仿微信底部TAG完美渐变 - Android

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仿微信底部TAG完美渐变(二)

2017-10-12 11:28:38 【大中小】浏览:10920次

ivate void initTabIndicator() { ChangeColorIconWithTextView one = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_one); ChangeColorIconWithTextView two = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_two); mTabIndicator.add(one); mTabIndicator.add(two); one.setOnClickListener(this); two.setOnClickListener(this); one.setIconAlpha(1.0f); } @Override public void onPageSelected(int arg0) { } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { if (positionOffset > 0) { ChangeColorIconWithTextView left = mTabIndicator.get(position); ChangeColorIconWithTextView right = mTabIndicator.get(position + 1); left.setIconAlpha(1 - positionOffset); right.setIconAlpha(positionOffset); } } @Override public void onPageScrollStateChanged(int state) { } @Override public void onClick(View v) { resetOtherTabs(); switch (v.getId()) { case R.id.id_indicator_one: mTabIndicator.get(0).setIconAlpha(1.0f); mViewPager.setCurrentItem(0, false); break; case R.id.id_indicator_two: mTabIndicator.get(1).setIconAlpha(1.0f); mViewPager.setCurrentItem(1, false); break; } } /** * 重置其他的Tab */ private void resetOtherTabs() { for (int i = 0; i < mTabIndicator.size(); i++) { mTabIndicator.get(i).setIconAlpha(0); } } private void setOverflowShowingAlways() { try { // true if a permanent menu key is present, false otherwise. ViewConfiguration config = ViewConfiguration.get(this); Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey"); menuKeyField.setAccessible(true); menuKeyField.setBoolean(config, false); } catch (Exception e) { e.printStackTrace(); } } public class MyPagerAdapter extends FragmentPagerAdapter { public MyPagerAdapter(FragmentManager fm) { super(fm); } private final String[] titles = { "选项一", "选项二"}; @Override public CharSequence getPageTitle(int position) { return titles[position]; } @Override public int getCount() { return titles.length; } @Override public Fragment getItem(int position) { switch (position) { case 0: if (returnVisit == null) { returnVisit = new FrgReturnVisit(); } return returnVisit; case 1: if (microVisit == null) { microVisit = new FrgMicroVisit(); } return microVisit; default: return null; } } } }

ChangeColorIconWithTextView.java

package com.Sing.weixin;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.os.Looper;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.View;

public class ChangeColorI

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