头像上传功能

现在大多数的app都有头像上传功能包含拍照+图库获取+上传服务器的功能，那么下面我就为大家简单的讲解一下这项能把吧！我这里没有进行封装。
先上一下

首先加上权限：
android:name='android.permission.CAMERA'/>
android:name='android.permission.WRITE_EXTERNAL_STORAGE'/>
android:name='android.permission.MOUNT_UNMOUNT_FILESYSTEMS'/>
先看看一下：xml布局
主布局：activity_main

android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal">android:layout_width="wrap_content"android:layout_height="wrap_content"android:padding="10dp"android:text="头像"android:textSize="20dip" />android:layout_width="0dp"android:layout_height="match_parent"android:layout_weight="1">android:id="@+id/ig_inco"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:src="@mipmap/ic_launcher" />

popuwindow的布局：pop_window

android:id="@+id/button1"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_gravity="center"android:text="相库" />android:id="@+id/button2"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_gravity="center"android:text="拍照" />

我这里这是简单的写了一下，你们可以按照自己的需求去设定，一般都会加上popupWindows，我这里也简单的实现了，

在Activity中我们需要设置服务器地址，我这里先给她设置成了sd卡中，让后就直接上代码，哈哈。。。注释很详细自己看吧，亲

SuppressLint("SdCardPath")public class MainActivity extends Activity implements View.OnClickListener {private ImageView ivHead;//头像显示private Button btnTakephoto;//拍照private Button btnPhotos;//相册private Bitmap head;//头像Bitmapprivate static String path = "/sdcard/myHead/";//sd路径private Context mContext = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mContext = this;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.ig_inco);ivHead.setOnClickListener(this);Bitmap bt = BitmapFactory.decodeFile(path + "head.jpg");//从Sd中找头像，转换成Bitmapif (bt != null) {@SuppressWarnings("deprecation")Drawable drawable = new BitmapDrawable(bt);//转换成drawableivHead.setImageDrawable(drawable);} else {}}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.ig_inco:showPopupWindow(v);break;default:break;}}private void showPopupWindow(View v) {// 一个自定义的布局，作为显示的内容View contentView = LayoutInflater.from(mContext).inflate(R.layout.pop_window, null);final PopupWindow popupWindow = new PopupWindow(contentView,ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);// 设置按钮的点击事件Button photos = (Button) contentView.findViewById(R.id.button1);Button tackphoto = (Button) contentView.findViewById(R.id.button2);photos.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Intent intent1 = new Intent(Intent.ACTION_PICK, null);intent1.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "imagesetPicToView(head);//保存在SD卡中ivHead.setImageBitmap(head);//用ImageView显示出来}}break;default:break;}super.onActivityResult(requestCode, resultCode, data);};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();}}}}

如果你还有什么不会的可以给我留言，我们一起探讨呦！^-^