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

 

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>

 

 

 

 

 

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