GridLayout使用Demo(兼容4.0以下版本)

Library Project including compatibility GridLayout. This can be used by an Android project to provide access to GridLayout on applications running on API 7+. There is technically no source, but the src folder is necessary to ensure that the build system works. The content is actually located in libs/android-support-v7-gridlayout.jar. The accompanying resources must also be included in the application. USAGE: Make sure you use <android.support.v7.widget.GridLayout> in your layouts instead of <GridLayout>. Same for <android.support.v7.widget.Space> instead of <Space>. Additionally, all of GridLayout's attributes should be put in the namespace of the app, as those attributes have been redefined in the library so that it can run on older platforms that don't offer those attributes in their namespace. To know which attributes need the application namespace, look at the two declare-styleable declared in res/values/attrs.xml For instance: <?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.GridLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" <==== the namespace used for the library project android:layout_width="match_parent" android:layout_height="match_parent" app:columnCount="6" > <===== notice how we're using app:columnCount here, not android:columnCount! <Button android:id="@+id/button1" app:layout_column="1" <=== again, note the app: namespace app:layout_columnSpan="2" app:layout_gravity="left" app:layout_row="1" android:text="Button" /> <CheckBox android:id="@+id/checkBox1" app:layout_column="4" app:layout_gravity="left" app:layout_row="2" android:text="CheckBox" /> <Button android:id="@+id/button2" app:layout_column="5" app:layout_gravity="left" app:layout_row="3" android:text="Button" /> <android.support.v7.widget.Space <=== space widgets also need the full support package path android:layout_width="21dp" <=== use the android namespace for width, height etc -- only use app: for the grid layout library's new resources android:layout_height="1dp" app:layout_column="0" app:layout_gravity="fill_horizontal" app:layout_row="0" />