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。

 

 

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);
    }
}

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>