JAVA高级面试进阶训练营视频教程

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先上个图吧 .点击头像弹出下面对话框,然后直接上代码.

头像是自定义控件实现的圆形头像,当然就目前而言 想要实现 圆形头像的资料太多了,随便找个就行

<com.kuibu.jucai.widget.CircleImageView
            style="@style/UserFaceImageStyle"
            app:border_color="@color/white"
            app:border_width="2dip"
            android:id="@+id/header_img"
             />

对应样式:

<!-- 用户头像的样式 -->
    <style name="UserFaceImageStyle">
        <item name="android:layout_width">60.0dip</item>
        <item name="android:layout_height">60.0dip</item>
        <item name="android:padding">1.0dip</item>
        <item name="android:clickable">true</item>
        <item name="android:contentDescription">face</item>
        <item name="android:src">@mipmap/widget_dface</item>
        <item name="android:layout_alignParentRight">true</item>
        <item name="android:layout_centerVertical">true</item>
    </style>

圆形头像自定义类

public class CircleImageView extends ImageView {

    private static final ScaleType SCALE_TYPE = ScaleType.CENTER_CROP;

    private static final Bitmap.Config BITMAP_CONFIG = Bitmap.Config.ARGB_8888;
    private static final int COLORDRAWABLE_DIMENSION = 1;

    private static final int DEFAULT_BORDER_WIDTH = 0;
    private static final int DEFAULT_BORDER_COLOR = Color.BLACK;

    private final RectF mDrawableRect = new RectF();
    private final RectF mBorderRect = new RectF();

    private final Matrix mShaderMatrix = new Matrix();
    private final Paint mBitmapPaint = new Paint();
    private final Paint mBorderPaint = new Paint();

    private int mBorderColor = DEFAULT_BORDER_COLOR;
    private int mBorderWidth = DEFAULT_BORDER_WIDTH;

    private Bitmap mBitmap;
    private BitmapShader mBitmapShader;
    private int mBitmapWidth;
    private int mBitmapHeight;

    private float mDrawableRadius;
    private float mBorderRadius;

    private boolean mReady;
    private boolean mSetupPending;

    //默认显示圆形
    private boolean isDisplayCircle = true;

    public CircleImageView(Context context) {
        this(context, null);
    }

    public CircleImageView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public CircleImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        super.setScaleType(SCALE_TYPE);

        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CircleImageView, defStyle, 0);

        mBorderWidth = a.getDimensionPixelSize(R.styleable.CircleImageView_border_width, DEFAULT_BORDER_WIDTH);
        mBorderColor = a.getColor(R.styleable.CircleImageView_border_color, DEFAULT_BORDER_COLOR);

        a.recycle();

        mReady = true;

        if (mSetupPending) {
            setup();
            mSetupPending = false;
        }
    }

    @Override
    public ScaleType getScaleType() {
        return SCALE_TYPE;
    }

    @Override
    public void setScaleType(ScaleType scaleType) {
        if (scaleType != SCALE_TYPE) {
            throw new IllegalArgumentException(String.format("ScaleType %s not supported.", scaleType));
        }
    }

    @Override
    protected void onDraw(Canvas canvas) {
        if(!isDisplayCircle) {
            super.onDraw(canvas);
            return;
        }
        if (getDrawable() == null) {
            return;
        }

        canvas.drawCircle(getWidth() / 2, getHeight() / 2, mDrawableRadius, mBitmapPaint);
        if(mBorderWidth != 0){
          canvas.drawCircle(getWidth() / 2, getHeight() / 2, mBorderRadius, mBorderPaint);
        }
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        setup();
    }

    public void setDisplayCircle(boolean isDisplayCircle) {
        this.isDisplayCircle = isDisplayCircle;
    }

    public int getBorderColor() {
        return mBorderColor;
    }

    public void setBorderColor(int borderColor) {
        if (borderColor == mBorderColor) {
            return;
        }

        mBorderColor = borderColor;
        mBorderPaint.setColor(mBorderColor);
        invalidate();
    }

    public int getBorderWidth() {
        return mBorderWidth;
    }
    
    public void setBorderWidth(int borderWidth) {
        if (borderWidth == mBorderWidth) {
            return;
        }

        mBorderWidth = borderWidth;
        setup();
    }

    @Override
    public void setImageBitmap(Bitmap bm) {
        super.setImageBitmap(bm);
        mBitmap = bm;
        setup();
    }

