冷色调网站,wordpress给页面html后缀,建设百度网站,html手机网站模板效果图 原理介绍 1、先绘制一个颜色#xff08;例如#xff1a;粉红#xff09; 2、设置ModeDST_IN 3、绘制我们这个可爱的小机器人 回答我#xff0c;显示什么#xff0c;是不是显示交集#xff0c;交集是什么#xff1f;交集是我们的小机器人的非透明区域#xff…效果图 原理介绍 1、先绘制一个颜色例如粉红 2、设置ModeDST_IN 3、绘制我们这个可爱的小机器人 回答我显示什么是不是显示交集交集是什么交集是我们的小机器人的非透明区域也就是那张脸除了两个眼 好了那怎么变色呢 我绘制一个颜色的时候难道不能设置alpha么
自定义图标控件
自定义属性
?xml version1.0 encodingutf-8?
resources attr nameicon formatreference / attr namecolor formatcolor / attr nametext formatstring / attr nametext_size formatdimension / declare-styleable nameChangeColorIconView attr nameicon / attr namecolor / attr nametext / attr nametext_size / /declare-styleable /resources
绘制图标
绘制图标有很多步骤呀我来列一列 1、计算alpha默认为0 2、绘制原图 3、在绘图区域绘制一个纯色块设置了alpha此步绘制在内存的bitmap上 4、设置mode针对内存中的bitmap上的paint 5、绘制我们的图标此步绘制在内存的bitmap上 6、绘制原文本 7、绘制设置alpha和颜色后的文本 8、将内存中的bitmap绘制出来 根据上面的步骤可以看出来我们的图标其实绘制了两次为什么要绘制原图呢因为我觉得比较好看。 3-5步骤就是我们上面分析的原理 6-7步是绘制文本可以看到我们的文本就是通过设置alpha实现的
package com.zhy.weixin6.ui;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.Log;
import android.util.TypedValue;
import android.view.View;public class ChangeColorIconWithTextView extends View
{private Bitmap mBitmap;private Canvas mCanvas;private Paint mPaint;/*** 颜色*/private int mColor 0xFF45C01A;/*** 透明度 0.0-1.0*/private float mAlpha 0f;/*** 图标*/private Bitmap mIconBitmap;/*** 限制绘制icon的范围*/private Rect mIconRect;/*** icon底部文本*/private String mText 微信;private int mTextSize (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 10, getResources().getDisplayMetrics());private Paint mTextPaint;private Rect mTextBound new Rect();public ChangeColorIconWithTextView(Context context){super(context);}/*** 初始化自定义属性值* * param context* param attrs*/public ChangeColorIconWithTextView(Context context, AttributeSet attrs){super(context, attrs);// 获取设置的图标TypedArray a context.obtainStyledAttributes(attrs,R.styleable.ChangeColorIconView);int n a.getIndexCount();for (int i 0; i n; i){int attr a.getIndex(i);switch (attr){case R.styleable.ChangeColorIconView_icon:BitmapDrawable drawable (BitmapDrawable) a.getDrawable(attr);mIconBitmap drawable.getBitmap();break;case R.styleable.ChangeColorIconView_color:mColor a.getColor(attr, 0x45C01A);break;case R.styleable.ChangeColorIconView_text:mText a.getString(attr);break;case R.styleable.ChangeColorIconView_text_size:mTextSize (int) a.getDimension(attr, TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 10,getResources().getDisplayMetrics()));break;}}a.recycle();mTextPaint new Paint();mTextPaint.setTextSize(mTextSize);mTextPaint.setColor(0xff555555);// 得到text绘制范围mTextPaint.getTextBounds(mText, 0, mText.length(), mTextBound);}Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){super.onMeasure(widthMeasureSpec, heightMeasureSpec);// 得到绘制icon的宽int bitmapWidth Math.min(getMeasuredWidth() - getPaddingLeft()- getPaddingRight(), getMeasuredHeight() - getPaddingTop()- getPaddingBottom() - mTextBound.height());int left getMeasuredWidth() / 2 - bitmapWidth / 2;int top (getMeasuredHeight() - mTextBound.height()) / 2 - bitmapWidth/ 2;// 设置icon的绘制范围mIconRect new Rect(left, top, left bitmapWidth, top bitmapWidth);}Overrideprotected void onDraw(Canvas canvas){int alpha (int) Math.ceil((255 * mAlpha));canvas.drawBitmap(mIconBitmap, null, mIconRect, null);setupTargetBitmap(alpha);drawSourceText(canvas, alpha);drawTargetText(canvas, alpha);canvas.drawBitmap(mBitmap, 0, 0, null);}private void setupTargetBitmap(int alpha){mBitmap Bitmap.createBitmap(getMeasuredWidth(), getMeasuredHeight(),Config.ARGB_8888);mCanvas new Canvas(mBitmap);mPaint new