1、Android中監聽EditText文本輸入的代碼清單范美英（北京信息職業技術學院）摘 要：Android應用開發中可以使用EditText接收用戶的輸入，本文詳細羅列了監聽EditText中文本輸入的代碼清單。關鍵詞： Android；EditText；監聽輸入；代碼清單1 src/類的代碼package com.zyk.inputlistener;import android.app.Activity;import android.os.Bundle;import android.text.Editable;import android.text.TextWatcher;import an

2、droid.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity EditText edt; Override protected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final int maxLength=this.getResources().getInteger(R.inte

3、ger.maxLength); edt=(EditText) this.findViewById(R.id.edt); edt.addTextChangedListener(new TextWatcher() /文本改變時的事件Overridepublic void onTextChanged(CharSequence s, int start, int before, int count) if(count>=maxLength-2 && count<maxLength)Toast.makeText(getApplicationContext(), "還

4、能輸入" + (maxLength- s.length() + "字符", Toast.LENGTH_SHORT).show(); /文本改變前的事件反映Overridepublic void beforeTextChanged(CharSequence s, int start, int count,int after) Toast.makeText(getApplicationContext(), "您已經輸入"+after+"個字符",Toast.LENGTH_SHORT).show();/文本改變后的事件反映Over

5、ridepublic void afterTextChanged(Editable s) if (s.length() = maxLength) Toast.makeText(getApplicationContext(), "你輸入的字符是"+s.toString(), Toast.LENGTH_LONG).show(); edt.setSelection(0,edt.length(); ); 2<LinearLayout xmlns:android=" android:layout_width="fill_parent" androi

6、d:layout_height="fill_parent" android:orientation="vertical" > <EditText android:id="+id/edt" android:layout_width="match_parent" android:layout_height="wrap_content" android:maxLength="integer/maxLength" android:hint="最多輸入8個字符&q

7、uot; > <requestFocus /> </EditText></LinearLayout><?xml version="1.0" encoding="utf-8"?><resources xmlns:android=" <string name="app_name">InputListener</string> <string name="action_settings">Settings</string> <string name="hello_world">Hello world!</string><item type="integer&q