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   源码介绍

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经测试，从相册选择以及 拍照 裁剪 均可用(测试环境:android 4.4)

package com.zhy.clippic;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Dialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
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.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;

import com.zhy.view.ClipImageLayout;

@SuppressLint("SdCardPath")
public class ShowDialog extends Activity {
	private ClipImageLayout mClipImageLayout;
	View view;
	Dialog dialog;
	Window window;
	private LinearLayout ghtx;
	private ImageView ivHead;// 头像显示
	private Bitmap head;// 头像Bitmap
	private static String path = "/sdcard/myHead/";// sd路径

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_first);
		mClipImageLayout = (ClipImageLayout) findViewById(R.id.id_clipImageLayout);
		initView();
	}

	private void initView() {
		// 初始化控件
		ghtx = (LinearLayout) findViewById(R.id.ghtx);
		ivHead = (ImageView) findViewById(R.id.iv_head);
		Bitmap bt = BitmapFactory.decodeFile(path   "head.jpg");// 从Sd中找头像，转换成Bitmap
		if (bt != null) {
			@SuppressWarnings("deprecation")
			Drawable drawable = new BitmapDrawable(bt);// 转换成drawable
			ivHead.setImageDrawable(drawable);
		} else {
			/**
			 * 如果SD里面没有则需要从服务器取头像，取回来的头像再保存在SD中
			 * 
			 */
		}
		ghtx.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				showDialog();
			}
		});
	}

	// 从相册里面取照片
	public void photoClick(View v) {
		Intent intent1 = new Intent(Intent.ACTION_PICK, null);
		intent1.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
				"image/*");
		startActivityForResult(intent1, 1);
	}

	// 调用相机拍照
	@SuppressLint("InlinedApi")
	public void cemraClick(View v) {
		Intent intent2 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
		intent2.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(
				Environment.getExternalStorageDirectory(), "head.jpg")));
		startActivityForResult(intent2, 2);// 采用ForResult打开
	}

	public void dissmisClick(View v) {
		dialog.dismiss();
	}

	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		switch (requestCode) {
		case 1:
			if (resultCode == RESULT_OK) {
				cropPhoto(data.getData());// 裁剪图片
			}
			dialog.dismiss();
			break;
		case 2:
			if (resultCode == RESULT_OK) {
				File temp = new File(Environment.getExternalStorageDirectory()
						  "/head.jpg");
				cropPhoto(Uri.fromFile(temp));// 裁剪图片
			}
			dialog.dismiss();
			break;
		case 3:
			if (data != null) {

				/**
				 * 上传服务器代码
				 */
				byte[] b = data.getByteArrayExtra("bitmap");
				Bitmap bitmap = BitmapFactory.decodeByteArray(b, 0, b.length);
				if (bitmap != null) {
					ivHead.setImageBitmap(bitmap);// 用ImageView显示出来
				}
				setPicToView(bitmap);// 保存在SD卡中
			}
			dialog.dismiss();
			break;
		default:
			break;

		}
		super.onActivityResult(requestCode, resultCode, data);
	};

	/**
	 * 调用系统的裁剪
	 * 
	 * @param uri
	 */
	public void cropPhoto(Uri uri) {
		Intent intent = new Intent(ShowDialog.this, MainActivity.class);
		intent.setData(uri);
		startActivityForResult(intent, 3);
	}

	// 图片操作
	private void setPicToView(Bitmap mBitmap) {
		String sdStatus = Environment.getExternalStorageState();
		if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用
			return;
		}
		FileOutputStream b = null;
		File file = new File(path);
		file.mkdirs();// 创建文件夹
		String fileName = path   "head.jpg";// 图片名字
		try {
			b = new FileOutputStream(fileName);
			mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件

		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} finally {
			try {
				// 关闭流
				b.flush();
				b.close();
			} catch (IOException e) {
				e.printStackTrace();
			}

		}

	}

	@SuppressLint("NewApi")
	private void showDialog() {
		view = getLayoutInflater().inflate(R.layout.photo_choose_dialog, null);
		dialog = new Dialog(this, R.style.transparentFrameWindowStyle);
		dialog.setContentView(view, new LayoutParams(LayoutParams.FILL_PARENT,
				LayoutParams.WRAP_CONTENT));
		window = dialog.getWindow();
		// 设置显示动画
		window.setWindowAnimations(R.style.main_menu_animstyle);
		WindowManager.LayoutParams wl = window.getAttributes();
		wl.x = 0;
		wl.y = getWindowManager().getDefaultDisplay().getHeight();
		// 以下这两句是为了保证按钮可以水平满屏
		wl.width = ViewGroup.LayoutParams.MATCH_PARENT;
		wl.height = ViewGroup.LayoutParams.WRAP_CONTENT;

		// 设置显示位置
		dialog.onWindowAttributesChanged(wl);
		// 设置点击外围解散
		dialog.setCanceledOnTouchOutside(true);
		dialog.show();
	}

}