android camera 拍照加图片处理

1、应用主要是调用了startActivityForResult方法来进行拍照，通过设置照片存储的路径，将拍好的照片存储在对应的路径下，并可以查看拍好的照片。

代码下载地址：http://download.csdn.net/detail/u011324501/9498516

2、主要代码：onActivityResult方法

 @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        if (resultCode== Activity.RESULT_OK){            String sdStatus = Environment.getExternalStorageState();//检测sd卡是否可用            if (!sdStatus.equals(Environment.MEDIA_MOUNTED)){                System.out.println("SD现在不能使用！");                return ;            }            String name = new DateFormat().format("yyyyMMdd_hhmmss", Calendar.getInstance(Locale.CHINA)) + ".jpg";            Toast.makeText(this, name, Toast.LENGTH_LONG).show();            Bundle bundle = data.getExtras();            bitmap = (Bitmap) bundle.get("data");// 获取相机返回的数据，并转换为Bitmap图片格式            getRoundedBitmap(bitmap);            FileOutputStream b = null;            File file = new File("/sdcard/data/");//文件保存路径            file.mkdirs();// 创建文件夹            String fileName ="/sdcard/data/"+name;//文件名字            try {                b = new FileOutputStream(fileName);                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件            } catch (Exception e) {                e.printStackTrace();            }finally {                try {//用完关闭                    b.flush();                    b.close();                } catch (Exception e) {                    e.printStackTrace();                }            }        }        if (resultCode==Activity.RESULT_CANCELED){            Toast.makeText(this, "已取消！", Toast.LENGTH_SHORT).show();        }        super.onActivityResult(requestCode, resultCode, data);    }

执行拍照的代码：

takephoto = (Button)findViewById(R.id.photo);        takephoto.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                startActivityForResult(intent, 1);            }        });