Paint();mPaint.setColor(mColor);mPaint.setAntiAlias(true);mPaint.setDither(true);mPaint.setAlpha(alpha);mCanvas.drawRect(mIconRect, mPaint);mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));mPaint.setAlpha(255);mCanvas.drawBitmap(mIconBitmap, null, mIconRect, mPaint);}private void drawSourceText(Canvas canvas, int alpha){mTextPaint.setTextSize(mTextSize);mTextPaint.setColor(0xff333333);mTextPaint.setAlpha(255 - alpha);canvas.drawText(mText, mIconRect.left mIconRect.width() / 2- mTextBound.width() / 2,mIconRect.bottom mTextBound.height(), mTextPaint);}private void drawTargetText(Canvas canvas, int alpha){mTextPaint.setColor(mColor);mTextPaint.setAlpha(alpha);canvas.drawText(mText, mIconRect.left mIconRect.width() / 2- mTextBound.width() / 2,mIconRect.bottom mTextBound.height(), mTextPaint);}public void setIconAlpha(float alpha){this.mAlpha alpha;invalidateView();}private void invalidateView(){if (Looper.getMainLooper() Looper.myLooper()){invalidate();} else{postInvalidate();}}public void setIconColor(int color){mColor color;}public void setIcon(int resId){this.mIconBitmap BitmapFactory.decodeResource(getResources(), resId);if (mIconRect ! null)invalidateView();}public void setIcon(Bitmap iconBitmap){this.mIconBitmap iconBitmap;if (mIconRect ! null)invalidateView();}private static final String INSTANCE_STATE instance_state;private static final String STATE_ALPHA state_alpha;Overrideprotected Parcelable onSaveInstanceState(){Bundle bundle new Bundle();bundle.putParcelable(INSTANCE_STATE, super.onSaveInstanceState());bundle.putFloat(STATE_ALPHA, mAlpha);return bundle;}Overrideprotected void onRestoreInstanceState(Parcelable state){if (state instanceof Bundle){Bundle bundle (Bundle) state;mAlpha bundle.getFloat(STATE_ALPHA);super.onRestoreInstanceState(bundle.getParcelable(INSTANCE_STATE));} else{super.onRestoreInstanceState(state);}}}
MainActivity
package com.zhy.weixin6.ui;import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;import android.annotation.SuppressLint;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewConfiguration;
import android.view.Window;
import android.widget.SearchView;
import android.widget.Toast;SuppressLint(NewApi)
public class MainActivity extends FragmentActivity implementsOnPageChangeListener, OnClickListener
{private ViewPager mViewPager;private ListFragment mTabs new ArrayListFragment();private FragmentPagerAdapter mAdapter;private String[] mTitles new String[] { First Fragment!,Second Fragment!, Third Fragment!, Fourth Fragment! };private ListChangeColorIconWithTextView mTabIndicator new ArrayListChangeColorIconWithTextView();Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);setOverflowShowingAlways();getActionBar().setDisplayShowHomeEnabled(false);mViewPager (ViewPager) findViewById(R.id.id_viewpager);initDatas();mViewPager.setAdapter(mAdapter);mViewPager.setOnPageChangeListener(this);}private void initDatas(){for (String title : mTitles){TabFragment tabFragment new TabFragment();Bundle args new Bundle();args.putString(title, title);tabFragment.setArguments(args);mTabs.add(tabFragment);}mAdapter new FragmentPagerAdapter(getSupportFragmentManager()){Overridepublic int getCount(){return mTabs.size();}Overridepublic Fragment getItem(int arg0){return mTabs.get(arg0);}};initTabIndicator();}SearchView searchView;Overridepublic boolean onCreateOptionsMenu(Menu menu){getMenuInflater().inflate(R.menu.main, menu);MenuItem searchItem menu.findItem(R.id.action_search); searchView (SearchView) searchItem.getActionView(); return true;}Overridepublic boolean onSearchRequested() {// TODO Auto-generated method stubToast.makeText(getApplicationContext(), searchView.getQuery(), 