Android中使用顏色資源的完成調(diào)色板項(xiàng)目的代碼清單

1、Android中使用顏色資源的完成調(diào)色板項(xiàng)目的代碼清單范美英（北京信息職業(yè)技術(shù)學(xué)院）摘 要：Android應(yīng)用開發(fā)中經(jīng)常會(huì)使用到顏色資源用來實(shí)現(xiàn)UI的效果，本文詳細(xì)羅列了使用顏色資源完成調(diào)色板項(xiàng)目的代碼清單。關(guān)鍵詞： Android；顏色資源；調(diào)色板；代碼清單1 MainActivity.java類的代碼package com.book.thirdtestcolor;import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.view.View;import

2、android.widget.EditText;import android.widget.LinearLayout;public class MainActivity extends Activity EditText edt_a,edt_r,edt_g,edt_b;LinearLayout color_res;Overrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);edt_a=(Ed

3、itText) this.findViewById(R.id.edt_alpha);edt_r=(EditText) this.findViewById(R.id.edt_r);edt_g=(EditText) this.findViewById(R.id.edt_g);edt_b=(EditText) this.findViewById(R.id.edt_b);color_res=(LinearLayout) this.findViewById(R.id.color_res);public void clickOK(View v)int alpha=Integer.parseInt(edt_

4、a.getText().toString();int red=Integer.parseInt(edt_r.getText().toString();int green=Integer.parseInt(edt_g.getText().toString();int blue=Integer.parseInt(edt_b.getText().toString();if(alpha>255|alpha<0)edt_a.getText().clear();edt_a.requestFocus();elseif(red>255|red<0)edt_r.getText().cle

5、ar();edt_r.requestFocus();elseif(green>255|green<0)edt_g.getText().clear();edt_g.requestFocus();elseif(blue>255|blue<0)edt_b.getText().clear();edt_b.requestFocus();elseint color=Color.argb(alpha, red, green, blue);color_res.setBackgroundColor(color);2 res/layout/activity_main.xml的代碼清單<

6、;LinearLayout xmlns:android=" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <EditText android:id="+id/edt_alpha" android:layout_width="match_parent" android:layout_height="wrap

7、_content" android:ems="10" android:hint="請輸入透明度值(0255)" android:inputType="number" > <requestFocus /> </EditText> <EditText android:id="+id/edt_r" android:layout_width="match_parent" android:layout_height="wrap_content&quo

8、t; android:hint="請輸入Red值(0255)" android:ems="10" android:inputType="number" /> <EditText android:id="+id/edt_g" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10" android:hint="請輸入

9、Green值(0255)" android:inputType="number" /> <EditText android:id="+id/edt_b" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="請輸入Blue值(0255)" android:ems="10" android:inputType="number&q

10、uot; /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center"> <Button android:id="+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" a

11、ndroid:text="確定" android:onClick="clickOK" /> </LinearLayout> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="調(diào)色結(jié)果：" android:textAppearance="?android:attr/textAppearanceLarge" /&g

12、t; <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:id="+id/color_res" android:orientation="horizontal" > </LinearLayout> </LinearLayout>3 res/menu/activity_main.xml的代碼清單<menu xmlns:android=" > <item android:id="+id/menu_settings"