android 调用相机拍照 并缩放切割图片
android 下如果做处理图片的软件 可以调用系统的控件 实现缩放切割图片 非常好的效果

    package cn.m15.test;            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 testActivity 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(), "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 是裁剪图片宽高              intent.putExtra("outputX", 64);              intent.putExtra("outputY", 64);              intent.putExtra("return-data", true);              startActivityForResult(intent, PHOTORESOULT);          }      }  

    <?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>