Android 生成颜色器

Posted 2020-08-20 BigBoy520

<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" >

    
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <LinearLayout
            android:layout_weight="1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
                
            <TextView 
                android:layout_width="wrap_content"
                android:gravity="center_vertical"
                android:layout_height="match_parent"
                android:layout_marginLeft="10dp"
                android:textSize="20sp"
                android:text="请输入行:"
                />

            <EditText
                android:id="@+id/editText1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:ems="10"
                android:hint="请输入数字！"
                android:numeric="decimal" />
            
        </LinearLayout>
        
        <LinearLayout
            android:layout_weight="1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
            
            <TextView 
                android:layout_width="wrap_content"
                android:gravity="center_vertical"
                android:layout_height="match_parent"
                android:layout_marginLeft="10dp"
                android:textSize="20sp"
                android:text="请输入列:"
                />

            <EditText
                android:id="@+id/editText2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:ems="10"
                android:hint="请输入数字！"
                android:numeric="decimal">

                <requestFocus />
            </EditText>
                
        </LinearLayout>
        
        <LinearLayout 
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" 
            >
            
            <Button 
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/button1"
                android:text="一键自动生成表格"
                />
            
        </LinearLayout>
        
    </LinearLayout>


    <TableLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent" 
        android:id="@+id/table1">

        
    </TableLayout>

</LinearLayout>

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import android.widget.Toast;


public class MainActivity extends Activity {
    private final int WC = ViewGroup.LayoutParams.WRAP_CONTENT;    
    private final int MP = ViewGroup.LayoutParams.MATCH_PARENT;  
    private EditText row;
    private EditText column;
    private Button bt1;
    private TableLayout tableLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //获取控件Button
        bt1=(Button) findViewById(R.id.button1);
        //获取文本输入框控件
        row=(EditText) findViewById(R.id.editText1);
        column=(EditText) findViewById(R.id.editText2);
        
        //给button按钮绑定单击事件
        bt1.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                //Color[] colorBlocks= new Color[4096];
                //int row_int=Integer.parseInt(row.getText().toString());
                //int col_int=Integer.parseInt(column.getText().toString());
                
                
                 //获取控件tableLayout     
                tableLayout = (TableLayout)findViewById(R.id.table1); 
                //清除表格所有行
                tableLayout.removeAllViews();
                //全部列自动填充空白处     
                tableLayout.setStretchAllColumns(true);    
                //生成X行，Y列的表格     
               
                int theLength = 64;
                
                
                for(int i=0;i<theLength;i++)    
                {    
                    TableRow tableRow=new TableRow(MainActivity.this);    
                    //生成颜色
                    for(int j=0;j<theLength;j++)    
                    {    
                        int result = i*theLength +(j+1)-1;//0~4095
                        int red = result / 256 ;
                        int green = (result-red*256) / 16;
                        int blue = result-red*256 - green*16;
                        
                        //tv用于显示     
                        TextView tv=new TextView(MainActivity.this);
                        //Button bt=new Button(MainActivity.this);
                        
                        
                        tv.setText("-");   
                        tv.setBackgroundColor( Color.rgb(red*16, green*16,  blue*16) );
                        
                        //Color.rgb(red*16-1, green*16-1,  blue*16-1)
                        //tv.setBackgroundResource(35434);
                        tableRow.addView(tv);    
                    }    
                    //新建的TableRow添加到TableLayout
             
                    tableLayout.addView(tableRow, new TableLayout.LayoutParams(MP, WC,1)); 
                }
                
                
            }
        });
        
        
    }  

}

 效果呢，博客就不展示了。可以自己试试。黄沙百战穿金甲，不破楼兰终不还