0:
项目中遇到一个非常喜欢渐变色的UI,没办法只能上网查查,都不是很符合,看到一个是hongyang大神的,很炫,但是我想要不动的那种,所以结合自己查的资料写个不动的渐变色TextView
1:
直接上代码
public MyTextView(Context context) {
super(context);
}
public MyTextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
getAttrs(context, attrs);
}
public MyTextView(Context context, AttributeSet attrs) {
super(context, attrs);
getAttrs(context, attrs);
}
private void getAttrs(Context context, AttributeSet attrs){
TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.mtv);
startcolor = ta.getColor(R.styleable.mtv_start_color, 0x00000000);
endcolor = ta.getColor(R.styleable.mtv_end_color, 0x00000000);
ta.recycle();
}
@Override
protected void onDraw(Canvas canvas) {
mViewWidth = getMeasuredWidth();
mPaint = getPaint();
String mTipText = getText().toString();
colors = new int[]{startcolor, endcolor};
mPaint.getTextBounds(mTipText, 0, mTipText.length(), mTextBound);
mLinearGradient = new LinearGradient(0, 0, mViewWidth, 0,
colors,
null, Shader.TileMode.REPEAT);
mPaint.setShader(mLinearGradient);
canvas.drawText(mTipText, getMeasuredWidth() / 2 - mTextBound.width() / 2, getMeasuredHeight() / 2 + mTextBound.height()/2, mPaint);
}
重写了onDraw方法,主要是LinearGradient这个参数,colors是一个数组,里边放16进制的颜色值,这个值从构造方法中获得,通过getAttrs方法
values目录下 写一个attrs.xml
<resources>
<declare-styleable name="mtv">
<attr name="start_color" format="color"/>
<attr name="end_color" format="color"/>
</declare-styleable>
</resources>
然后再在布局文件中直接调用就好了
<com.konglsd.it.ggapp.Custom.MyTextView
android:clickable="true"
android:id="@+id/man"
mtv:start_color="#0A59C4"
mtv:end_color="#3C92FF"
android:textSize="16sp"
android:gravity="center"
android:text="男"
android:layout_width="match_parent"
android:layout_height="@dimen/y53" />
本来想写的详细点的,因为韦昕同学的原因懒得写了,就这样吧