一般來(lái)說(shuō)TextView側(cè)邊的圖標(biāo)位置都是居中顯示的，并且圖標(biāo)大小是按照?qǐng)D標(biāo)的尺寸來(lái)顯示的捂寿。例如叉橱，假如你給TextView設(shè)置了drawableLeft，此時(shí)該圖標(biāo)的位置以及大小是不可控的者蠕，這樣就會(huì)出現(xiàn)兩種問(wèn)題：
1窃祝、如果TextView文字過(guò)長(zhǎng)導(dǎo)致?lián)Q行，然而左邊的圖標(biāo)仍然是按照TextView的高度垂直居中顯示踱侣，然而我們想要的卻是想讓圖標(biāo)在第一行居中顯示授嘀；
2、圖標(biāo)過(guò)大或者過(guò)小不可控怨绣；

此時(shí)就要考慮自定義TextView來(lái)解決此類(lèi)問(wèn)題了赋秀。具體思路為：
1、對(duì)于圖標(biāo)的位置待榔，可以考慮設(shè)置圖標(biāo)Drawable的整體偏移量逞壁；
2、對(duì)于圖標(biāo)的大小锐锣，則是自定義其大须绱场；

具體顯示效果如下：

圖標(biāo)方位及大小.png

具體實(shí)現(xiàn)如下：

public class DrawableTextView extends AppCompatTextView {
    // 控件左雕憔、上姿骏、右、下圖標(biāo)的寬和高
    private int drawableLeftWidth, drawableTopWidth, drawableRightWidth, drawableBottomWidth;
    private int drawableLeftHeight, drawableTopHeight, drawableRightHeight, drawableBottomHeight;
    // 默認(rèn)顯示方式
    private boolean alignCenter = true;
    private int mWidth;

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

    public DrawableTextView(Context context, @Nullable AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public DrawableTextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initView(context, attrs);
    }

    private void initView(Context context, AttributeSet attrs) {
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.DrawableTextView);
        drawableLeftWidth = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_drawableLeftWidth, 0);
        drawableTopWidth = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_drawableTopWidth, 0);
        drawableRightWidth = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_drawableRightWidth, 0);
        drawableBottomWidth = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_drawableBottomWidth, 0);
        drawableLeftHeight = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_drawableLeftHeight, 0);
        drawableTopHeight = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_drawableTopHeight, 0);
        drawableRightHeight = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_drawableRightHeight, 0);
        drawableBottomHeight = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_drawableBottomHeight, 0);
        alignCenter = typedArray.getBoolean(R.styleable.DrawableTextView_alignCenter, true);
        typedArray.recycle();
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        mWidth = w;
        Drawable[] drawables = getCompoundDrawables();
        Drawable drawableLeft = drawables[0];
        Drawable drawableTop = drawables[1];
        Drawable drawableRight = drawables[2];
        Drawable drawableBottom = drawables[3];
        if (drawableLeft != null) {
            setDrawable(drawableLeft, 0, drawableLeftWidth, drawableLeftHeight);
        }
        if (drawableTop != null) {
            setDrawable(drawableTop, 1, drawableTopWidth, drawableTopHeight);
        }
        if (drawableRight != null) {
            setDrawable(drawableRight, 2, drawableRightWidth, drawableRightHeight);
        }
        if (drawableBottom != null) {
            setDrawable(drawableBottom, 3, drawableBottomWidth, drawableBottomHeight);
        }
        this.setCompoundDrawables(drawableLeft, drawableTop, drawableRight, drawableBottom);
    }

    /**
     * 設(shè)置圖標(biāo)大小及其偏移量
     */
    private void setDrawable(Drawable drawable, int tag, int drawableWidth, int drawableHeight) {
        int width = drawableWidth == 0 ? drawable.getIntrinsicWidth() : drawableWidth;
        int height = drawableHeight == 0 ? drawable.getIntrinsicHeight() : drawableHeight;
        int left = 0, top = 0, right = 0, bottom = 0;
        switch (tag) {
            case 0:
            case 2:
                left = 0;
                top = alignCenter ? 0 : -getLineCount() * getLineHeight() / 2 + getLineHeight() / 2;
                right = width;
                bottom = top + height;
                break;
            case 1:
            case 3:
                left = alignCenter ? 0 : -mWidth / 2 + width / 2;
                top = 0;
                right = left + width;
                bottom = top + height;
                break;
        }
        drawable.setBounds(left, top, right, bottom);
    }
}