    @Override
    public void setImageDrawable(Drawable drawable) {
        super.setImageDrawable(drawable);
        mBitmap = getBitmapFromDrawable(drawable);
        setup();
    }

    @Override
    public void setImageResource(int resId) {
        super.setImageResource(resId);
        mBitmap = getBitmapFromDrawable(getDrawable());
        setup();
    }

    private Bitmap getBitmapFromDrawable(Drawable drawable) {
        if (drawable == null) {
            return null;
        }

        if (drawable instanceof BitmapDrawable) {
            return ((BitmapDrawable) drawable).getBitmap();
        }

        try {
            Bitmap bitmap;

            if (drawable instanceof ColorDrawable) {
                bitmap = Bitmap.createBitmap(COLORDRAWABLE_DIMENSION, COLORDRAWABLE_DIMENSION, BITMAP_CONFIG);
            } else {
                bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), BITMAP_CONFIG);
            }

            Canvas canvas = new Canvas(bitmap);
            drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
            drawable.draw(canvas);
            return bitmap;
        } catch (OutOfMemoryError e) {
            return null;
        }
    }

    private void setup() {
        if (!mReady) {
            mSetupPending = true;
            return;
        }

        if (mBitmap == null) {
            return;
        }

        mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);

        mBitmapPaint.setAntiAlias(true);
        mBitmapPaint.setShader(mBitmapShader);

        mBorderPaint.setStyle(Paint.Style.STROKE);
        mBorderPaint.setAntiAlias(true);
        mBorderPaint.setColor(mBorderColor);
        mBorderPaint.setStrokeWidth(mBorderWidth);

        mBitmapHeight = mBitmap.getHeight();
        mBitmapWidth = mBitmap.getWidth();

        mBorderRect.set(0, 0, getWidth(), getHeight());
        mBorderRadius = Math.min((mBorderRect.height() - mBorderWidth) / 2, (mBorderRect.width() - mBorderWidth) / 2);

        mDrawableRect.set(mBorderWidth, mBorderWidth, mBorderRect.width() - mBorderWidth, mBorderRect.height() - mBorderWidth);
        mDrawableRadius = Math.min(mDrawableRect.height() / 2, mDrawableRect.width() / 2);

        updateShaderMatrix();
        invalidate();
    }

    private void updateShaderMatrix() {
        float scale;
        float dx = 0;
        float dy = 0;

        mShaderMatrix.set(null);

        if (mBitmapWidth * mDrawableRect.height() > mDrawableRect.width() * mBitmapHeight) {
            scale = mDrawableRect.height() / (float) mBitmapHeight;
            dx = (mDrawableRect.width() - mBitmapWidth * scale) * 0.5f;
        } else {
            scale = mDrawableRect.width() / (float) mBitmapWidth;
            dy = (mDrawableRect.height() - mBitmapHeight * scale) * 0.5f;
        }

        mShaderMatrix.setScale(scale, scale);
        mShaderMatrix.postTranslate((int) (dx + 0.5f) + mBorderWidth, (int) (dy + 0.5f) + mBorderWidth);

        mBitmapShader.setLocalMatrix(mShaderMatrix);
    }

}

 

