加载相册和拍照图片（Android交流QQ群：213167832）

在现在很多项目都会通过拍照或者选择相册来得到图片资源，所以在网上找到了些资料和大家分享一下。例子很简单，一个activity和一个xml布局文件。
先看看看效果图：

代码搞起

例子结构

SelectPhotoActivity.java

package com.photo;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;/** * 选择照片 * @author Harlan * 2012-4-6 */public class SelectPhotoActivity 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.main);                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(), "ketwangwai_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() + "/ketwangwai_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 是裁剪图片宽高                intent.putExtra("outputX", 64);                intent.putExtra("outputY", 64);                intent.putExtra("return-data", true);                startActivityForResult(intent, PHOTORESOULT);        }}

main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"        android:orientation="vertical" android:layout_width="fill_parent"        android:layout_height="fill_parent">        <TextView android:layout_width="fill_parent"                android:layout_height="wrap_content" android:text="@string/hello" />        <ImageView android:id="@+id/imageID"                android:adjustViewBounds="true" android:maxWidth="50dip"                android:maxHeight="50dip" android:layout_width="wrap_content"                android:layout_height="wrap_content" />        <Button android:id="@+id/btn_01" android:layout_height="50dip"                        android:text="相册" android:layout_width="150dip"/>        <Button android:id="@+id/btn_02" android:layout_height="50dip"                        android:text="拍照" android:layout_width="150dip"/></LinearLayout>

OK完成，有兴趣的朋友可以加QQ群（213167832），一起交流学习，更有源代码共享。

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