Android学习笔记35——ProgressBar进度控件详解

前言

ProgressBar是一个常见的用户交互控件，比如下载的进度条、加载进度条等等。

ProgressBar的属性

style="?android:attr/progressBarStyleHorizontal"    水平进度条（可以显示刻度，常用）style="?android:attr/progressBarStyleSmall"     小进度条style="?android:attr/progressBarStyleLarge"    大进度条style="?android:attr/progressBarStyleInverse"    默认进度条，不设置样式默认显示这种style="?android:attr/progressBarStyleLargeInverse"     不断跳跃、旋转动画的大进度条style="?android:attr/progressBarStyleSmallInverse"      不断跳跃、旋转动画的小进度条android:max="100"    设置进度条最大值，一般设置100android:progress="30"   设置第一进度值android:secondaryProgress="50"   设置第二进度值ndroid:visibility="gone"     设置是否显示，默认显示

ProgressBar的实例

1.xml文件

<?xml version="1.0" encoding="utf-8"?>

2.Activity里面的代码

package com.yb.testdemo;import android.annotation.SuppressLint;import android.os.Bundle;import android.support.annotation.Nullable;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.ProgressBar;@SuppressLint("Registered")public class ProgressBarActivity extends AppCompatActivity {    private Button btnCircular,btnLoad;    private ProgressBar progressBarCircular,progressBarLoad;    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_progressbar);        btnCircular = findViewById(R.id.btn_circular);        btnLoad = findViewById(R.id.btn_load);        progressBarCircular = findViewById(R.id.progress_circular);        progressBarLoad = findViewById(R.id.progress_load);        // 圆形进度条        btnCircular.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if (progressBarCircular.getVisibility() == View.GONE){                    progressBarCircular.setVisibility(View.VISIBLE);                }else {                    progressBarCircular.setVisibility(View.GONE);                }            }        });        // 加载进度条        btnLoad.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                int progress = progressBarLoad.getProgress();                progress = progress + 10;                progressBarLoad.setProgress(progress);            }        });    }}

3.实现的效果

ProgressBar开源库的推荐

圆形进度条 https://github.com/MyLifeMyTravel/CircleProgress
SaleProgressView-仿淘宝淘抢购进度条 https://github.com/zhlucky/SaleProgressView
双向选择的进度条 https://github.com/yujinzhao123/DoubleHeadedDragonBar
等级进度条 https://github.com/shonnybing/SpeedProgressBar

前言

ProgressBar的属性

ProgressBar的实例

ProgressBar开源库的推荐

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