android edittext 输入完成监听,android监听edittext输入事件

package com.example.frametest;

import android.app.Activity;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.os.Bundle;

import android.text.Editable;

import android.text.TextWatcher;

import android.view.KeyEvent;

import android.view.Menu;

import android.view.View;

import android.view.inputmethod.EditorInfo;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends Activity {

public final static int ANIM_COUNT = 4;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

// setContentView(new FrameView(this));

setContentView(R.layout.main1);

//

final TextView tv1 = (TextView)findViewById(R.id.monitor_text0);

final TextView tv2 = (TextView)findViewById(R.id.monitor_text1);

final TextView tv3 = (TextView)findViewById(R.id.monitor_text2);

EditText et_monitor = (EditText)findViewById(R.id.monitor_edit_text0);

et_monitor.addTextChangedListener(new TextWatcher() {

@Override

public void onTextChanged(CharSequence str, int start, int before, int count) {

// TODO Auto-generated method stub

//str输入框改变后的字符信息

//start 输入后字符串其实位置

// before 输入后起始光标位置

//一共输入的字符个数

tv1.setText("输入字符串"+str.toString()+"起始光标"+start+"一共输入"+count);

}

@Override

public void beforeTextChanged(CharSequence str, int start, int count,

int after) {

// TODO Auto-generated method stub

//text 输入框中改变前的字符串信息

//start 输入框中改变前的字符串的起始位置

//count 输入框中改变前后的字符串改变数量一般为0

//after 输入框中改变后的字符串与起始位置的偏移量

tv2.setText("输入前字符串 [ " + str.toString() + " ]起始光标 [ " + start + " ]结束偏移量 [" + after + " ]");

}

@Override

public void afterTextChanged(Editable edit) {

// TODO Auto-generated method stub

//edit 输入结束呈现在输入框中的信息

tv3.setText("输入结束后的内容为 [" + edit.toString()+" ] 即将显示在屏幕上");

}

});

}

}

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