3、应用不仅执行了拍照存储查看，还添加了几种照片的处理

全部代码：MainActivity.java

package wind.com.camera;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.ColorMatrix;import android.graphics.ColorMatrixColorFilter;import android.graphics.LinearGradient;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.PorterDuff;import android.graphics.PorterDuffXfermode;import android.graphics.Rect;import android.graphics.RectF;import android.graphics.Shader;import android.graphics.drawable.BitmapDrawable;import android.os.Environment;import android.provider.MediaStore;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.text.format.DateFormat;import android.view.View;import android.widget.Button;import android.widget.ImageView;import android.widget.Toast;import java.io.File;import java.io.FileOutputStream;import java.util.Calendar;import java.util.Locale;public class MainActivity extends AppCompatActivity implements View.OnClickListener {    private Button takephoto;    private Button hui,alpaha,rotate,screw,Reflected;    ImageView image;    Bitmap bitmap;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        initUi();    }    /**     * 初始化UI     */    private void initUi() {        image = (ImageView)findViewById(R.id.image);// 将图片显示在ImageView里        //拍照        takephoto = (Button)findViewById(R.id.photo);        takephoto.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                startActivityForResult(intent, 1);            }        });        hui = (Button)findViewById(R.id.hui);        hui.setOnClickListener(this);        alpaha = (Button)findViewById(R.id.alpaha);        alpaha.setOnClickListener(this);        rotate = (Button)findViewById(R.id.rotate);        rotate.setOnClickListener(this);        screw = (Button)findViewById(R.id.screw);        screw.setOnClickListener(this);        Reflected = (Button)findViewById(R.id.Reflected);        Reflected.setOnClickListener(this);    }    /**     *     * @param v     */    @Override    public void onClick(View v) {        switch (v.getId()){            case R.id.hui: getGrayBitmap(bitmap);                Toast.makeText(this,"变灰",Toast.LENGTH_SHORT).show();                break;            case R.id.alpaha:getAlphaBitmap(bitmap);                Toast.makeText(this,"alpaha",Toast.LENGTH_SHORT).show();                break;            case R.id.rotate:getRotatedBitmap(bitmap);                Toast.makeText(this,"rotate",Toast.LENGTH_SHORT).show();                break;            case R.id.screw:getScrewBitmap(bitmap);                Toast.makeText(this,"screw",Toast.LENGTH_SHORT).show();                break;            case R.id.Reflected: getReflectedBitmap(bitmap);                Toast.makeText(this,"Reflected",Toast.LENGTH_SHORT).show();                break;        }    }    /**     * take photo     * @param requestCode     * @param resultCode     * @param data     */    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        if (resultCode== Activity.RESULT_OK){            String sdStatus = Environment.getExternalStorageState();//检测sd卡是否可用            if (!sdStatus.equals(Environment.MEDIA_MOUNTED)){                System.out.println("SD现在不能使用！");                return ;            }            String name = new DateFormat().format("yyyyMMdd_hhmmss", Calendar.getInstance(Locale.CHINA)) + ".jpg";            Toast.makeText(this, name, Toast.LENGTH_LONG).show();            Bundle bundle = data.getExtras();            bitmap = (Bitmap) bundle.get("data");// 获取相机返回的数据，并转换为Bitmap图片格式            getRoundedBitmap(bitmap);            FileOutputStream b = null;            File file = new File("/sdcard/data/");//文件保存路径            file.mkdirs();// 创建文件夹            String fileName ="/sdcard/data/"+name;//文件名字            try {                b = new FileOutputStream(fileName);                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件            } catch (Exception e) {                e.printStackTrace();            }finally {                try {//用完关闭                    b.flush();                    b.close();                } catch (Exception e) {                    e.printStackTrace();                }            }        }        if (resultCode==Activity.RESULT_CANCELED){            Toast.makeText(this, "已取消！", Toast.LENGTH_SHORT).show();        }        super.onActivityResult(requestCode, resultCode, data);    }    /**     * 图片圆角处理     * @param bitmap     * @return     */    public Bitmap getRoundedBitmap(Bitmap bitmap) {       // Bitmap mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.frame);        Bitmap mBitmap = bitmap;        //创建新的位图        Bitmap bgBitmap = Bitmap.createBitmap(mBitmap.getWidth(), mBitmap.getHeight(), Bitmap.Config.ARGB_8888);        //把创建的位图作为画板        Canvas mCanvas = new Canvas(bgBitmap);        Paint mPaint = new Paint();        Rect mRect = new Rect(0, 0, mBitmap.getWidth(), mBitmap.getHeight());        RectF mRectF = new RectF(mRect);        //设置圆角半径为20        float roundPx = 15;        mPaint.setAntiAlias(true);        //先绘制圆角矩形        mCanvas.drawRoundRect(mRectF, roundPx, roundPx, mPaint);        //设置图像的叠加模式        mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));        //绘制图像        mCanvas.drawBitmap(mBitmap, mRect, mRect, mPaint);        image.setImageBitmap(bgBitmap);        return bgBitmap;    }    /**     *  图片灰化处理     * @param bitmap     * @return     */    public Bitmap getGrayBitmap(Bitmap bitmap) {       // Bitmap mBitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);        Bitmap mBitmap = bitmap;        Bitmap mGrayBitmap = Bitmap.createBitmap(mBitmap.getWidth(), mBitmap.getHeight(), Bitmap.Config.ARGB_8888);        Canvas mCanvas = new Canvas(mGrayBitmap);        Paint mPaint = new Paint();        //创建颜色变换矩阵        ColorMatrix mColorMatrix = new ColorMatrix();        //设置灰度影响范围        mColorMatrix.setSaturation(0);        //创建颜色过滤矩阵        ColorMatrixColorFilter mColorFilter = new ColorMatrixColorFilter(mColorMatrix);        //设置画笔的颜色过滤矩阵        mPaint.setColorFilter(mColorFilter);        //使用处理后的画笔绘制图像        mCanvas.drawBitmap(mBitmap, 0, 0, mPaint);        image.setImageBitmap(mGrayBitmap);        return mGrayBitmap;    }    /**     * 提取图像Alpha位图     * @param bitmap     * @return mAlphaBitmap     */    public Bitmap getAlphaBitmap(Bitmap bitmap) {        BitmapDrawable mBitmapDrawable = (BitmapDrawable) getResources().getDrawable(R.mipmap.ic_launcher);        //Bitmap mBitmap = mBitmapDrawable.getBitmap();        Bitmap mBitmap = bitmap;        //BitmapDrawable的getIntrinsicWidth（）方法，Bitmap的getWidth（）方法        //注意这两个方法的区别        //Bitmap mAlphaBitmap = Bitmap.createBitmap(mBitmapDrawable.getIntrinsicWidth(), mBitmapDrawable.getIntrinsicHeight(), Config.ARGB_8888);        Bitmap mAlphaBitmap = Bitmap.createBitmap(mBitmap.getWidth(), mBitmap.getHeight(), Bitmap.Config.ARGB_8888);        Canvas mCanvas = new Canvas(mAlphaBitmap);        Paint mPaint = new Paint();        mPaint.setColor(Color.BLUE);        //从原位图中提取只包含alpha的位图        Bitmap alphaBitmap = mBitmap.extractAlpha();        //在画布上（mAlphaBitmap）绘制alpha位图        mCanvas.drawBitmap(alphaBitmap, 0, 0, mPaint);        image.setImageBitmap(mAlphaBitmap);        return mAlphaBitmap;    }    /**     * getRotatedBitmap     * @param bitmap     * @return mRotateBitmap     */    public Bitmap getRotatedBitmap(Bitmap bitmap) {        BitmapDrawable mBitmapDrawable = (BitmapDrawable) getResources().getDrawable(R.mipmap.ic_launcher);        //Bitmap mBitmap = mBitmapDrawable.getBitmap();        Bitmap mBitmap =  bitmap;        int width = mBitmap.getWidth();        int height = mBitmap.getHeight();        Matrix matrix = new Matrix();        matrix.preRotate(45);        Bitmap mRotateBitmap = Bitmap.createBitmap(mBitmap, 0, 0, width, height, matrix, true);        image.setImageBitmap(mRotateBitmap);        return mRotateBitmap;    }    /**     * getScrewBitmap     * @param bitmap     * @return mScrewBitmap     */    public Bitmap getScrewBitmap(Bitmap bitmap) {        BitmapDrawable mBitmapDrawable = (BitmapDrawable) getResources().getDrawable(R.mipmap.ic_launcher);        //Bitmap mBitmap = mBitmapDrawable.getBitmap();        Bitmap mBitmap =  bitmap;        int width = mBitmap.getWidth();        int height = mBitmap.getHeight();        Matrix matrix = new Matrix();        matrix.preSkew(1.0f, 0.15f);        Bitmap mScrewBitmap = Bitmap.createBitmap(mBitmap, 0, 0, width, height, matrix, true);        image.setImageBitmap(mScrewBitmap);        return mScrewBitmap;    }    /**     * getReflectedBitmap     * @param bitmap     * @return mReflectedBitmap     */    private Bitmap getReflectedBitmap(Bitmap bitmap) {        BitmapDrawable mBitmapDrawable = (BitmapDrawable) getResources().getDrawable(R.mipmap.ic_launcher);       // Bitmap mBitmap = mBitmapDrawable.getBitmap();        Bitmap mBitmap = bitmap;        int width = mBitmap.getWidth();        int height = mBitmap.getHeight();        Matrix matrix = new Matrix();        // 图片缩放，x轴变为原来的1倍，y轴为-1倍,实现图片的反转        matrix.preScale(1, -1);        //创建反转后的图片Bitmap对象，图片高是原图的一半。        //Bitmap mInverseBitmap = Bitmap.createBitmap(mBitmap, 0, height/2, width, height/2, matrix, false);        //创建标准的Bitmap对象，宽和原图一致，高是原图的1.5倍。        //注意两种createBitmap的不同        //Bitmap mReflectedBitmap = Bitmap.createBitmap(width, height*3/2, Config.ARGB_8888);        Bitmap mInverseBitmap = Bitmap.createBitmap(mBitmap, 0, 0, width, height, matrix, false);        Bitmap mReflectedBitmap = Bitmap.createBitmap(width, height*2, Bitmap.Config.ARGB_8888);        // 把新建的位图作为画板        Canvas mCanvas = new Canvas(mReflectedBitmap);        //绘制图片        mCanvas.drawBitmap(mBitmap, 0, 0, null);        mCanvas.drawBitmap(mInverseBitmap, 0, height, null);        //添加倒影的渐变效果        Paint mPaint = new Paint();        Shader mShader = new LinearGradient(0, height, 0, mReflectedBitmap.getHeight(), 0x70ffffff, 0x00ffffff, Shader.TileMode.MIRROR);        mPaint.setShader(mShader);        //设置叠加模式        mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));        //绘制遮罩效果        mCanvas.drawRect(0, height, width, mReflectedBitmap.getHeight(), mPaint);        image.setImageBitmap(mReflectedBitmap);        return mReflectedBitmap;    }}

