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 今天写了一个demo分享给大家。

  

001 package cn.m15.test;
002
003 import java.io.ByteArrayOutputStream;
004 import java.io.File;
005 import android.app.Activity;
006 import android.content.Intent;
007 import android.graphics.Bitmap;
008 import android.net.Uri;
009 import android.os.Bundle;
010 import android.os.Environment;
011 import android.provider.MediaStore;
012 import android.view.View;
013 import android.view.View.OnClickListener;
014 import android.widget.Button;
015 import android.widget.ImageView;
016
017 public class testActivity extends Activity {
018
019     public static final int NONE = 0;
020     public static final int PHOTOHRAPH = 1;// 拍照
021     public static final int PHOTOZOOM = 2; // 缩放
022     public static final int PHOTORESOULT = 3;// 结果
023
024     public static final String IMAGE_UNSPECIFIED = "image/*";
025     ImageView imageView = null;
026     Button button0 = null;
027     Button button1 = null;
028
029     @Override
030     public void onCreate(Bundle savedInstanceState) {
031         super.onCreate(savedInstanceState);
032         setContentView(R.layout.main);
033         imageView = (ImageView) findViewById(R.id.imageID);
034         button0 = (Button) findViewById(R.id.btn_01);
035         button1 = (Button) findViewById(R.id.btn_02);
036
037         button0.setOnClickListener(new OnClickListener() {
038             @Override
039             public void onClick(View v) {
040                 Intent intent = new Intent(Intent.ACTION_PICK, null);
041                 intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);
042                 startActivityForResult(intent, PHOTOZOOM);
043             }
044         });
045
046         button1.setOnClickListener(new OnClickListener() {
047
048             @Override
049             public void onClick(View v) {
050                 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
051                 intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(newFile(Environment.getExternalStorageDirectory(), "temp.jpg")));
052                 startActivityForResult(intent, PHOTOHRAPH);
053             }
054         });
055     }
056
057     @Override
058     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
059         if (resultCode == NONE)
060             return;
061         // 拍照
062         if (requestCode == PHOTOHRAPH) {
063             //设置文件保存路径这里放在跟目录下
064             File picture = new File(Environment.getExternalStorageDirectory() +"/temp.jpg");
065             startPhotoZoom(Uri.fromFile(picture));
066         }
067
068         if (data == null)
069             return;
070
071         // 读取相册缩放图片
072         if (requestCode == PHOTOZOOM) {
073             startPhotoZoom(data.getData());
074         }
075         // 处理结果
076         if (requestCode == PHOTORESOULT) {
077             Bundle extras = data.getExtras();
078             if (extras != null) {
079                 Bitmap photo = extras.getParcelable("data");
080                 ByteArrayOutputStream stream = new ByteArrayOutputStream();
081                 photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0 - 100)压缩文件
082                 imageView.setImageBitmap(photo);
083             }
084
085         }
086
087         super.onActivityResult(requestCode, resultCode, data);
088     }
089
090     public void startPhotoZoom(Uri uri) {
091         Intent intent = new Intent("com.android.camera.action.CROP");
092         intent.setDataAndType(uri, IMAGE_UNSPECIFIED);
093         intent.putExtra("crop", "true");
094         // aspectX aspectY 是宽高的比例
095         intent.putExtra("aspectX", 1);
096         intent.putExtra("aspectY", 1);
097         // outputX outputY 是裁剪图片宽高
098         intent.putExtra("outputX", 64);
099         intent.putExtra("outputY", 64);
100         intent.putExtra("return-data", true);
101         startActivityForResult(intent, PHOTORESOULT);
102     }
103 }

01 <?xml version="1.0" encoding="utf-8"?>
02 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
03     android:orientation="vertical" android:layout_width="fill_parent"
04     android:layout_height="fill_parent">
05     <TextView android:layout_width="fill_parent"
06         android:layout_height="wrap_content" android:text="@string/hello" />
07     <ImageView android:id="@+id/imageID"
08         android:adjustViewBounds="true" android:maxWidth="50dip"
09         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>

文章出处：http://blog.csdn.net/xys289187120/article/details/6575830