点击头像后的代码如下: 这里传递的是base64字符串.  当然也可以不转成base64,直接传递拍照后的 地址也是可以的.根据接口来定

另外本类需实现implements EasyPermissions.PermissionCallbacks 该接口

private final static int CROP = 200;//输出图片大小
private final static String FILE_SAVEPATH = Environment
        .getExternalStorageDirectory().getAbsolutePath()
        + "/JuCai/Portrait/";
private Uri origUri;
private File protraitFile;
private Bitmap protraitBitmap;
private String protraitPath;
private static final int CAMERA_PERM = 1;
private String result_base64;

/**
     * 选择图片获取方式
     */
    private void updateImg(){
        new ActionSheetDialog(getActivity()).Builder()
                .addSheetItem("拍照", ActionSheetDialog.SheetItemColor.BULE, new ActionSheetDialog.OnSheetItemClickListener() {
                    @Override
                    public void onClick(int witch) {
                        startTakePhotoByPermissions();
                    }
                }).addSheetItem("打开相册", ActionSheetDialog.SheetItemColor.BULE, new ActionSheetDialog.OnSheetItemClickListener() {
            @Override
            public void onClick(int witch) {
                startImagePick();
            }
        }).show();
    }

    /*
   * 选择图片后 剪切
   */
    private void startImagePick() {
        Intent intent;
        if (Build.VERSION.SDK_INT < 19) {
            intent = new Intent();
            intent.setAction(Intent.ACTION_GET_CONTENT);
            intent.setType("image/*");
            startActivityForResult(Intent.createChooser(intent, "选择图片"),
                    ImageUtils.REQUEST_CODE_GETIMAGE_BYCROP);
        } else {
            intent = new Intent(Intent.ACTION_PICK,
                    MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            intent.setType("image/*");
            startActivityForResult(Intent.createChooser(intent, "选择图片"),
                    ImageUtils.REQUEST_CODE_GETIMAGE_BYCROP);
        }
    }

    /**
     * 相机拍照
     */
    private void startTakePhoto() {
        Intent intent;
        // 判断是否挂载了SD卡
        String savePath = "";
        String storageState = Environment.getExternalStorageState();
        if (storageState.equals(Environment.MEDIA_MOUNTED)) {
            savePath = Environment.getExternalStorageDirectory()
                    .getAbsolutePath() + "/JuCai/Camera/";
            File savedir = new File(savePath);
            if (!savedir.exists()) {
                savedir.mkdirs();
            }
        }

        // 没有挂载SD卡，无法保存文件
        if (TextUtils.isEmpty(savePath)) {
            ToastUtils.showToast(this,"无法保存照片，请检查SD卡是否挂载");
            return;
        }

        String timeStamp = new SimpleDateFormat("yyyyMMddHHmmss")
                .format(new Date());
        String fileName = "osc_" + timeStamp + ".jpg";// 照片命名
        File out = new File(savePath, fileName);
        Uri uri = Uri.fromFile(out);
        origUri = uri;

        String theLarge = savePath + fileName;

        intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
        startActivityForResult(intent,
                ImageUtils.REQUEST_CODE_GETIMAGE_BYCAMERA);
    }
    // 裁剪头像的绝对路径
    private Uri getUploadTempFile(Uri uri) {
        String storageState = Environment.getExternalStorageState();
        if (storageState.equals(Environment.MEDIA_MOUNTED)) {
            File savedir = new File(FILE_SAVEPATH);
            if (!savedir.exists()) {
                savedir.mkdirs();
            }
        } else {
            ToastUtils.showToast(this,"无法保存上传的头像，请检查SD卡是否挂载");
            return null;
        }
        String timeStamp = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());
        String thePath = ImageUtils.getAbsolutePathFromNoStandardUri(uri);

