根据SeekBar的进度更改TextView颜色 [英] Changing the TextView color depending on the progress of a SeekBar

问题描述

我试图改变 TextView 的颜色取决于 SeekBar 的进度如下： / p>

• 0-25％ - >绿色


• 25％-50％ - >黄色等...

当我使用以下代码时， TextView t再次显示该值。

我非常感谢任何帮助！

代码：

  onProgressChanged（SeekBar seekBar，int progress，
 boolean fromUser）
 {
 textView.setText（String.valueOf（progress +％））; 
 if（progress> = 25&& progress< 50）
 textView.setTextColor（R.color.Yellow）; 
 else if（progress> = 50&& progress< 75）
 textView.setTextColor（R.color.Orange）; 
 else if（progress> = 75&&& progress< = 100）
 textView.setTextColor（R.color.Red）; 
 else 
 textView.setTextColor（R.color.Green）; 
} 
  

---

 < TextView 
 android：id =@ + id / eT
 android：layout_width =wrap_content
 android：layout_height =wrap_content
 android：text =@ string / tvProgress
 android：textColor =@ color / Green
 android：textSize =25dp
 android：textStyle =bold
 android：layout_gravity =center
 android：layout_marginBottom =5dp
 /> 
  

解决方案

我没有得到什么问题，我工作，它对我来说非常好。我已经附上了出来的屏幕截图。请检查。

main.xml

 < ScrollView android：layout_width =wrap_content
 android：layout_height =wrap_content> 
 
< RelativeLayout android：layout_width =wrap_content
 android：layout_height =wrap_content> 
 
 
 
< TextView android：id =@ + id / aksharTextView
 android：layout_width =wrap_content
 android：layout_height = wrap_content
 android：text =afadjklhfg
 android：paddingTop =10dip
 android：layout_below =@ + id / arialTextView/& 
 
 
 
< SeekBar android：layout_width =fill_parent
 android：layout_height =wrap_content
 android：layout_below =@ id / aksharTextView 
 android：padding =10dip
 android：id =@ + id / seekbar/> 
< / RelativeLayout> 
 
 
< / ScrollView> 
  

onCreate

  seekBar.setOnSeekBarChangeListener（new OnSeekBarChangeListener（）{
 
 public void onStopTrackingTouch arg0）{
 // TODO自动生成的方法存根
 
} 
 
 public void onStartTrackingTouch（SeekBar arg0）{
 // TODO自动生成方法stub 
 
} 
 
 public void onProgressChanged（SeekBar arg0，int progress，boolean arg2）{
 aksharTextView.setText（progress +）; 
 if（progress> = 25&& progress< 50）
 aksharTextView.setTextColor（Color.BLUE）; 
 else if（progress> = 50&& progress< 
 aksharTextView.setTextColor（Color.WHITE）; 
 else if（progress> = 75&& progress< = 100）
 aksharTextView.setTextColor（Color.GREEN）; 
 else 
 aksharTextView.setTextColor（Color.RED）; 
} 
}）; 
  

输出画面

I am trying to change the color of the TextView depending on the SeekBar's progress as following:

• 0-25% -> green
• 25%-50% -> yellow and so on...

When I using the following code, the TextView doesn't show the value anymore.

I would greatly appreciate any help!

Code:

public void onProgressChanged(SeekBar seekBar, int progress,
        boolean fromUser) 
{   
    textView.setText(String.valueOf(progress + "%"));
    if(progress >= 25 && progress < 50)
        textView.setTextColor(R.color.Yellow);
    else if(progress >= 50 && progress < 75)
        textView.setTextColor(R.color.Orange);
    else if(progress >= 75 && progress <= 100)
        textView.setTextColor(R.color.Red);
    else 
        textView.setTextColor(R.color.Green);
}    

---

XML:

<TextView
    android:id="@+id/eT"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/tvProgress"
    android:textColor="@color/Green"
    android:textSize="25dp"
    android:textStyle="bold"
    android:layout_gravity="center"
    android:layout_marginBottom="5dp"
    />

解决方案

I don't get what the problem is, but I worked on it and it works very fine for me. I have attached the screen shots of the out put also. Please check.

main.xml

 <ScrollView  android:layout_width="wrap_content"
     android:layout_height="wrap_content">

     <RelativeLayout  android:layout_width="wrap_content"
         android:layout_height="wrap_content">



            <TextView  android:id="@+id/aksharTextView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="afadjklhfg"
                android:paddingTop="10dip"
                android:layout_below="@+id/arialTextView"/>



            <SeekBar  android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_below="@id/aksharTextView"
                android:padding="10dip"
                android:id="@+id/seekbar"/>
     </RelativeLayout>


 </ScrollView>

onCreate()

 seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

            public void onStopTrackingTouch(SeekBar arg0) {
                // TODO Auto-generated method stub

            }

            public void onStartTrackingTouch(SeekBar arg0) {
                // TODO Auto-generated method stub

            }

            public void onProgressChanged(SeekBar arg0, int progress, boolean arg2) {
                aksharTextView.setText(progress+"");
                if(progress >= 25 && progress < 50)
                    aksharTextView.setTextColor(Color.BLUE);
                else if(progress >= 50 && progress < 75)
                    aksharTextView.setTextColor(Color.WHITE);
                else if(progress >= 75 && progress <= 100)
                    aksharTextView.setTextColor(Color.GREEN);
                else 
                    aksharTextView.setTextColor(Color.RED);
            }
        });

OutPut Screens

这篇关于根据SeekBar的进度更改TextView颜色的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！