drawableleft的图片与第一行文字对齐

package itcast.text.com.textviewdemo; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Canvas; import android.graphics.drawable.Drawable; import android.support.annotation.Nullable; import android.support.v7.widget.AppCompatTextView; import android.util.AttributeSet; import android.widget.TextView; /** * Created by DengXiao on 2017/4/7. */ public class TextViewDrawable extends android.support.v7.widget.AppCompatTextView { private int drawableLeftWidth, drawableTopWidth, drawableRightWidth, drawableBottomWidth; private int drawableLeftHeight, drawableTopHeight, drawableRightHeight, drawableBottomHeight; private boolean isAliganCenter = true; private boolean isDwMath_content = false; private int mWidth, mHeight; public TextViewDrawable(Context context) { this(context, null); } public TextViewDrawable(Context context, @Nullable AttributeSet attrs) { this(context, attrs, 0); } public TextViewDrawable(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); initView(context, attrs, defStyleAttr); } private void initView(Context context, AttributeSet attrs, int defStyleAttr) { TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.TextViewDrawable); drawableLeftWidth = typedArray.getDimensionPixelSize(R.styleable.TextViewDrawable_drawableLeftWidth, 0); drawableTopWidth = typedArray.getDimensionPixelSize(R.styleable.TextViewDrawable_drawableTopWidth, 0); drawableRightWidth = typedArray.getDimensionPixelSize(R.styleable.TextViewDrawable_drawableRightWidth, 0); drawableBottomWidth = typedArray.getDimensionPixelSize(R.styleable.TextViewDrawable_drawableBottomWidth, 0); drawableLeftHeight = typedArray.getDimensionPixelSize(R.styleable.TextViewDrawable_drawableLeftHeight, 0); drawableTopHeight = typedArray.getDimensionPixelSize(R.styleable.TextViewDrawable_drawableTopHeight, 0); drawableRightHeight = typedArray.getDimensionPixelSize(R.styleable.TextViewDrawable_drawableRightHeight, 0); drawableBottomHeight = typedArray.getDimensionPixelSize(R.styleable.TextViewDrawable_drawableBottomHeight, 0); isAliganCenter = typedArray.getBoolean(R.styleable.TextViewDrawable_isAliganCenter, true); typedArray.recycle(); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); mWidth = w; mHeight = h; 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); } private void setDrawable(Drawable drawable, int tag, int drawableWidth, int drawableHeight) { //获取图片实际长宽 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 = isAliganCenter ? 0 : -getLineCount() * getLineHeight() / 2 + getLineHeight() / 2; right = width; bottom = top + height; break; case 1: left = isAliganCenter ? 0 : -mWidth / 2 + width / 2; top = 0; right = left + width; bottom = top + height; break; } drawable.setBounds(left, top, right, bottom); } }