Android实例，美图秀秀透明度拖动，拖动条应用

超、凢脫俗 2023-07-04 08:40 31阅读 0赞

效果如下：  
![!\](https://img-blog.csdnimg.cn/20200209164752177.png?x-oss-process=image/watermark,type\_ZmFuZ3poZW5naGVpdGk,shadow\_10,text\_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzc4Njc1Ng==,size\_16,color\_FFFFFF,t\_70)][https_img-blog.csdnimg.cn_20200209164752177.png_x-oss-process_image_watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzc4Njc1Ng_size_16_color_FFFFFF_t_70]

**activity\_main.xml**

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context="com.mingrisoft.seekbar.MainActivity">
    
        <ImageView
            android:id="@+id/image1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:scaleType="fitXY"
            android:src="@drawable/t12"
            />
    
        <SeekBar
            android:id="@+id/seekbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="255"
            android:progress="255"/>
    
        <ImageView
            android:id="@+id/image2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:scaleType="fitXY"
            android:src="@drawable/tt"
            />
    
    </LinearLayout>

**MainActivity.java文件**

package com.mingrisoft.seekbar;
    
    import android.support.v7.app.ActionBarActivity;
    import android.os.Bundle;
    import android.widget.ImageView;
    import android.widget.SeekBar;
    
    public class MainActivity extends ActionBarActivity { 
        private SeekBar seekbar;
        private ImageView image;
        @Override
        protected void onCreate(Bundle savedInstanceState) { 
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            image= (ImageView) findViewById(R.id.image1);
            seekbar= (SeekBar) findViewById(R.id.seekbar);
            seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { 
                @Override
                public void onProgressChanged(SeekBar seekBar, int i, boolean b) { 
                    image.setImageAlpha(i);
    
                }
    
                @Override
                public void onStartTrackingTouch(SeekBar seekBar) { 
    
                }
    
                @Override
                public void onStopTrackingTouch(SeekBar seekBar) { 
    
                }
            });
    
        }
    }

[https_img-blog.csdnimg.cn_20200209164752177.png_x-oss-process_image_watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzc4Njc1Ng_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200209164858507.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzc4Njc1Ng==,size_16,color_FFFFFF,t_70