Learn android<relativelayout relative layout from scratch. 16 .>

the relative layout manager refers to the placement of a reference to a different control, which can be controlled to place the component on the top, bottom, left, and right of a specified reference component, which can be done directly through the properties provided by each component. the basic use of each method is described below

No.	Property name	The corresponding rule constants	Describe
1	Android:layout_below	Relativelayout.below	Placed below the specified component
2	Android:layout_toleftof	Relativelayout.left_of	Placed on the left side of the specified component
3	Android:layout_torightof	Relativelayout.right_of	Placed on the right side of the specified component
4	Android:layout_aligntop	Relativelayout.align_top	Align to the specified component as a reference
5	Android:layout_alignbottom	Relativelayout.align_bottom	Align with the specified component for reference
6	Android:layout_alignleft	Relativelayout.align_left	Left-justified as a reference for the specified component
7	Android:layout_alignright	Relativelayout.align_right	Right-justified with reference to the specified component

<span style= "FONT-SIZE:18PX;" ><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:paddi ngbottom= "@dimen/activity_vertical_margin" android:paddingleft= "@dimen/activity_horizontal_margin" Android: paddingright= "@dimen/activity_horizontal_margin" android:paddingtop= "@dimen/activity_vertical_margin" Android: Textalignment= "center" tools:context= ". Mainactivity "> <edittext android:id=" @+id/edittext1 "android:layout_width=" Wrap_content "an droid:layout_height= "Wrap_content" android:layout_alignparentright= "true" android:layout_alignparenttop= "Tru E "android:ems=" "/> <edittext android:id=" @+id/edittext2 "android:layout_width=" Wrap_cont      Ent "android:layout_height=" wrap_content "android:layout_alignright=" @+id/edittext1 "  android:layout_below= "@+id/edittext1" android:ems= "ten" android:inputtype= "Textpassword" > <re Questfocus/> </EditText> <textview android:id= "@+id/textview1" android:layout_width= "wrap _content "android:layout_height=" wrap_content "android:layout_alignbottom=" @+id/edittext1 "Android:la Yout_alignparentleft= "true" android:text= "account"/> <textview android:id= "@+id/textview2" Andro Id:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:layout_alignbottom= "@+id/editTex T2 "android:layout_alignparentleft=" true "android:text=" password "android:textalignment=" center "/> & Lt Button android:id= "@+id/button1" android:layout_width= "wrap_content" android:layout_height= "Wrap_cont Ent "android:layout_below=" @+id/edittext2 "android:layout_marginleft=" 23DP "android:layout_margintop= "36DP" Android: layout_torightof= "@+id/textview2" android:text= "login"/> <textview android:id= "@+id/textview3" Android:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:layout_alignbottom= "@ +id/button1 "android:layout_marginleft=" 14DP "android:layout_torightof=" @+id/button1 "Android:autolin k= "web" android:linksclickable= "true" android:text= "Forgot password" android:textappearance= "? Android:attr/texta Ppearancesmall "android:textsize=" 10DP "/></relativelayout></span>

The use of relative layout is the main layout, it is more convenient than other methods, can be visualized directly drag-and-drop interface.
..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ... .. ....... There is no beauty in the dividing line ... ..... ..... ..... ..... ..... .......-.....-......................
using the dynamic table layout implementation is the same as before, not often used here no longer repeat, interested readers can try for themselves. There are several ways to use this.

1	Public Relativelayout.layoutparams (int w, int h)	Structure	Specify the width and height of the relativelayout layout
2	public void addRule (int verb, int anchor)	Ordinary	Add a specified parameter rule
3	Public int[] GetRules ()	Ordinary	Get all parameter rules for a component

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