camera"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:layout_weight="1" >    </SurfaceView>    <Button        android:id="@+id/bt_capture"        android:layout_width="64dp"        android:layout_height="wrap_content"        android:layout_x="360px"        android:layout_y="20px"        android:text="拍照" />    <Button        android:id="@+id/bt_save"        android:layout_width="68dp"        android:layout_height="wrap_content"        android:layout_x="234dp"        android:layout_y="110dp"        android:text="取消"        android:textSize="16px" />    <Button        android:id="@+id/bt_cancel"        android:layout_width="66dp"        android:layout_height="wrap_content"        android:layout_x="235dp"        android:layout_y="64dp"        android:text="保存"        android:textSize="16px" /></AbsoluteLayout>

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="cn.yws.takephotos"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="8" />    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>    <uses-permission android:name="android.permission.VIBRATE"/>    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="cn.yws.takephotos.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application>    <uses-permission android:name="android.permission.CAMERA" />    <user-permission android:name="android.permission.INTERNET" />    <uses-feature android:name="android.hardware.camera" />    <uses-feature android:name="android.hardware.camera.autofocus" /></manifest>

更多相关文章

随机推荐