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);       }   }