模仿支付宝咻一咻

模仿支付宝咻一咻

模仿支付宝咻一咻_第1张图片

这个功能是咻一咻进行,根据音量分贝的大小,来进行抢券(也就是说谁喊得声音大,谁就可以获得)

 

package com.lgl.whew;
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.util.Log;

public class AudioRecordDemo {
	private static final String TAG = "AudioRecord";  
	static final int SAMPLE_RATE_IN_HZ = 8000;  
	static final int BUFFER_SIZE = AudioRecord.getMinBufferSize(SAMPLE_RATE_IN_HZ,  
			AudioFormat.CHANNEL_IN_DEFAULT, AudioFormat.ENCODING_PCM_16BIT);  
	AudioRecord mAudioRecord;  
	boolean isGetVoiceRun;  
	Object mLock;  

	public AudioRecordDemo() {  
		mLock = new Object();  
	}  

	public void getNoiseLevel() {  
		if (isGetVoiceRun) {  
			Log.e(TAG, "还在录着呢");  
			return;  
		}  
		mAudioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC,  
				SAMPLE_RATE_IN_HZ, AudioFormat.CHANNEL_IN_DEFAULT,  
				AudioFormat.ENCODING_PCM_16BIT, BUFFER_SIZE);  
		if (mAudioRecord == null) {  
			Log.e("sound", "mAudioRecord初始化失败");  
		}  
		isGetVoiceRun = true;  

		new Thread(new Runnable() {  
			@Override  
			public void run() {  
				mAudioRecord.startRecording();  
				short[] buffer = new short[BUFFER_SIZE];  
				while (isGetVoiceRun) {  
					//r是实际读取的数据长度,一般而言r会小于buffersize  
					int r = mAudioRecord.read(buffer, 0, BUFFER_SIZE);  
					long v = 0;  
					// 将 buffer 内容取出,进行平方和运算  
					for (int i = 0; i < buffer.length; i++) {  
						v += buffer[i] * buffer[i];  
					}  
					// 平方和除以数据总长度,得到音量大小。  
					double mean = v / (double) r;  
					double volume = 10 * Math.log10(mean);  
					Log.d(TAG, "分贝值:" + volume); 
					if(volume>80){
						Log.d(TAG, "恭喜您获得0.8元优惠券");  
						
					}
				 
					// 大概一秒十次  
					synchronized (mLock) {  
						try {  
							mLock.wait(100);  
						
						} catch (InterruptedException e) {  
							e.printStackTrace();  
						}  
					}  
				}  
				mAudioRecord.stop();  
				mAudioRecord.release();  
				mAudioRecord = null;  
			}  
		}).start();  
	}  
}

 

RoundImage.java

 

 

 

package com.lgl.whew;

/**
 * 圆形头像
 * Created by LGL on 2016/1/12.
 */

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.NinePatchDrawable;
import android.util.AttributeSet;
import android.widget.ImageView;

/**
 * 圆形ImageView,可设置最多两个宽度不同且颜色不同的圆形边框。
 *
 * 设置颜色在xml布局文件中由自定义属性配置参数指定
 */

public class RoundImageView extends ImageView {

	private int mBorderThickness = 0;

	private Context mContext;

	private int defaultColor = 0xFFFFFFFF;

	// 如果只有其中一个有值,则只画一个圆形边框

	private int mBorderOutsideColor = 0;

	private int mBorderInsideColor = 0;

	// 控件默认长、宽

	private int defaultWidth = 0;

	private int defaultHeight = 0;

	public RoundImageView(Context context) {

		super(context);

		mContext = context;

	}

	public RoundImageView(Context context, AttributeSet attrs) {

		super(context, attrs);

		mContext = context;

		setCustomAttributes(attrs);

	}

	public RoundImageView(Context context, AttributeSet attrs, int defStyle) {

		super(context, attrs, defStyle);

		mContext = context;

		setCustomAttributes(attrs);

	}

	private void setCustomAttributes(AttributeSet attrs) {

		TypedArray a = mContext.obtainStyledAttributes(attrs,
				R.styleable.roundedimageview);

		mBorderThickness = a.getDimensionPixelSize(
				R.styleable.roundedimageview_border_thickness, 0);

		mBorderOutsideColor = a
				.getColor(R.styleable.roundedimageview_border_outside_color,
						defaultColor);

		mBorderInsideColor = a.getColor(
				R.styleable.roundedimageview_border_inside_color, defaultColor);

	}

	@Override
	protected void onDraw(Canvas canvas) {

		Drawable drawable = getDrawable();

		if (drawable == null) {

			return;

		}

		if (getWidth() == 0 || getHeight() == 0) {

			return;

		}

		this.measure(0, 0);

		if (drawable.getClass() == NinePatchDrawable.class)

			return;

		Bitmap b = ((BitmapDrawable) drawable).getBitmap();

		Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true);

		if (defaultWidth == 0) {

			defaultWidth = getWidth();