0).show();return super.onSearchRequested();}private void initTabIndicator(){ChangeColorIconWithTextView one (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_one);ChangeColorIconWithTextView two (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_two);ChangeColorIconWithTextView three (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_three);ChangeColorIconWithTextView four (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_four);mTabIndicator.add(one);mTabIndicator.add(two);mTabIndicator.add(three);mTabIndicator.add(four);one.setOnClickListener(this);two.setOnClickListener(this);three.setOnClickListener(this);four.setOnClickListener(this);one.setIconAlpha(1.0f);}Overridepublic void onPageSelected(int arg0){}Overridepublic void onPageScrolled(int position, float positionOffset,int positionOffsetPixels){// Log.e(TAG, position position , positionOffset // positionOffset);if (positionOffset 0){ChangeColorIconWithTextView left mTabIndicator.get(position);ChangeColorIconWithTextView right mTabIndicator.get(position 1);left.setIconAlpha(1 - positionOffset);right.setIconAlpha(positionOffset);}}Overridepublic void onPageScrollStateChanged(int state){}Overridepublic 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;case R.id.id_indicator_three:mTabIndicator.get(2).setIconAlpha(1.0f);mViewPager.setCurrentItem(2, false);break;case R.id.id_indicator_four:mTabIndicator.get(3).setIconAlpha(1.0f);mViewPager.setCurrentItem(3, false);break;}}/*** 重置其他的Tab*/private void resetOtherTabs(){for (int i 0; i mTabIndicator.size(); i){mTabIndicator.get(i).setIconAlpha(0);}}Overridepublic boolean onMenuOpened(int featureId, Menu menu){if (featureId Window.FEATURE_ACTION_BAR menu ! null){if (menu.getClass().getSimpleName().equals(MenuBuilder)){try{Method m menu.getClass().getDeclaredMethod(setOptionalIconsVisible, Boolean.TYPE);m.setAccessible(true);m.invoke(menu, true);} catch (Exception e){}}}return super.onMenuOpened(featureId, menu);}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();}}}
Activity里面代码虽然没什么注释但是很简单哈就是初始化Fragment得到我们的适配器然后设置给ViewPager initTabIndicator我们初始化我们的自定义控件以及加上了点击事件 唯一一个需要指出的就是 我们在onPageScrolled中动态的获取position以及positionOffset然后拿到左右两个View设置positionOffset
两个反射的方法是控制Actionbar的图标的和点击menu按键显示的
TabFragment
package com.zhy.weixin6.ui; import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView; public class TabFragment extends Fragment
{ private String mTitle Default; public TabFragment() { } Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (getArguments() ! null) { mTitle getArguments().getString(title); } TextView textView new TextView(getActivity()); textView.setTextSize(20); textView.setBackgroundColor(Color.parseColor(#ffffffff)); textView.setGravity(Gravity.CENTER); textView.setText(mTitle); return textView; }
}
menu.xml文件
menu xmlns:androidhttp://schemas.android.com/apk/res/android itemandroid:idid/action_searchandroid:actionViewClassandroid.widget.SearchViewandroid:icondrawable/actionbar_search_iconandroid:showAsActionifRoom|collapseActionViewandroid:titlestring/action_search/itemandroid:idid/action_group_chatandroid:icondrawable/ofm_group_chat_iconandroid:titlestring/action_group_chat/itemandroid:idid/action_add_friendandroid:icondrawable/ofm_add_iconandroid:titlestring/action_add_friend/itemandroid:idid/action_scanandroid:icondrawable/ofm_qrcode_iconandroid:titlestring/action_scan/itemandroid:idid/action_feedandroid:icondrawable/ofm_feedback_iconandroid:titlestring/action_feed//menu
源码下载
源码下载
参考链接
Android 高仿微信6.0主界面 带你玩转切换图标变色 - Hongyang - 博客频道 - CSDN.NET http://blog.csdn.net/lmj623565791/article/details/41087219
