Android选择图片（从相册或相机）并裁剪

原文地址点击打开链接

根据ta的代码自己写了一个，布局只有一个“选择图片”按钮和ImageView。

效果：

package com.example.mychoosephotos;

import android.support.v7.app.ActionBarActivity;
import android.util.Log;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.sql.Date;
import java.text.SimpleDateFormat;

import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.ContentResolver;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

@SuppressLint("NewApi")
public class MainActivity extends ActionBarActivity {
	
	final int REQUEST_CODE_CAPTURE_CAMEIA = 1;
	final int REQUEST_CODE_PICK_IMAGE = 2;
	final int REQUEST_CODE_ZOOM_PHOTO = 3;
	ImageView img = null;
	// 创建一个以当前时间为名称的文件
    File tempFile = new File(Environment.getExternalStorageDirectory(),getPhotoFileName());
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		img = (ImageView) findViewById(R.id.img);
		Button bn = (Button) findViewById(R.id.bn);
		bn.setOnClickListener(new OnClickListener(){
			@Override
			public void onClick(View v) {

				new AlertDialog.Builder(MainActivity.this)
					.setTitle("图片来源")
					.setPositiveButton("拍照", new DialogInterface.OnClickListener() {
						@Override
						public void onClick(DialogInterface dialog, int which) {
							getImageFromCamera();
						}
				}).setNegativeButton("相册", new DialogInterface.OnClickListener(){
						@Override
						public void onClick(DialogInterface dialog, int which) {
							getImageFromAlbum();
						}
				}).show();
			}
		});
		
		
	}
	
	private void getImageFromCamera() {
		String state = Environment.getExternalStorageState();  
	    if (state.equals(Environment.MEDIA_MOUNTED)) {  
	    	// 调用系统的拍照功能
	        Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");     
	        // 指定调用相机拍照后照片的储存路径
            intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(tempFile));
			startActivityForResult(intent, REQUEST_CODE_CAPTURE_CAMEIA );  
	    }else{  
	    	Toast.makeText(getApplicationContext(), "请确认已经插入SD卡", Toast.LENGTH_LONG).show();  
	    } 
	}
	
	private void getImageFromAlbum() {
		Intent intent = new Intent(Intent.ACTION_PICK, null);
		intent.setDataAndType(
				MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
				"image/*");
	    startActivityForResult(intent, REQUEST_CODE_PICK_IMAGE);
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		
		switch(requestCode){
			case REQUEST_CODE_CAPTURE_CAMEIA :
				photoZoom(Uri.fromFile(tempFile), 370);
				break;
			case REQUEST_CODE_PICK_IMAGE : 
				if (data != null)
	                photoZoom(data.getData(), 370);
				break;
			case REQUEST_CODE_ZOOM_PHOTO : 
				if (data != null){
					Bundle bundle = data.getExtras();
					if(bundle == null){
						Toast.makeText(getApplicationContext(), "err****", Toast.LENGTH_LONG).show();           
		                return;
					}
					else{
						Bitmap photo = bundle.getParcelable("data");
						img.setImageBitmap(photo);//img将图片设置为内容
						//img将图片设置为背景
						//Drawable drawable = new BitmapDrawable(photo);
						//img.setBackgroundDrawable(drawable);
					}
				}
				break;
		}
	}
	
	private void photoZoom(Uri uri, int size){
		Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri, "image/*");
        // crop为true是设置在开启的intent中设置显示的view可以剪裁
        intent.putExtra("crop", "true");

        // aspectX aspectY 是宽高的比例
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);

        // outputX,outputY 是剪裁图片的宽高
        intent.putExtra("outputX", size);
        intent.putExtra("outputY", size);
        intent.putExtra("return-data", true);

        startActivityForResult(intent, REQUEST_CODE_ZOOM_PHOTO);
	}
	
	// 使用系统当前日期加以调整作为照片的名称
    private String getPhotoFileName() {
        Date date = new Date(System.currentTimeMillis());
        SimpleDateFormat dateFormat = new SimpleDateFormat("'IMG'_yyyyMMdd_HHmmss");
        return dateFormat.format(date) + ".jpg";
    }
	
}

代码下载：

http://download.youkuaiyun.com/detail/qq_24833289/9620026