android 拍照和上传的实现代码

import java.io.bytearrayoutputstream;  
import java.io.file;  
import android.app.activity;  
import android.content.intent;  
import android.graphics.bitmap;  
import android.net.uri;  
import android.os.bundle;  
import android.os.environment;  
import android.provider.mediastore;  
import android.view.view;  
import android.view.view.onclicklistener;  
import android.widget.button;  
import android.widget.imageview;  
public class photoactivity extends activity {  
    public static final int none = 0;  
    public static final int photohraph = 1;// 拍照  
    public static final int photozoom = 2; // 缩放  
    public static final int photoresoult = 3;// 结果  
    public static final string image_unspecified = "image/*";  
    imageview imageview = null;  
    button button0 = null;  
    button button1 = null;  
    @override 
    public void oncreate(bundle savedinstancestate) {  
        super.oncreate(savedinstancestate);  
        setcontentview(r.layout.photo);  
        imageview = (imageview) findviewbyid(r.id.imageid);  
        button0 = (button) findviewbyid(r.id.btn_01);  
        button1 = (button) findviewbyid(r.id.btn_02);  
        button0.setonclicklistener(new onclicklistener() {  
            @override 
            public void onclick(view v) {  
                intent intent = new intent(intent.action_pick, null);  
                intent.setdataandtype(  
                        mediastore.images.media.external_content_uri,  
                        image_unspecified);  
                startactivityforresult(intent, photozoom);  
            }  
        });  
        button1.setonclicklistener(new onclicklistener() {  
            @override 
            public void onclick(view v) {  
                intent intent = new intent(mediastore.action_image_capture);  
                intent.putextra(mediastore.extra_output, uri.fromfile(new file(  
                        environment.getexternalstoragedirectory(), "temp.jpg")));  
                startactivityforresult(intent, photohraph);  
            }  
        });  
    }  
    @override 
    protected void onactivityresult(int requestcode, int resultcode, intent data) {  
        if (resultcode == none)  
            return;  
        // 拍照  
        if (requestcode == photohraph) {  
            // 设置文件保存路径这里放在跟目录下  
            file picture = new file(environment.getexternalstoragedirectory()  
                    + "/temp.jpg");  
            startphotozoom(uri.fromfile(picture));  
        }  
        if (data == null)  
            return;  
        // 读取相册缩放图片  
        if (requestcode == photozoom) {  
            startphotozoom(data.getdata());  
        }  
        // 处理结果  
        if (requestcode == photoresoult) {  
            bundle extras = data.getextras();  
            if (extras != null) {  
                bitmap photo = extras.getparcelable("data");  
                bytearrayoutputstream stream = new bytearrayoutputstream();  
                photo.compress(bitmap.compressformat.jpeg, 75, stream);// (0 -  
                                                                        // 100)压缩文件  
                imageview.setimagebitmap(photo);  
            }  
        }  
        super.onactivityresult(requestcode, resultcode, data);  
    }  
    public void startphotozoom(uri uri) {  
        intent intent = new intent("com.android.camera.action.crop");  
        intent.setdataandtype(uri, image_unspecified);  
        intent.putextra("crop", "true");  
        // aspectx aspecty 是宽高的比例  
        intent.putextra("aspectx", 1);  
        intent.putextra("aspecty", 1);  
        // outputx outputy 是裁剪图片宽�?  
        intent.putextra("outputx", 64);  
        intent.putextra("outputy", 64);  
        intent.putextra("return-data", true);  
        startactivityforresult(intent, photoresoult);  
    }  
}