安卓学习-界面-布局-GridLayout

GridLayout网络布局，类似html里的table，可以设置行数、列数、跨行单元格

GridLayout XML属性

属性	方法	说明
android:alignmentMode	setAlignmentMode GridLayout.ALIGN_BOUNDS GridLayout.ALIGN_MARGINS	没效果 设置该布局的对其方式 alignBounds或alignMargins
android:columnCount	setColumnCount	列数量
android:columnOrderPreserved	setColumnOrderPreserved	没效果 是否保留列序列号
android:rowCount	setRowCount	行数量
android:rowOrderPreserved	setRowOrderPreserved	没效果 是否保留行序列号
android:useDefaultMargins	setUseDefaultMargins	没效果 是否使用默认的页边距

GridLayout  的 LayoutParams

属性	方法	说明
android:layout_column		在第几列
android:layout_columnSpan		横跨几列
android:layout_row		在第几行
android:layout_rowSpan		横跨几行
android:layout_gravity		对其方式

计算机例子

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" 

    >

    <GridLayout
        android:id="@+id/root"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:columnCount="4"
        android:rowCount="6" >

        <EditText
            android:id="@+id/editText1"
            android:layout_width="match_parent"
            android:layout_columnSpan="4"
            android:layout_gravity="fill"
            >

        </EditText>

        <Button
            android:id="@+id/button1"
            android:layout_width="match_parent"
            android:layout_columnSpan="4"
            android:text="清除" 
            />

    </GridLayout>

</LinearLayout>

MainActivity.java

package com.example.dddd;

import android.app.Activity;
import android.graphics.Point;
import android.os.Bundle;
import android.view.Gravity;
import android.widget.Button;
import android.widget.GridLayout;

public class MainActivity extends Activity {


    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        GridLayout gl=(GridLayout)findViewById(R.id.root);
        String[] aa=new String[]{
                "1","2","3","+",
                "4","5","6","-",
                "7","8","9","*",
                ".","0","=","/"};
        
        Point size = new Point();  
        
        getWindowManager().getDefaultDisplay().getSize(size);  

        for(int i=0;i<aa.length;i++){
            GridLayout.Spec column=GridLayout.spec(i%4);
            GridLayout.Spec row=GridLayout.spec(i/4+2);
            GridLayout.LayoutParams params=new GridLayout.LayoutParams(row, column);
            //params.setGravity(Gravity.FILL);
        
            Button btn=new Button(this);
            btn.setText(aa[i]);
            btn.setWidth((int) (size.x * 0.25));
            btn.setHeight((int) (size.x * 0.25));
            gl.addView(btn,params);

        }

    }
}