android常用控件（二）

ToggleButton（点击开关）
Switch（滑动开关）
SeekBar（进度条）
RatingBar（评分控件）

用这4个控件来做一个简单运用
效果图是这样的

xml代码

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <LinearLayout        android:layout_width="410dp"        android:layout_height="500dp">        <ImageView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:id="@+id/iv_work_image"            />    LinearLayout>    <SeekBar        android:id="@+id/sb_work_seek"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_gravity="center" />    <LinearLayout        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:orientation="horizontal"        >    <ToggleButton        android:layout_width="60dp"        android:layout_height="60dp"        android:id="@+id/tb_work_open1"        android:onClick="open1" />    <Switch        android:layout_width="60dp"        android:layout_height="60dp"        android:layout_gravity="center"        android:id="@+id/tb_work_open2"        android:onClick="open2"        android:checked="true"/>        <RatingBar            android:id="@+id/rb_work_ratingBar"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center" />    LinearLayout>LinearLayout>

java代码

package com.example.a_02.a_06;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.os.Environment;import android.support.annotation.Nullable;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.ImageView;import android.widget.RatingBar;import android.widget.SeekBar;import android.widget.Switch;import android.widget.TextView;import android.widget.Toast;import android.widget.ToggleButton;import java.io.File;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;/** * Created by ming on 2017/6/11 0011. */public class work extends AppCompatActivity {    private File[] files;    private ImageView iv_work_image;    private Bitmap bitmap;    private int qq=1;    private ToggleButton tb_work_open1;    private Switch tb_work_open2;    private SeekBar sb_work_seek;    private RatingBar rb_work_ratingBar;    private RatingBar rb;    private Map count = new HashMap();    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.work);        iv_work_image = (ImageView) findViewById(R.id.iv_work_image);        tb_work_open1 = (ToggleButton) findViewById(R.id.tb_work_open1);        tb_work_open2 = (Switch) findViewById(R.id.tb_work_open2);        sb_work_seek = (SeekBar) findViewById(R.id.sb_work_seek);        rb_work_ratingBar = (RatingBar) findViewById(R.id.rb_work_ratingBar);                                                                    //内存卡激活        if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){            //获取内存卡路劲            String ss=Environment.getExternalStorageDirectory().getAbsolutePath();//获取内存卡绝对路径            File file=new File(ss+"/images");//获取文件夹路径            files=file.listFiles(); //获取文件夹下所有的文件//            使用bitmap位图            bitmap = BitmapFactory.decodeFile(files[qq].getAbsolutePath());            iv_work_image.setImageBitmap(bitmap);            //SeekBar监听            sb_work_seek.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {                @Override                public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {                    seekBar.setMax(255);                    iv_work_image.setImageAlpha(progress);                    //Toast.makeText(work.this, progress+"", Toast.LENGTH_SHORT).show();                }                @Override                public void onStartTrackingTouch(SeekBar seekBar) {                    //Toast.makeText(work.this, "触摸", Toast.LENGTH_SHORT).show();                }                @Override                public void onStopTrackingTouch(SeekBar seekBar) {                    //Toast.makeText(work.this, "放开", Toast.LENGTH_SHORT).show();                }            });            //RatingBar监听            rb_work_ratingBar.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {                @Override                public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {                    count.put(qq,rating);                    Toast.makeText(work.this, count.size()+"kkkkk", Toast.LENGTH_SHORT).show();                }            });        }    }    public void open1(View view) {        if (tb_work_open1.isChecked() == false) {            qq=qq+1;            if(qq>=files.length){                qq=1;            }            bitmap = BitmapFactory.decodeFile(files[qq].getAbsolutePath());            iv_work_image.setImageBitmap(bitmap);        } else {            qq=qq+1;            if(qq>=files.length){                qq=1;            }//            Toast.makeText(work.this, qq+"777", Toast.LENGTH_SHORT).show();            bitmap = BitmapFactory.decodeFile(files[qq].getAbsolutePath());            iv_work_image.setImageBitmap(bitmap);        }        if(count.get(qq)==null){        String ss="3";        count.put(qq, Float.parseFloat(ss));    }        rb_work_ratingBar.setRating(count.get(qq));    }    public void open2(View view){        if(tb_work_open2.isChecked()==true){            bitmap = BitmapFactory.decodeFile(files[qq].getAbsolutePath());            iv_work_image.setImageBitmap(bitmap);            //Toast.makeText(this,"打开" , Toast.LENGTH_SHORT).show();        }else{            bitmap=null;            iv_work_image.setImageBitmap(bitmap);           // Toast.makeText(this,"关闭" , Toast.LENGTH_SHORT).show();        }    }}

左边开关换图，右边是关闭看图
星星则是评分
上面的进度条则可以调图片透明度

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