本文实例为大家分享了闪耀字体效果的具体代码，供大家参考，具体内容如下
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Shader;
import android.util.AttributeSet;
import android.widget.TextView;
/**
* 闪耀字体
*/
public class ShiningFontView extends TextView {
private int mViewWidth;
private Paint mPaint;
private LinearGradient mLinearGradient;
private Matrix mGradientMatrix;
private int mTranslate;
public ShiningFontView(Context context) {
super(context);
}
public ShiningFontView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ShiningFontView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
if (mViewWidth == 0) {
mViewWidth = getMeasuredWidth();
if (mViewWidth > 0) {
mPaint = getPaint();
mLinearGradient = new LinearGradient(0, 0, mViewWidth, 0, new int[]{Color.BLUE, 0xffffffff, Color.BLUE}, null, Shader.TileMode.CLAMP);
mPaint.setShader(mLinearGradient);
mGradientMatrix = new Matrix();
}
}
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (mGradientMatrix != null) {
mTranslate += mViewWidth / 5;
if (mTranslate > 2 * mViewWidth) {
mTranslate = -mViewWidth;
}
mGradientMatrix.setTranslate(mTranslate, 0);
mLinearGradient.setLocalMatrix(mGradientMatrix);
postInvalidateDelayed(100);
}
}
}
使用方式如下
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="@dimen/margin_10"
android:layout_toRightOf="@id/iv_tips1_icon"
android:text="@string/tips1" />
效果图如下
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