        // 如果是标准Uri
        if (TextUtils.isEmpty(thePath)) {
            thePath = ImageUtils.getAbsoluteImagePath(this, uri);
        }
        String ext = FileUtil.getFileFormat(thePath);
        ext = TextUtils.isEmpty(ext) ? "jpg" : ext;
        // 照片命名
        String cropFileName = "osc_crop_" + timeStamp + "." + ext;
        // 裁剪头像的绝对路径
        protraitPath = FILE_SAVEPATH + cropFileName;
        protraitFile = new File(protraitPath);

        return Uri.fromFile(protraitFile);
    }

    /**
     * 拍照后裁剪
     *
     * @param data 原始图片
     */
    private void startActionCrop(Uri data) {
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(data, "image/*");
        intent.putExtra("output", this.getUploadTempFile(data));
        intent.putExtra("crop", "true");
        intent.putExtra("aspectX", 1);// 裁剪框比例
        intent.putExtra("aspectY", 1);
        intent.putExtra("outputX", CROP);// 输出图片大小
        intent.putExtra("outputY", CROP);
        intent.putExtra("scale", true);// 去黑边
        intent.putExtra("scaleUpIfNeeded", true);// 去黑边
        startActivityForResult(intent,
                ImageUtils.REQUEST_CODE_GETIMAGE_BYSDCARD);
    }
    @Override
    public void onActivityResult(final int requestCode, final int resultCode,
                                 final Intent imageReturnIntent) {
        if (resultCode != Activity.RESULT_OK)
            return;

        switch (requestCode) {
            case ImageUtils.REQUEST_CODE_GETIMAGE_BYCAMERA:
                startActionCrop(origUri);// 拍照后裁剪
                break;
            case ImageUtils.REQUEST_CODE_GETIMAGE_BYCROP:
                startActionCrop(imageReturnIntent.getData());// 选图后裁剪
                break;
            case ImageUtils.REQUEST_CODE_GETIMAGE_BYSDCARD:
                uploadNewPhoto();
                break;
        }
    }

    @AfterPermissionGranted(CAMERA_PERM)
    private void startTakePhotoByPermissions() {
        String[] perms = {Manifest.permission.CAMERA};
        if (EasyPermissions.hasPermissions(this, perms)) {
            try {
                startTakePhoto();
            } catch (Exception e) {
                Toast.makeText(this, R.string.permissions_camera_error, Toast.LENGTH_LONG).show();
            }
        } else {
            // Request one permission
            EasyPermissions.requestPermissions(this,
                    getResources().getString(R.string.str_request_camera_message),
                    CAMERA_PERM, perms);
        }
    }

    @Override
    public void onPermissionsGranted(int requestCode, List<String> perms) {
        try {
            startTakePhoto();
        } catch (Exception e) {
            Toast.makeText(getActivity(), R.string.permissions_camera_error, Toast.LENGTH_LONG).show();
        }
    }

    @Override
    public void onPermissionsDenied(int requestCode, List<String> perms) {
        Toast.makeText(getActivity(), R.string.permissions_camera_error, Toast.LENGTH_LONG).show();
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);
    }

    //TODO 最后一步访问网络上传图片
    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    private void uploadNewPhoto() {
        if (!TextUtils.isEmpty(protraitPath) && protraitFile.exists()) {
            protraitBitmap = ImageUtils
                    .loadImgThumbnail(protraitPath, 200, 200);
            //显示获取的图片
            //headerImg.setBackground(new BitmapDrawable(protraitBitmap));
            headerImg.setImageBitmap(protraitBitmap);
            //Glide.with(getActivity(),)
        } else {
            ToastUtils.showToast(getActivity(),"图像不存在，上传失败");
        }
        if (protraitBitmap != null) {
            //拿着  protraitFile 转成 base64 字节流 然后上传
　　　　　　　//此处根据接口来定,我们接口接收的是base64,有的接口接收的是一个地址,如果是图片地址,那就直接拿着地址传递

            result_base64 = imgToBase64(protraitPath, protraitBitmap);
            //执行上传
            sendData();
        }
    }

    private void sendData() {
        params.put("user_id", SPUtils.get(getActivity(), SPUtils.KEY_USER_ID, ""));
        params.put("portrait", result_base64);
        Log.e("头像上传参数",params.toString());
        httpHelper.post(HttpUrl.mine_upload_img, params, new SimpleCallback<MineResponse>(getActivity()) {
            @Override
            public void onSuccess(Response response, MineResponse item) {
                if (item.status == 1) {
                    ToastUtils.showToast(getActivity(), item.msg);
                    finish();
                } else if (item.status == 0) {
                    ToastUtils.showToast(getActivity(), item.msg);
                }
            }

