Android—获取view中的一个控件_android 获取view中的控件-优快云博客

本文链接：https://blog.youkuaiyun.com/weiguishan/article/details/47421167

通过创建自定义的FontTextTextView2类，继承自TextView，并设置微软雅黑字体。使用findTextView2方法从XML布局中获取该控件，然后可以通过ftt2.getText()来操作文本。

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<span style="font-size:14px;">
</span>

<span style="font-size:14px;"><?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="400dip"
    android:background="#FFFFFF" >

    <com.insightcode.androidfont.FontTextTextView2
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingBottom="10dip"
        android:gravity="center"
        android:text="华南区"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="#376092" />

    <TextView
        android:id="@+id/tv_cardview_dailyreport_all_achieve"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@id/textView1"
        android:gravity="center"
        android:paddingLeft="30dip"
        android:text="1%"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="#376092"
        android:textSize="25dip" />

</RelativeLayout></span>

比如main.xml中有两个textview，我们要获取其中一个textview2

其实com.insightcode.androidfont.FontTextTextView2是我自己写一个类，继承TextTiew，为了区别和普通TextView，我设置微软雅黑字体，其实没要求就直接继承作为一个类就可以了

<span style="font-size:14px;">package com.insightcode.androidfont;
import com.insightcode.app.BusinessApplication;

import android.content.Context;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.widget.TextView;
/**
 * 文本为汉字，设置微软雅黑，日报的整体跟踪机构名称
 *
 */
public class FontTextTextView2 extends TextView {
    private Context mContext=null;
    Typeface texttypeface=null;

    public FontTextTextView2(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        if(mContext==null){
            this.mContext = context;
        }
        if(texttypeface==null){
            texttypeface = BusinessApplication.texttypeface;
        }
        this.setTypeface(texttypeface);
    }


    public FontTextTextView2(Context context, AttributeSet attrs) {
        super(context, attrs);
        if(mContext==null){
            this.mContext = context;
        }
        if(texttypeface==null){
            texttypeface = BusinessApplication.texttypeface;
        }
        this.setTypeface(texttypeface);
    }


    public FontTextTextView2(Context context) {
        super(context);
        if(mContext==null){
            this.mContext = context;
        }
        if(texttypeface==null){
            texttypeface = BusinessApplication.texttypeface;
        }
        this.setTypeface(texttypeface);
      }
}</span>

然后在activity里面写如下函数

<span style="font-size:14px;">	/**
     * 从当前view中查找TextView子控件
     * 
     * @param group
     * @return
     */
    private FontTextTextView2 findTextView2(ViewGroup group) {
        if (group != null) {
            for (int i = 0, j = group.getChildCount(); i < j; i++) {
                View child = group.getChildAt(i);
                if (child instanceof TextView) {
                    return (FontTextTextView2) child;
                } else if (child instanceof ViewGroup) {
                	FontTextTextView2 result = findTextView2((ViewGroup) child);
                    if (result != null)
                        return result;
                }
            }
        }
        return null;
    }</span>

然后使用以上方法：

FontTextTextView2 ftt2 = findTextView2((ViewGroup)view);

ftt2就是要从xml中获取的控件，可以ftt2.getText()获取文本进行操作

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