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 

Java代码  

1. package cn.m15.test;    
2.     
3. import java.io.ByteArrayOutputStream;    
4. import java.io.File;    
5. import android.app.Activity;    
6. import android.content.Intent;    
7. import android.graphics.Bitmap;    
8. import android.net.Uri;    
9. import android.os.Bundle;    
10. import android.os.Environment;    
11. import android.provider.MediaStore;    
12. import android.view.View;    
13. import android.view.View.OnClickListener;    
14. import android.widget.Button;    
15. import android.widget.ImageView;    
16.     
17. public class testActivity extends Activity {    
18.     
19.     public static final int NONE = 0;    
20.     public static final int PHOTOHRAPH = 1;// 拍照    
21.     public static final int PHOTOZOOM = 2; // 缩放    
22.     public static final int PHOTORESOULT = 3;// 结果    
23.     
24.     public static final String IMAGE_UNSPECIFIED = "image/*";    
25.     ImageView imageView = null;    
26.     Button button0 = null;    
27.     Button button1 = null;    
28.     
29.     @Override    
30.     public void onCreate(Bundle savedInstanceState) {    
31.         super.onCreate(savedInstanceState);    
32.         setContentView(R.layout.main);    
33.         imageView = (ImageView) findViewById(R.id.imageID);    
34.         button0 = (Button) findViewById(R.id.btn_01);    
35.         button1 = (Button) findViewById(R.id.btn_02);    
36.     
37.         button0.setOnClickListener(new OnClickListener() {    
38.             @Override    
39.             public void onClick(View v) {    
40.                 Intent intent = new Intent(Intent.ACTION_PICK, null);    
41.                 intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);    
42.                 startActivityForResult(intent, PHOTOZOOM);    
43.             }    
44.         });    
45.     
46.         button1.setOnClickListener(new OnClickListener() {    
47.     
48.             @Override    
49.             public void onClick(View v) {    
50.                 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);    
51.                 intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "temp.jpg")));    
52.                 startActivityForResult(intent, PHOTOHRAPH);    
53.             }    
54.         });    
55.     }    
56.     
57.     @Override    
58.     protected void onActivityResult(int requestCode, int resultCode, Intent data) {    
59.         if (resultCode == NONE)    
60.             return;    
61.         // 拍照    
62.         if (requestCode == PHOTOHRAPH) {    
63.             //设置文件保存路径这里放在跟目录下    
64.             File picture = new File(Environment.getExternalStorageDirectory() + "/temp.jpg");    
65.             startPhotoZoom(Uri.fromFile(picture));    
66.         }    
67.             
68.         if (data == null)    
69.             return;    
70.             
71.         // 读取相册缩放图片    
72.         if (requestCode == PHOTOZOOM) {    
73.             startPhotoZoom(data.getData());    
74.         }    
75.         // 处理结果    
76.         if (requestCode == PHOTORESOULT) {    
77.             Bundle extras = data.getExtras();    
78.             if (extras != null) {    
79.                 Bitmap photo = extras.getParcelable("data");    
80.                 ByteArrayOutputStream stream = new ByteArrayOutputStream();    
81.                 photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0 - 100)压缩文件    
82.                 imageView.setImageBitmap(photo);    
83.             }    
84.     
85.         }    
86.     
87.         super.onActivityResult(requestCode, resultCode, data);    
88.     }    
89.     
90.     public void startPhotoZoom(Uri uri) {    
91.         Intent intent = new Intent("com.android.camera.action.CROP");    
92.         intent.setDataAndType(uri, IMAGE_UNSPECIFIED);    
93.         intent.putExtra("crop", "true");    
94.         // aspectX aspectY 是宽高的比例    
95.         intent.putExtra("aspectX", 1);    
96.         intent.putExtra("aspectY", 1);    
97.         // outputX outputY 是裁剪图片宽高    
98.         intent.putExtra("outputX", 64);    
99.         intent.putExtra("outputY", 64);    
100.         intent.putExtra("return-data", true);    
101.         startActivityForResult(intent, PHOTORESOULT);    
102.     }    
103. }    

Java代码  

1. <?xml version="1.0" encoding="utf-8"?>    
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    
3.     android:orientation="vertical" android:layout_width="fill_parent"    
4.     android:layout_height="fill_parent">    
5.     <TextView android:layout_width="fill_parent"    
6.         android:layout_height="wrap_content" android:text="@string/hello" />    
7.     <ImageView android:id="@+id/imageID"    
8.         android:adjustViewBounds="true" android:maxWidth="50dip"    
9.         android:maxHeight="50dip" android:layout_width="wrap_content"    
10.         android:layout_height="wrap_content" />    
11.     <Button android:id="@+id/btn_01" android:layout_height="50dip"    
12.             android:text="相册" android:layout_width="150dip"/>    
13.     <Button android:id="@+id/btn_02" android:layout_height="50dip"    
14.             android:text="拍照" android:layout_width="150dip"/>    
15. </LinearLayout>