            @Override
            public void onError(Response response, int code, Exception e) {}
        });
    }

    /**
     * 将图片转成base64流
     * @param imgPath
     * @param bitmap
    //* @param imgFormat 图片格式
     * @return
     */
    public static String imgToBase64(String imgPath, Bitmap bitmap) {
        if (imgPath !=null && imgPath.length() > 0) {
            bitmap = readBitmap(imgPath);
        }
        ByteArrayOutputStream out = null;
        try {
            out = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.JPEG, 40, out);
            out.flush();
            out.close();
            byte[] imgBytes = out.toByteArray();
            return Base64.encodeToString(imgBytes, Base64.DEFAULT);
        } catch (Exception e) {
            return null;
        } finally {
            try {
                out.flush();
                out.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 将图片转成 Bitmap对象
     * @param imgPath
     * @return
     */
    private static Bitmap readBitmap(String imgPath) {
        try {
            return BitmapFactory.decodeFile(imgPath);
        } catch (Exception e) {
            return null;
        }
    }

顺便给出里面的 自定义 Dialog弹出框吧

public class ActionSheetDialog {

    private Context context;
    private Dialog dialog;
    private TextView txt_title;
    private TextView txt_cancel;
    private LinearLayout lLayout_content;
    private ScrollView sLayout_content;
    private boolean showTitle = false;
    private List<SheetItem> sheetItemList;
    private Display display;

    public ActionSheetDialog(Context context){
        this.context = context;
        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        display = windowManager.getDefaultDisplay();
    }

    public ActionSheetDialog Builder(){
        // 获取Dialog布局
        View view = LayoutInflater.from(context).inflate(R.layout.view_actionsheet,null);
        // dialog的最小宽，设置屏幕宽度为
        view.setMinimumWidth(display.getWidth());
        //获取xml文件中的控件

        sLayout_content = (ScrollView) view.findViewById(R.id.sLayout_content);
        lLayout_content = (LinearLayout) view.findViewById(R.id.lLayout_content);
        txt_title = (TextView) view.findViewById(R.id.txt_title);
        txt_cancel = (TextView) view.findViewById(R.id.txt_cancel);
        txt_cancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });

        //定义 dialog的布局和参数
        dialog = new Dialog(context, R.style.ActionSheetDialogStyle);
        dialog.setContentView(view);
        Window dialogWindow = dialog.getWindow();
        dialogWindow.setGravity(Gravity.LEFT | Gravity.BOTTOM);
        WindowManager.LayoutParams lp = dialogWindow.getAttributes();
        lp.x = 0;
        lp.y = 0;
        dialogWindow.setAttributes(lp);

        return this;
    }

    public ActionSheetDialog setTitle(String title) {
        showTitle = true;
        txt_title.setVisibility(View.VISIBLE);
        txt_title.setText(title);
        return this;
    }

    public ActionSheetDialog setCancelable(boolean cancel) {
        dialog.setCancelable(cancel);
        return this;
    }

    public ActionSheetDialog setCanceledOnTouchOutside(boolean cancel) {
        dialog.setCanceledOnTouchOutside(cancel);
        return this;
    }
    public ActionSheetDialog addSheetItem(String itemName, SheetItemColor itemTextColor, OnSheetItemClickListener listener){
        if(null == sheetItemList){
            sheetItemList = new ArrayList<SheetItem>();
        }
        sheetItemList.add(new SheetItem(itemName, itemTextColor, listener));

        return this;
    }


    public void show(){
        setSheetItems();
        dialog.show();
    }

    private void setSheetItems() {

        if (sheetItemList == null || sheetItemList.size() <= 0){
            return;
        }

        int size = sheetItemList.size();
        // 控制高度
        if (size > 5){
            LayoutParams params = sLayout_content.getLayoutParams();

            params.height = display.getHeight()/2;

            sLayout_content.setLayoutParams(params);
        }


        for (int i = 1; i <= size; i++) {
            final  int index = i;
            SheetItem sheetItem = sheetItemList.get(i-1);

