Android使用相机照相以及对照片的裁剪

1.Activity源代码：

package com.example.crema;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;

import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

public class CramaActivity extends Activity {

    private Button creama=null;

    private ImageView img=null;

    private TextView text=null;

    private File tempFile = new File(Environment.getExternalStorageDirectory(),
            getPhotoFileName());

    private static final int PHOTO_REQUEST_TAKEPHOTO = 1;// 拍照
    private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择
    private static final int PHOTO_REQUEST_CUT = 3;// 结果

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_crama);
        init();
        Log.i("TAG-->", ""+Environment.getExternalStorageDirectory());
    }

    private void init() {
        // TODO Auto-generated method stub

    creama=(Button) findViewById(R.id.btn_creama);

    img=(ImageView) findViewById(R.id.img_creama);

    creama.setOnClickListener(listener);
    text=(TextView) findViewById(R.id.text);



    }
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch (requestCode) {
        case PHOTO_REQUEST_TAKEPHOTO:// 当选择拍照时调用
            startPhotoZoom(Uri.fromFile(tempFile));
            break;
        case PHOTO_REQUEST_GALLERY:// 当选择从本地获取图片时
            // 做非空判断，当我们觉得不满意想重新剪裁的时候便不会报异常，下同
            if (data != null)
                startPhotoZoom(data.getData());
            break;
        case PHOTO_REQUEST_CUT:// 返回的结果
            if (data != null)
                // setPicToView(data);
                sentPicToNext(data);
            break;
        }
        super.onActivityResult(requestCode, resultCode, data);
    }
    private OnClickListener listener=new OnClickListener(){

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub

            Intent cameraintent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            // 指定调用相机拍照后照片的储存路径
            cameraintent.putExtra(MediaStore.EXTRA_OUTPUT,
                    Uri.fromFile(tempFile));
            startActivityForResult(cameraintent, PHOTO_REQUEST_TAKEPHOTO);

        }};

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_crama, menu);
        return true;
    }



    private void startPhotoZoom(Uri uri) {
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri, "image/*");
        // crop为true是设置在开启的intent中设置显示的view可以剪裁
        intent.putExtra("crop", "true");

        // aspectX aspectY 是宽高的比例
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);

        // outputX,outputY 是剪裁图片的宽高
        intent.putExtra("outputX", 300);
        intent.putExtra("outputY", 300);
        intent.putExtra("return-data", true);
        intent.putExtra("noFaceDetection", true);
        startActivityForResult(intent, PHOTO_REQUEST_CUT);
    }

    // 将进行剪裁后的图片传递到下一个界面上
    private void sentPicToNext(Intent picdata) {
        Bundle bundle = picdata.getExtras();
        if (bundle != null) {
            Bitmap photo = bundle.getParcelable("data");
            if (photo==null) {
                img.setImageResource(R.drawable.get_user_photo);
            }else {

补充：移动开发 , Android ,