"Android" experiment 4 use of color, string resources

Lab Report

Course Name		Mobile Internet development based on Android platform		Date of experiment	March 25
Name of the experimental project		Experiment 4 use of color, string resources		Location of the experiment	S30010
Type of experiment		-Verification Type √ design type-comprehensive type		Hours	2
The purpose and requirements of the experiment (the knowledge points which are involved in this experiment and are required to be mastered)
Objective: Learn how to use color and string resources in Android. Understand how size and layout resources are used in Android. Requirements: Use color resources for activity and view in project; Use string resources and understand the reference mechanism of string resources; Set the dimensions for the view components in Android; Use layout resources to place components on the interface at the specified location.
second, the experimental environment (the hardware equipment and related software used in this experiment)
(1) PC Machine (2) Operating system: Windows XP (3) Software: Eclipse, jdk1.6,android Sdk,adt
Third, the contents and steps of the experiment
1. Create a project 2. Modifying string resources Open the/res/values/strings.xml file. Click the Add button to add a string, enter the string name and value A new project contains three existing strings 3. New color resource color.xml 4. using resource colors and string resources Color: R.COLOR.RED_GB String: R.STRINGS.S Open the Res/layout/activity_main.xml file and modify the code as follows <relativelayout 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: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=". Mainactivity " > <textview Android:layout_width="Wrap_content" android:layout_height="Wrap_content" android:text="@string/hello_world" android:textcolor="@color/red_bg" android:textsize="30SP" android:text_color="@values/color/" /> </RelativeLayout>
Four, the experimental results (the experimental source program list and operating results or experimental conclusions, experimental design drawings)
Code: Activity_main: <?xml version= "1.0" encoding= "Utf-8"?> <relativelayout xmlns:android= "Http://schemas.android.com/apk/res/android" Android:layout_width= "Fill_parent" android:layout_height= "Fill_parent" android:background= "#fff0f0f0" > <linearlayout Android:layout_width= "Fill_parent" android:layout_height= "Wrap_content" android:orientation= "Vertical" android:paddingbottom= "10.0dip" > <linearlayout Android:layout_width= "Fill_parent" android:layout_height= "Fill_parent" android:layout_weight= "0.0" Android:focusable= "true" Android:focusableintouchmode= "true" android:orientation= "Vertical" > <framelayout Android:layout_width= "Wrap_content" android:layout_height= "Wrap_content" Android:layout_gravity= "Center_horizontal" android:layout_margintop= "22.0dip" > <imageview Android:layout_width= "57.0dip" android:layout_height= "57.0dip" android:layout_gravity= "Center" Android:adjustviewbounds= "true" android:contentdescription= "@null" Android:scaletype= "Centercrop" android:src= "@drawable/setting_head_icon"/> <imageview Android:layout_width= "66.0dip" android:layout_height= "66.0dip" android:layout_gravity= "Center" Android:adjustviewbounds= "true" android:contentdescription= "@null" Android:scaletype= "Centercrop" android:visibility= "Visible"/> </FrameLayout> <!--android:src= "@drawable/setting_head_border"- <edittext Android:id= "@+id/usernametext" Android:layout_width= "Fill_parent" android:layout_height= "50.0dip" android:layout_marginleft= "12.0dip" android:layout_marginright= "12.0dip" android:layout_margintop= "15.0dip" android:background= "@color/input_color" Android:drawablepadding= "15.0dip" Android:ems= "10" android:hint= "@string/username" Android:inputtype= "Text" Android:paddingbottom= "2.0dip" android:paddingleft= "15.0dip" android:paddingright= "15.0dip" android:paddingtop= "2.0dip" Android:singleline= "true" Android:textcolorhint= "#ff999999" Android:textsize= "16.0sp"/> <edittext Android:id= "@+id/passwdtext" Android:layout_width= "Fill_parent" android:layout_height= "50.0dip" Android:layout_marginbottom= "20.0dip" android:layout_marginleft= "12.0dip" android:layout_marginright= "12.0dip" android:layout_margintop= "20.0dip" android:background= "@color/input_color" Android:drawablepadding= "15.0dip" Android:ems= "10" android:hint= "@string/passwd" Android:inputtype= "Textpassword" Android:paddingbottom= "2.0dip" android:paddingleft= "15.0dip" android:paddingright= "15.0dip" android:paddingtop= "2.0dip" Android:singleline= "true" Android:textcolorhint= "#ff999999" Android:textsize= "16.0sp"/> <button Android:id= "@+id/bnlogin" Android:layout_width= "Fill_parent" android:layout_height= "50.0dip" android:layout_marginleft= "12.0dip" android:layout_marginright= "12.0dip" android:background= "@color/login_button" Android:singleline= "true" android:text= "@string/login" Android:textcolor= "#ffffffff" Android:textsize= "18.0sp"/> </LinearLayout> </LinearLayout> </RelativeLayout> Colors: <?xml version="1.0" encoding="Utf-8"?> <resources> <color name="Input_color"> #fff </color> <color name="Login_button"> #3980F4 </color> </resources> Strings: <?xml version= "1.0" encoding= "Utf-8"?> <resources> <string name= "App_name" >shiyan4</string> <string name= "Action_settings" >Settings</string> <string name= "Hello_world" >hello world!</string> <string name= "Login" > Login </string> <string name= "UserName" > Please enter your account </string> <string name= "passwd" > Please enter your password </string> </resources> Run Result: ()
Five, Experimental summary (analysis of the results of the experiment, experience and improvement of experimental ideas)
The experiment learned how to reference various resources, such as strings, pictures, colors, and so on, and then to change the color just in the XML file can be changed uniformly, so that later maintenance more convenient.
Experimental reviews
Experimental results			Guide Teacher Signature: Date

"Android" experiment 4 use of color, string resources