android linearlayout 自定义,android 自定义LinearLayout

接着上一篇，本篇玩一下自定义LinearLayout，直接上代码：

1. attr.xml

2.继承LinearLayout重新定义一个：

package com.test.customviewtest;

import android.content.Context;

import android.content.res.TypedArray;

import android.util.AttributeSet;

import android.widget.EditText;

import android.widget.LinearLayout;

import android.widget.TextView;

public class MyLinearLayout extends LinearLayout {

public MyLinearLayout(Context context, AttributeSet attrs) {

super(context, attrs);

int resouceId = -1;

TypedArray MyTypeArray = context.obtainStyledAttributes(attrs,

R.styleable.MyLinearLayout);

TextView tv = new TextView(context);

EditText et = new EditText(context);

int N = MyTypeArray.getIndexCount();// N=2

for (int i = 0; i < N; i++) {

int attr = MyTypeArray.getIndex(i);

switch (attr) {

case R.styleable.MyLinearLayout_Text:

resouceId = MyTypeArray.getResourceId(

R.styleable.MyLinearLayout_Text, 0);

tv.setText(resouceId > 0 ? MyTypeArray.getResources().getText(

resouceId) : MyTypeArray

.getString(R.styleable.MyLinearLayout_Text));

break;

case R.styleable.MyLinearLayout_Orientation:

resouceId = MyTypeArray.getInt(

R.styleable.MyLinearLayout_Orientation, 0);

this.setOrientation(resouceId == 1 ? LinearLayout.HORIZONTAL

: LinearLayout.VERTICAL);

break;

}

}

addView(tv);

addView(et);

MyTypeArray.recycle();

}

}

3.在activity_main.xml 布局中引用自定义LinearLayout：

4. MainActivity.java

package com.test.customviewtest;

import android.app.Activity;

import android.os.Bundle;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

}

内容很简单，就不作详细介绍了，看一下demo基本就会搞了！！