		}

		if (defaultHeight == 0) {

			defaultHeight = getHeight();

		}

		int radius = 0;

		if (mBorderInsideColor != defaultColor
				&& mBorderOutsideColor != defaultColor) {// 定义画两个边框,分别为外圆边框和内圆边框

			radius = (defaultWidth < defaultHeight ? defaultWidth
					: defaultHeight) / 2 - 2 * mBorderThickness;

			// 画内圆

			drawCircleBorder(canvas, radius + mBorderThickness / 2,
					mBorderInsideColor);

			// 画外圆

			drawCircleBorder(canvas, radius + mBorderThickness
					+ mBorderThickness / 2, mBorderOutsideColor);

		} else if (mBorderInsideColor != defaultColor
				&& mBorderOutsideColor == defaultColor) {// 定义画一个边框

			radius = (defaultWidth < defaultHeight ? defaultWidth
					: defaultHeight) / 2 - mBorderThickness;

			drawCircleBorder(canvas, radius + mBorderThickness / 2,
					mBorderInsideColor);

		} else if (mBorderInsideColor == defaultColor
				&& mBorderOutsideColor != defaultColor) {// 定义画一个边框

			radius = (defaultWidth < defaultHeight ? defaultWidth
					: defaultHeight) / 2 - mBorderThickness;

			drawCircleBorder(canvas, radius + mBorderThickness / 2,
					mBorderOutsideColor);

		} else {// 没有边框

			radius = (defaultWidth < defaultHeight ? defaultWidth
					: defaultHeight) / 2;

		}

		Bitmap roundBitmap = getCroppedRoundBitmap(bitmap, radius);

		canvas.drawBitmap(roundBitmap, defaultWidth / 2 - radius, defaultHeight
				/ 2 - radius, null);

	}

	/**
	 * 获取裁剪后的圆形图片
	 */

	public Bitmap getCroppedRoundBitmap(Bitmap bmp, int radius) {

		Bitmap scaledSrcBmp;

		int diameter = radius * 2;

		// 为了防止宽高不相等,造成圆形图片变形,因此截取长方形中处于中间位置最大的正方形图片

		int bmpWidth = bmp.getWidth();

		int bmpHeight = bmp.getHeight();

		int squareWidth = 0, squareHeight = 0;

		int x = 0, y = 0;

		Bitmap squareBitmap;

		if (bmpHeight > bmpWidth) {// 高大于宽

			squareWidth = squareHeight = bmpWidth;

			x = 0;

			y = (bmpHeight - bmpWidth) / 2;

			// 截取正方形图片

			squareBitmap = Bitmap.createBitmap(bmp, x, y, squareWidth,
					squareHeight);

		} else if (bmpHeight < bmpWidth) {// 宽大于高

			squareWidth = squareHeight = bmpHeight;

			x = (bmpWidth - bmpHeight) / 2;

			y = 0;

			squareBitmap = Bitmap.createBitmap(bmp, x, y, squareWidth,
					squareHeight);

		} else {

			squareBitmap = bmp;

		}

		if (squareBitmap.getWidth() != diameter
				|| squareBitmap.getHeight() != diameter) {

			scaledSrcBmp = Bitmap.createScaledBitmap(squareBitmap, diameter,
					diameter, true);

		} else {

			scaledSrcBmp = squareBitmap;

		}

		Bitmap output = Bitmap.createBitmap(scaledSrcBmp.getWidth(),

		scaledSrcBmp.getHeight(),

		Bitmap.Config.ARGB_8888);

		Canvas canvas = new Canvas(output);

		Paint paint = new Paint();

		Rect rect = new Rect(0, 0, scaledSrcBmp.getWidth(),
				scaledSrcBmp.getHeight());

		paint.setAntiAlias(true);

		paint.setFilterBitmap(true);

		paint.setDither(true);

		canvas.drawARGB(0, 0, 0, 0);

		canvas.drawCircle(scaledSrcBmp.getWidth() / 2,

		scaledSrcBmp.getHeight() / 2,

		scaledSrcBmp.getWidth() / 2,

		paint);

		paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));

		canvas.drawBitmap(scaledSrcBmp, rect, rect, paint);

		bmp = null;

		squareBitmap = null;

		scaledSrcBmp = null;

		return output;

	}

	/**
	 * 边缘画圆
	 */

	private void drawCircleBorder(Canvas canvas, int radius, int color) {

		Paint paint = new Paint();

		/* 去锯齿 */

		paint.setAntiAlias(true);

		paint.setFilterBitmap(true);

		paint.setDither(true);

		paint.setColor(color);

		/* 设置paint的 style 为STROKE:空心 */

		paint.setStyle(Paint.Style.STROKE);

		/* 设置paint的外框宽度 */

		paint.setStrokeWidth(mBorderThickness);

		canvas.drawCircle(defaultWidth / 2, defaultHeight / 2, radius, paint);

	}

}

 

 

 

activity_mian.xml

 




    

        

        
    


 

 

 

 

 

 

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