转载：http://blog.csdn.net/xys289187120/article/details/6575830
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 嘿嘿。
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?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;
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?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() {
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???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() {
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???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);
???}
??});
?}
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?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);
?}
}
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<?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>