Android 头像上传

首先，大家要了解头像上传需要怎么做。第一。我们要选择图片或者从照相机照一张。第二，需要对头像图片进行处理，第三就是要把头像显示到ImageButton上了。

1.布局文件

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity" >

        android:id="@+id/iv_head"

        android:layout_width="120dp"

        android:layout_height="120dp"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="10dp"

        android:background="@null"

        android:scaleType="fitXY"

        android:src="@drawable/ic_launcher_background" />

2.MainActivity

public class MainActivityextends AppCompatActivityimplements View.OnClickListener {

private ImageButtonivHead;

private Buttonbtn_picture,btn_photo,btn_cancle;

private Bitmaphead;// 头像Bitmap

    @SuppressLint("SdCardPath")

private static Stringpath ="/sdcard/myHead/";// sd路径

    protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

ivHead = (ImageButton) findViewById(R.id.iv_head);

ivHead.setOnClickListener(this);

requestWindowFeature(Window.FEATURE_NO_TITLE);

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(toRoundBitmap(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

*

*/

        }

}

public void onClick(View v) {

showDialog();

}

private void showDialog() {

View view = getLayoutInflater().inflate(R.layout.photo_choose_dialog,null);

final Dialog dialog =new Dialog(this, R.style.transparentFrameWindowStyle);

dialog.setContentView(view,new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));

Window 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();

btn_picture = (Button) window.findViewById(R.id.btn_picture);

btn_photo = (Button) window.findViewById(R.id.btn_photo);

btn_cancle = (Button) window.findViewById(R.id.btn_cancle);

btn_picture.setOnClickListener(new View.OnClickListener() {

@Override

            public void onClick(View v) {

Intent intent1 =new Intent(Intent.ACTION_PICK,null);

intent1.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");

startActivityForResult(intent1,1);

dialog.dismiss();

}

});

btn_photo.setOnClickListener(new View.OnClickListener() {

@Override

            public void onClick(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

                dialog.dismiss();

}

});

btn_cancle.setOnClickListener(new View.OnClickListener() {

@Override

            public void onClick(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

                }

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(toRoundBitmap(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();

}

}

}

/**

* 把bitmap转成圆形

* */

    public Bitmap toRoundBitmap(Bitmap bitmap) {

int width = bitmap.getWidth();

int height = bitmap.getHeight();

int r =0;

// 取最短边做边长

        if (width < height) {

r = width;

}else {

r = height;

}

// 构建一个bitmap

        Bitmap backgroundBm = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

// new一个Canvas，在backgroundBmp上画图

        Canvas canvas =new Canvas(backgroundBm);

Paint p =new Paint();

// 设置边缘光滑，去掉锯齿

        p.setAntiAlias(true);

RectF rect =new RectF(0,0, r, r);

// 通过制定的rect画一个圆角矩形，当圆角X轴方向的半径等于Y轴方向的半径时，

// 且都等于r/2时，画出来的圆角矩形就是圆形

        canvas.drawRoundRect(rect, r /2, r /2, p);

// 设置当两个图形相交时的模式，SRC_IN为取SRC图形相交的部分，多余的将被去掉

        p.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));

// canvas将bitmap画在backgroundBmp上

        canvas.drawBitmap(bitmap,null, rect, p);

return backgroundBm;

}

}

3.photo_choose_dialog.xml

 

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="#00000000"

    android:gravity="bottom"

    android:orientation="vertical"

    android:padding="5dip" >

        android:id="@+id/btn_picture"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:background="@drawable/photo_gallery_selector"

        android:paddingBottom="10dip"

        android:paddingTop="10dip"

        android:text="图库"

        android:textSize="16sp" />

        android:layout_width="match_parent"

        android:layout_height="0.5dip"

        android:background="#DAD9DB" />

        android:id="@+id/btn_photo"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:background="@drawable/photo_camera_selector"

        android:paddingBottom="10dip"

        android:paddingTop="10dip"

        android:text="拍照"

        android:textSize="16sp" />

        android:id="@+id/btn_cancle"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="5dip"

        android:background="@drawable/photo_cancel_selector"

        android:paddingBottom="10dip"

        android:paddingTop="10dip"

        android:text="取消"

        android:textSize="16sp" />

4.在res目录下创建anim文件夹，在anim下写photo_dialog_in_anim.xml，photo_dialog_out_anim.xml

photo_dialog_in_anim.xml

   

        android:duration="500"

        android:fromXDelta="0"

        android:fromYDelta="1000"

        android:toXDelta="0"

        android:toYDelta="0" />

photo_dialog_out_anim.xml

    

        android:duration="500"

        android:fromXDelta="0"

        android:fromYDelta="0"

        android:toXDelta="0"

        android:toYDelta="1000" />

5.在values的styles中加入