前言
本文主要给大家介绍了关于android条纹进度条(调整view宽度仿进度条)的相关内容，分享出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧
方法如下：
美工同学指定了一个进度条样式
进度条样式
这斑斓的进度条，如果要自己画实在是劳民伤财。于是请美工切了一张素材。
素材样例
如果用shape或者.9图片不太好处理这个条纹。转变思路，放置2张图片。一张作为背景（底，bottom），一张作为进度条图片（cover）。
进度改变时，改变上面图片的宽度。
这就要求上面的图片是圆角的。自定义imageview，调用canvas.clippath来切割画布。
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public class roundcornerimageview extends android.support.v7.widget.appcompatimageview { private float mradius = 18; private path mclippath = new path(); private rectf mrect = new rectf(); public roundcornerimageview(context context) { super(context); } public roundcornerimageview(context context, attributeset attrs) { super(context, attrs); } public roundcornerimageview(context context, attributeset attrs, int defstyle) { super(context, attrs, defstyle); } public void setradiusdp(float dp) { mradius = dp2px(dp, getresources()); postinvalidate(); } public void setradiuspx(int px) { mradius = px; postinvalidate(); } @override protected void ondraw(canvas canvas) { mrect.set(0, 0, this.getwidth(), this.getheight()); mclippath.reset(); // remember to reset path mclippath.addroundrect(mrect, mradius, mradius, path.direction.cw); canvas.clippath(mclippath); super.ondraw(canvas); } private float dp2px(float value, resources resources) { return typedvalue.applydimension(typedvalue.complex_unit_dip, value, resources.getdisplaymetrics()); }} |
每次绘制都切割一次圆角。记得调用path.reset()方法。
回到我们要的进度条。布局文件中放置好层叠的图片。
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<relativelayoutandroid:id="@+id/progress_layout"android:layout_width="190dp"android:layout_height="10dp"android:layout_centerinparent="true"><imageview android:id="@+id/p_bot_iv" android:layout_width="190dp" android:layout_height="10dp" android:src="@drawable/shape_round_corner_bottom" /><com.rustfisher.view.roundcornerimageview android:id="@+id/p_cover_iv" android:layout_width="100dp" android:layout_height="10dp" android:scaletype="centercrop" android:src="@drawable/pic_cover_blue_white" /></relativelayout> |
需要在代码中动态地改变cover的宽度；dialog中提供如下方法改变layoutparams
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public void updatepercent(int percent) {mpercent = percent;mpercenttv.settext(string.format(locale.china, "%2d%%", mpercent));float percentfloat = mpercent / 100.0f;final int ivwidth = mbotiv.getwidth();relativelayout.layoutparams lp = (relativelayout.layoutparams) mprogressiv.getlayoutparams();int marginend = (int) ((1 - percentfloat) * ivwidth);lp.width = ivwidth - marginend;mprogressiv.setlayoutparams(lp);mprogressiv.postinvalidate();} |
显示出dialog并传入进度，就可以看到效果了。
这只是实现效果的一种方法，如果有更多的想法，欢迎和我交流~
相关代码请参阅：
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package com.rust.aboutview.activity;import android.os.bundle;import android.os.handler;import android.os.looper;import android.support.annotation.nullable;import android.support.v4.app.dialogfragment;import android.support.v7.app.appcompatactivity;import android.view.view;import com.rust.aboutview.r;import com.rust.aboutview.widget.roundcornerprogressdialog;import com.rustfisher.view.roundcornerimageview;import butterknife.bindview;import butterknife.butterknife;import butterknife.onclick;/** * 圆角图片示例 * created by rust on 2018/5/23. */public class roundcorneractivity extends appcompatactivity implements view.onclicklistener { @bindview(r.id.r_iv_1) roundcornerimageview mriv1; @bindview(r.id.r_iv_2) roundcornerimageview mriv2; @bindview(r.id.r_iv_3) roundcornerimageview mriv3; @bindview(r.id.r_iv_4) roundcornerimageview mriv4; private handler mmainhandler = new handler(looper.getmainlooper()); private roundcornerprogressdialog mroundcornerprogressdialog; private progressthread mprogressthread; @override protected void oncreate(@nullable bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.act_round_corner); initui(); } private void initui() { butterknife.bind(this); mriv1.setradiusdp(12); mriv2.setradiusdp(23); mriv3.setradiuspx(40); mriv4.setradiuspx(200); } @onclick(r.id.pop_dialog_btn) @override public void onclick(view v) { switch (v.getid()) { case r.id.pop_dialog_btn: poproundprogressdialog(); break; } } private void poproundprogressdialog() { if (null == mroundcornerprogressdialog) { mroundcornerprogressdialog = new roundcornerprogressdialog(); } mroundcornerprogressdialog.setstyle(dialogfragment.style_normal, r.style.apptranslucentorigin); mroundcornerprogressdialog.show(getsupportfragmentmanager(), roundcornerprogressdialog.f_tag); if (null != mprogressthread) { mprogressthread.interrupt(); try { mprogressthread.join(400); } catch (interruptedexception e) { e.printstacktrace(); } mprogressthread = null; } mprogressthread = new progressthread(); mprogressthread.start(); } private class progressthread extends thread { private int progress = 0; @override public void run() { super.run(); while (!isinterrupted()) { progress++; try { thread.sleep(50); } catch (interruptedexception e) { e.printstacktrace(); break; } if (progress > 100) { progress = 0; } final int p = progress; mmainhandler.post(new runnable() { @override public void run() { mroundcornerprogressdialog.updatepercent(p); } }); } } }} |
总结
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原文链接：https://www.jianshu.com/p/f7e151c2cb57
