首页 > 代码库 > 用SeekBar做的Android颜色调色器
用SeekBar做的Android颜色调色器
1、界面布局xml代码：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="当前值是：#000000" />
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="20px"
android:width="100px"
android:text="test" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="红：" />
<SeekBar
android:id="@+id/seekBar1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:max="255"
android:padding="10px"
android:progress="00" />
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="0"
android:ems="10" >
<requestFocus />
</EditText>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="绿" />
<SeekBar
android:id="@+id/seekBar2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="0"
android:layout_weight="1" />
<EditText
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="00"
android:ems="10" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="蓝" />
<SeekBar
android:id="@+id/seekBar3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="0"
android:layout_weight="1" />
<EditText
android:id="@+id/editText3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="00"
android:ems="10" />
</LinearLayout>
</LinearLayout>
2、java代码：
package com.jwy;
import android.os.Bundle;
import android.R.integer;
import android.R.string;
import android.app.Activity;
import android.graphics.Color;
import android.view.Menu;
import android.widget.EditText;
import android.widget.SeekBar;
import android.widget.Toast;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
public class MainActivity extends Activity {
private TextView textView;
private SeekBar seekBar1;
private SeekBar seekBar2;
private SeekBar seekBar3;
private EditText editText1;
private EditText editText2;
private EditText editText3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView)findViewById(R.id.textView1);
seekBar1 =(SeekBar)findViewById(R.id.seekBar1);
seekBar2 =(SeekBar)findViewById(R.id.seekBar2);
seekBar3 =(SeekBar)findViewById(R.id.seekBar3);
editText1=(EditText)findViewById(R.id.editText1);
editText2=(EditText)findViewById(R.id.editText2);
editText3=(EditText)findViewById(R.id.editText3);
seekBar1.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
{
@Override
public void onStopTrackingTouch(SeekBar seekBar)
{
// TODO Auto-generated method stub
//Toast.makeText(MainActivity.this, "结束华滑动", Toast.LENGTH_SHORT).show();
}
@Override
public void onStartTrackingTouch(SeekBar seekBar)
{
// TODO Auto-generated method stub
//Toast.makeText(MainActivity.this, "开始滑动", Toast.LENGTH_SHORT).show();
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser)
{
// TODO Auto-generated method stub
//Toast.makeText(MainActivity.this, "当前值是："+progress, Toast.LENGTH_SHORT).show();
String str = String.format("%1$02x", progress);
editText1.setText(str);
doWork();
}
});
seekBar2.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
{
@Override
public void onStopTrackingTouch(SeekBar seekBar)
{
// TODO Auto-generated method stub
}
@Override
public void onStartTrackingTouch(SeekBar seekBar)
{
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser)
{
// TODO Auto-generated method stub
//editText2.setText(Integer.toHexString(progress));
editText2.setText(String.format("%1$02x", progress));
doWork();
}
});
seekBar3.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
{
@Override
public void onStopTrackingTouch(SeekBar seekBar)
{
// TODO Auto-generated method stub
}
@Override
public void onStartTrackingTouch(SeekBar seekBar)
{
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser)
{
// TODO Auto-generated method stub
//editText3.setText(Integer.toHexString(progress));
editText3.setText(String.format("%1$02x", progress));
doWork();
}
});
}
private void doWork()
{
String sTmp = editText1.getText().toString()+ editText2.getText().toString() + editText3.getText().toString();
textView.setText("当前值是：#" + sTmp);
TextView tView = (TextView)findViewById(R.id.textView5);
tView.setBackgroundColor(Color.parseColor("#"+sTmp));
//tView.setBackgroundColor(Color.parseColor("#ff00"));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
用SeekBar做的Android颜色调色器
声明：以上内容来自用户投稿及互联网公开渠道收集整理发布，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任，若内容有误或涉及侵权可进行投诉： 投诉/举报 工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。