android 修改头像

package com.example.changhead;

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


import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;

@SuppressLint("SdCardPath")
public class MainActivity extends Activity implements OnClickListener {
	private ImageView ivHead;//头像显示
	private Button btnTakephoto;//拍照
	private Button btnPhotos;//相册
	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_main);
		initView();
	}

	private void initView() {
		//初始化控件
		btnPhotos = (Button) findViewById(R.id.btn_photos);
		btnTakephoto = (Button) findViewById(R.id.btn_takephoto);
		btnPhotos.setOnClickListener(this);
		btnTakephoto.setOnClickListener(this);
		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
			 * 
			 */
		}
		
		
	
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.btn_photos://从相册里面取照片
			Intent intent1 = new Intent(Intent.ACTION_PICK, null);
			intent1.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
			startActivityForResult(intent1, 1);
			break;
		case R.id.btn_takephoto://调用相机拍照
			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
			break;
		default:
			break;
		}
	}
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		switch (requestCode) {
		case 1:
			if (resultCode == RESULT_OK) {
				cropPhoto(data.getData());//裁剪图片
			}

			break;
		case 2:
			if (resultCode == RESULT_OK) {
				File temp = new File(Environment.getExternalStorageDirectory()
						  "/head.jpg");
				cropPhoto(Uri.fromFile(temp));//裁剪图片
			}

			break;
		case 3:
			if (data != null) {
				Bundle extras = data.getExtras();
				head = extras.getParcelable("data");
				if(head!=null){
					/**
					 * 上传服务器代码
					 */
					setPicToView(head);//保存在SD卡中
					ivHead.setImageBitmap(head);//用ImageView显示出来
				}
			}
			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("com.android.camera.action.CROP");
		intent.setDataAndType(uri, "image/*");
		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", 150);
		intent.putExtra("outputY", 150);
		intent.putExtra("return-data", true);
		startActivityForResult(intent, 3);
	}
	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();
			}

		}
}
}

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资源文件列表

ChangHead/.classpath , 364
ChangHead/.project , 845
ChangHead/AndroidManifest.xml , 1109
ChangHead/bin/AndroidManifest.xml , 1109
ChangHead/bin/ChangHead.apk , 195596
ChangHead/bin/classes/com/example/changhead/BuildConfig.class , 351
ChangHead/bin/classes/com/example/changhead/MainActivity.class , 5970
ChangHead/bin/classes/com/example/changhead/R$attr.class , 349
ChangHead/bin/classes/com/example/changhead/R$drawable.class , 416
ChangHead/bin/classes/com/example/changhead/R$id.class , 502
ChangHead/bin/classes/com/example/changhead/R$layout.class , 412
ChangHead/bin/classes/com/example/changhead/R$menu.class , 406
ChangHead/bin/classes/com/example/changhead/R$string.class , 479
ChangHead/bin/classes/com/example/changhead/R$style.class , 440
ChangHead/bin/classes/com/example/changhead/R.class , 652
ChangHead/bin/classes.dex , 445540
ChangHead/bin/dexedLibs/android-support-v4-1aa70397b46d748d10bef223bdb8fc58.jar , 149766
ChangHead/bin/res/drawable-hdpi/ic_launcher.png , 5964
ChangHead/bin/res/drawable-mdpi/ic_launcher.png , 3112
ChangHead/bin/res/drawable-xhdpi/ic_launcher.png , 9355
ChangHead/bin/res/drawable-xxhdpi/ic_launcher.png , 17889
ChangHead/bin/resources.ap_ , 40964
ChangHead/gen/com/example/changhead/BuildConfig.java , 163
ChangHead/gen/com/example/changhead/R.java , 2218
ChangHead/ic_launcher-web.png , 51394
ChangHead/libs/android-support-v4.jar , 385685
ChangHead/proguard-project.txt , 781
ChangHead/project.properties , 563
ChangHead/res/drawable-hdpi/ic_launcher.png , 7658
ChangHead/res/drawable-mdpi/ic_launcher.png , 3777
ChangHead/res/drawable-xhdpi/ic_launcher.png , 12516
ChangHead/res/drawable-xxhdpi/ic_launcher.png , 24777
ChangHead/res/layout/activity_main.xml , 1136
ChangHead/res/menu/activity_main.xml , 257
ChangHead/res/values/strings.xml , 222
ChangHead/res/values/styles.xml , 695
ChangHead/res/values-v11/styles.xml , 332
ChangHead/res/values-v14/styles.xml , 389
ChangHead/src/com/example/changhead/MainActivity.java , 4665