textview带有右上角文字

1.RightUpperCornerText 代码

public class RightUpperCornerText extends TextView {
    private Paint mPaint;
    private String mCornerText;
    private Context mContext;

    public RightUpperCornerText(Context context) {
        super(context);
        init(context);
    }

    public RightUpperCornerText(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public RightUpperCornerText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init(context);
    }

    private void init(Context context) {
        mContext = context;
        mPaint = new Paint();
        mPaint.setAntiAlias(true);
        mPaint.setColor(Color.WHITE);

        float cornerSize = getTextSize() * 0.6f;
        if (cornerSize > 50) {
            cornerSize = 50;
        }
        mPaint.setTextSize(cornerSize);
        mCornerText = "";
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        // 不要忘了设置 Padding
        String text = (String) getText();
        Rect bounds = new Rect();
        getPaint().getTextBounds(text, 0, text.length(), bounds);
        canvas.drawText(mCornerText, getPaddingLeft() + bounds.right + bounds.left,
                (canvas.getHeight() + bounds.top) / 2 + mPaint.measureText(mCornerText),
                mPaint);

    }

    public void setCornertext(String text) {
        mCornerText = text;
    }

    public void setCornertextSize(float size) {
        mPaint.setTextSize(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
                size, mContext.getResources().getDisplayMetrics()));
        invalidate();
    }
}

2. 用法

<com.ilegendsoft.toprankapps.cleanmaster.UI.RightUpperCornerText
    android:id="@+id/dashboard_percentage"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="20dp"
    android:layout_centerInParent="true"
    android:textColor="@android:color/white"
    android:textSize="26sp" />

mPercentageView.setCornertext(cornerText);

注意 android:padding="20dp"设置padding 很重要，否则没地方画了。

3. 其实完全没必要自定义，采用TextView Style可以实现各种样式的字体排版，就是SpannableString

先看下图片

具体参考如下链接：

• TextView使用SpannableString设置复合文本
• Android文本样式