Android笔记（14）打开相机和图库并裁剪

1.加权限

<!-- 使用网络权限 -->    <uses-permission android:name="android.permission.INTERNET"/>    <!-- 写sd卡的权限 -->    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>    <!-- 读sd卡权限 -->    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />

2.直接Anctivity

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.widget.Button;  import android.widget.ImageView;  public class MainActivity extends Activity {      private static final int NONE = 0;      private static final int PHOTO_GRAPH = 1;// 拍照      private static final int PHOTO_ZOOM = 2; // 缩放      private static final int PHOTO_RESOULT = 3;// 结果      private static final String IMAGE_UNSPECIFIED = "image/*";      private ImageView imageView = null;      private Button btnPhone = null;      private Button btnTakePicture = null;      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_main);          imageView = (ImageView) findViewById(R.id.imageView);          btnPhone = (Button) findViewById(R.id.btnPhone);          btnPhone.setOnClickListener(onClickListener);          btnTakePicture = (Button) findViewById(R.id.btnTakePicture);          btnTakePicture.setOnClickListener(onClickListener);      }      private final View.OnClickListener onClickListener = new View.OnClickListener() {          @Override          public void onClick(View v) {              if(v==btnPhone){ //从相册获取图片                  Intent intent = new Intent(Intent.ACTION_PICK, null);                  intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);                  startActivityForResult(intent, PHOTO_ZOOM);              }else if(v==btnTakePicture){ //从拍照获取图片                  Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                  intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment                      .getExternalStorageDirectory(),"temp.jpg")));                  startActivityForResult(intent, PHOTO_GRAPH);              }          }      };      @Override      protected void onActivityResult(int requestCode, int resultCode, Intent data) {          if (resultCode == NONE)              return;          // 拍照          if (requestCode == PHOTO_GRAPH) {              // 设置文件保存路径              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 == PHOTO_ZOOM) {              startPhotoZoom(data.getData());          }          // 处理结果          if (requestCode == PHOTO_RESOULT) {              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                  //此处可以把Bitmap保存到sd卡中，具体请看：http://www.cnblogs.com/linjiqin/archive/2011/12/28/2304940.html                  imageView.setImageBitmap(photo); //把图片显示在ImageView控件上              }          }          super.onActivityResult(requestCode, resultCode, data);      }      /**       * 收缩图片       *        * @param uri       */      public void startPhotoZoom(Uri uri) {          Intent intent = new Intent("com.android.camera.action.CROP");//调用Android系统自带的一个图片剪裁页面,          intent.setDataAndType(uri, IMAGE_UNSPECIFIED);          intent.putExtra("crop", "true");//进行修剪          // 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", 300);          intent.putExtra("outputY", 500);          intent.putExtra("return-data", true);          startActivityForResult(intent, PHOTO_RESOULT);      }  }

只打开相机和图库，不裁剪方法
http://blog.csdn.net/beyond0525/article/details/8939984