View（视图）———进度条

一.分类

1.不可拖动  ProgressBar

2.可拖动

1>SeekBar

2>RatingBar

二.ProgressBar

1.style  样式

1>水平

?android:attr/progressBarStyleHorizontal;

2>旋转

1-默认样式

2-设置大小

?android:attr/progressBarStyleLarge;

2.水平进度条

1>progress  当前进度

2>max  最大进度

3>secondaryProgress   第二进度:颜色不同。

 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="16dp"
 7     android:paddingLeft="16dp"
 8     android:paddingRight="16dp"
 9     android:paddingTop="16dp"
10     tools:context="com.example.wang.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="40"
18         android:secondaryProgress="50"
19         android:max="80"
20         android:id="@+id/pb_1"/>
21
22     <ProgressBar
23         android:layout_width="match_parent"
24         android:layout_height="wrap_content"
25         style="?android:attr/progressBarStyleLarge"
26         android:id="@+id/pb_2"/>
27 <LinearLayout>

ProgressBar

 1 package com.example.wang.testapp2;
 2
 3 import android.app.Activity;
 4 import android.app.AlertDialog;
 5 import android.support.v7.app.AppCompatActivity;
 6 import android.os.Bundle;
 7 import android.util.Log;
 8 import android.view.View;
 9 import android.widget.ImageView;
10 import android.widget.ProgressBar;
11 import android.widget.SeekBar;
12 import android.widget.Toast;
13
14 public class TestActivity4 extends Activity {
15
16     ProgressBar pb_1;
17     ProgressBar pb_2;
18
19     @Override
20     protected void onCreate(Bundle savedInstanceState) {
21         super.onCreate(savedInstanceState);
22         setContentView(R.layout.activity_test4);
23
24         pb_1=(ProgressBar)findViewById(R.id.pb_1);
25         pb_2=(ProgressBar)findViewById(R.id.pb_2);
26
27
28     }
29 }

ProgressBar

三.SeekBar

1.常用属性

1>progress  当前进度

2>max  最大进度

3>secondaryProgress   第二进度:颜色不同。

2.监听器

1>SeekBar.OnSeekBarChangeListener()

1-void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)  进度变化时触发

2- void onStartTrackingTouch(SeekBar seekBar)  开始拖动时触发

3-void onStopTrackingTouch(SeekBar seekBar)  结束拖动时触发

 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="16dp"
 7     android:paddingLeft="16dp"
 8     android:paddingRight="16dp"
 9     android:paddingTop="16dp"
10     tools:context="com.example.wang.testapp2.TestActivity4"
11     android:orientation="vertical">
12
13     <SeekBar
14         android:layout_width="match_parent"
15         android:layout_height="wrap_content"
16         android:progress="40"
17         android:max="80"
18         android:secondaryProgress="50"
19         android:id="@+id/se_1"/>
20
21
22 </LinearLayout>

SeekBar

 1 package com.example.wang.testapp2;
 2
 3 import android.app.Activity;
 4 import android.app.AlertDialog;
 5 import android.support.v7.app.AppCompatActivity;
 6 import android.os.Bundle;
 7 import android.util.Log;
 8 import android.view.View;
 9 import android.widget.ImageView;
10 import android.widget.ProgressBar;
11 import android.widget.SeekBar;
12 import android.widget.Toast;
13
14 public class TestActivity4 extends Activity {
15
16
17     SeekBar se_1;
18
19
20     @Override
21     protected void onCreate(Bundle savedInstanceState) {
22         super.onCreate(savedInstanceState);
23         setContentView(R.layout.activity_test4);
24
25         se_1=(SeekBar)findViewById(R.id.se_1);
26
27         //AlertDialog ad= new AlertDialog.Builder(this).create();
28
29         se_1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
30
31             //进度变化触发
32             @Override
33             public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
34
35                 //只要progress变化就被触发
36
37                 Toast.makeText(TestActivity4.this, "当前进度="+progress, Toast.LENGTH_SHORT).show();
38             }
39
40             @Override
41             public void onStartTrackingTouch(SeekBar seekBar) {
42
43                 Log.e("TAG", "进度条开始拖动");
44             }
45
46             @Override
47             public void onStopTrackingTouch(SeekBar seekBar) {
48
49                 Log.e("TAG", "进度条停止拖动");
50
51             }
52         });
53
54     }
55 }

SeekBar

四.RatingBar

1.numStars  显示星星的总数

2.rating   当前值

3.isIndicator   是否不允许人修改

 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="16dp"
 7     android:paddingLeft="16dp"
 8     android:paddingRight="16dp"
 9     android:paddingTop="16dp"
10     tools:context="com.example.wang.testapp2.TestActivity4"
11     android:orientation="vertical">
12
13
14     <RatingBar
15         android:layout_width="wrap_content"
16         android:layout_height="wrap_content"
17         android:numStars="7"
18         android:rating="3.5"/>
19         <!--//android:isIndicator="true"-->
20
21 </LinearLayout>

RatingBar

小结：