Android—进度条

layout文件：

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:paddingBottom="@dimen/activity_vertical_margin"
 7     android:paddingLeft="@dimen/activity_horizontal_margin"
 8     android:paddingRight="@dimen/activity_horizontal_margin"
 9     android:paddingTop="@dimen/activity_vertical_margin"
10     tools:context="com.hanqi.testapp2.TestActivity4"
11     android:orientation="vertical">
12 
13     <ProgressBar
14         android:layout_width="match_parent"
15         android:layout_height="wrap_content"
16         style="?android:attr/progressBarStyleHorizontal"
17         android:progress="0"
18         android:secondaryProgress="0"
19         android:max="80"
20         android:id="@+id/pb_1"/>
21     <ProgressBar
22         android:layout_width="match_parent"
23         android:layout_height="wrap_content"
24         style="?android:attr/progressBarStyleLarge"
25         android:id="@+id/pb_2"/>
26     <SeekBar
27         android:layout_width="match_parent"
28         android:layout_height="wrap_content"
29         android:progress="0"
30         android:max="80"
31         android:secondaryProgress="0"
32         android:id="@+id/se_1"/>
33     <RatingBar
34         android:layout_width="wrap_content"
35         android:layout_height="wrap_content"
36         android:numStars="5"
37         android:rating="3.5"
38         android:isIndicator="true"/>
39 </LinearLayout>

java类代码：

 1 package com.hanqi.testapp2;
 2 
 3 import android.app.AlertDialog;
 4 import android.os.Bundle;
 5 import android.support.v7.app.AppCompatActivity;
 6 import android.util.Log;
 7 import android.view.View;
 8 import android.widget.ProgressBar;
 9 import android.widget.SeekBar;
10 
11 public class TestActivity4 extends AppCompatActivity {
12 
13     SeekBar se_1;
14     ProgressBar pb_1;
15     ProgressBar pb_2;
16     @Override
17     protected void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.activity_test4);
20         se_1 = (SeekBar)findViewById(R.id.se_1);
21         pb_1 = (ProgressBar)findViewById(R.id.pb_1);
22         pb_2 = (ProgressBar)findViewById(R.id.pb_2);
23 
24         AlertDialog alertDialog = new AlertDialog.Builder(this).create();
25 
26         se_1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
27             //进度变化触发
28             @Override
29             public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
30                 //设置进度条1的进度值
31                 pb_1.setProgress(progress);
32                 //判断是否达到最大值
33                 if(progress ==se_1.getMax())
34                 {
35                     pb_2.setVisibility(View.INVISIBLE);//不显示但位置还保留
36                 }
37                 else
38                 {
39                     pb_2.setVisibility(View.VISIBLE);
40                 }
41                 //只要progress变化就会触发
42                 //Toast.makeText(TestActivity4.this, "当前进度 = "+progress, Toast.LENGTH_SHORT).show();
43             }
44 
45             @Override
46             public void onStartTrackingTouch(SeekBar seekBar) {
47                 Log.e("TAG","进度条开始拖动");
48             }
49 
50             @Override
51             public void onStopTrackingTouch(SeekBar seekBar) {
52                 Log.e("TAG","进度条停止拖动");
53             }
54         });
55     }
56 }

效果为：