布局文件：main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:orientation="vertical"    tools:context="wind.com.camera.MainActivity">    <Button        android:id="@+id/photo"        android:layout_width="fill_parent"        android:text="拍照"        android:layout_height="wrap_content" />    <ImageView        android:id="@+id/image"        android:layout_width="wrap_content"        android:layout_gravity="center_horizontal"        android:layout_height="wrap_content" />    <LinearLayout        android:orientation="horizontal"        android:layout_width="wrap_content"        android:layout_height="wrap_content">        <Button            android:id="@+id/hui"            android:layout_width="wrap_content"            android:text="灰度"            android:layout_height="wrap_content" />        <Button            android:id="@+id/alpaha"            android:layout_width="wrap_content"            android:text="缩放"            android:layout_height="wrap_content" />        <Button            android:id="@+id/rotate"            android:layout_width="wrap_content"            android:text="旋转"            android:layout_height="wrap_content" />    </LinearLayout>    <LinearLayout        android:orientation="horizontal"        android:layout_width="wrap_content"        android:layout_height="wrap_content">        <Button            android:id="@+id/screw"            android:layout_width="wrap_content"            android:text="倾斜"            android:layout_height="wrap_content" />        <Button            android:id="@+id/Reflected"            android:layout_width="wrap_content"            android:text="倒影"            android:layout_height="wrap_content" />    </LinearLayout></LinearLayout>

权限：

<uses-permission android:name="android.permission.CAMERA" />    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

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