Android的开始之TextField控件

android:inputType:

"text"

Normal text keyboard.

"textEmailAddress"

Normal text keyboard with the @ character.

"textUri"

Normal text keyboard with the / character.

"number"

Basic number keypad.

"phone"

Phone-style keypad.

android:inputType="textPassword" //设置键盘类型，，不会校验

代码：

package com.example.android;

import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.os.Build;

public class MainActivity extends ActionBarActivity {
private Button button;
private EditText editText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_main);
button=(Button)this.findViewById(R.id.button1);
editText=(EditText)this.findViewById(R.id.editText1);
button.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String value=editText.getText().toString().trim();
//输入错误的提示
if(value==null||value.equals("")){
editText.setError("请输入用户名：");
return;

}
//Toast.makeText(MainActivity.this, "-->>"+value, 1).show();
}
});
editText.setOnKeyListener(new OnKeyListener() {

@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {//捕获回车键，--确认
// TODO Auto-generated method stub
if(keyCode==KeyEvent.KEYCODE_ENTER){
Toast.makeText(MainActivity.this, "按下回车键", 1).show();
}
return false;
}
});

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}

/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {

public PlaceholderFragment() {
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}

}