            String itemName = sheetItem.name;
            SheetItemColor itemTextcolor = sheetItem.color;
            final OnSheetItemClickListener listener = sheetItem.listener;

            TextView textView = new TextView(context);
            textView.setText(itemName);
            textView.setTextSize(18);
            textView.setGravity(Gravity.CENTER);

            if (size == 1){
                if(showTitle){
                    textView.setBackgroundResource(R.drawable.actionsheet_bottom_selector);
                }else{
                    textView.setBackgroundResource(R.drawable.actionsheet_top_selector);
                }
            }else {
                if (showTitle){
                    if (i >= 1 && i < size) {
                        textView.setBackgroundResource(R.drawable.actionsheet_middle_selector);
                    } else {
                        textView.setBackgroundResource(R.drawable.actionsheet_bottom_selector);
                    }
                }else {
                    if (i == 1) {
                        textView.setBackgroundResource(R.drawable.actionsheet_top_selector);
                    } else if (i < size) {
                        textView.setBackgroundResource(R.drawable.actionsheet_middle_selector);
                    } else {
                        textView.setBackgroundResource(R.drawable.actionsheet_bottom_selector);
                    }
                }
            }

            //字体颜色
            if (null != itemTextcolor){
                textView.setTextColor(Color.parseColor(itemTextcolor.getName()));
            }else{
                textView.setTextColor(Color.parseColor(SheetItemColor.BULE.getName()));
            }
            //高度
            float scale = context.getResources().getDisplayMetrics().density;
            int height = (int) (45 * scale + 0.5f);
            textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, height));

            //点击事件
            textView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    listener.onClick(index);
                    dialog.dismiss();
                }
            });

            lLayout_content.addView(textView);

        }
    }


    public interface OnSheetItemClickListener{
       void onClick(int witch);
    }

    private class  SheetItem{
        String name;
        OnSheetItemClickListener listener;
        SheetItemColor color;

        public SheetItem(String name, SheetItemColor color, OnSheetItemClickListener listener) {
            this.name = name;
            this.listener = listener;
            this.color = color;
        }
    }

    public enum SheetItemColor{
        BULE("#037BFF"),RED("#FD4A2E");

        String name ;

        private SheetItemColor(String name){
            this.name = name;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }
    }
}

对应布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="8dp" >

    <TextView
        android:id="@+id/txt_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/actionsheet_top_normal"
        android:gravity="center"
        android:minHeight="45dp"
        android:paddingTop="10dp"
        android:paddingBottom="10dp"
        android:paddingLeft="15dp"
        android:paddingRight="15dp"
        android:textColor="@color/gray"
        android:textSize="13sp"
        android:visibility="gone"
        />

    <ScrollView
        android:id="@+id/sLayout_content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fadingEdge="none"
        >

        <LinearLayout
            android:id="@+id/lLayout_content"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >
        </LinearLayout>
    </ScrollView>

    <TextView
        android:id="@+id/txt_cancel"
        android:layout_width="match_parent"
        android:layout_height="45dp"
        android:layout_marginTop="8dp"
        android:background="@drawable/actionsheet_single_selector"
        android:gravity="center"
        android:text="取消"
        android:textColor="@color/cancel"
        android:textSize="18sp"
        />
</LinearLayout>

里面用的 selector 中的 .9图 就不发了. 一个灰色的 一个白色的. 自己在线制作一个.9图就行了. 在线制作地址如下:

http://romannurik.github.io/AndroidAssetStudio/nine-patches.html