安卓笔记---对话框中输入，判断是否符合号码规范，是--跳转拨号盘，否--提示号码不正确

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.chris.android_4_4.MainActivity$PlaceholderFragment" >

<Button
//id改成TelBtn
android:id="@+id/TelBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/editText1"
android:layout_centerHorizontal="true"
android:text="Button" />

<EditText
//id改成TelNum
android:id="@+id/TelNum"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:ems="10" >

<requestFocus />
</EditText>

</RelativeLayout>

package com.example.chris.telnum;

import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.telephony.PhoneNumberFormattingTextWatcher;
import android.telephony.PhoneNumberUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//这里是编写的部分，调用TelBtn
Button bCall = (Button)findViewById(R.id.TelBtn);
//对按钮监听
bCall.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
EditText telnum = (EditText)findViewById(R.id.TelNum);
String telNum = telnum.getText().toString();
//判断输入框中的内容是否符合号码规则，符合则跳转拨号界面并填充， 不符合提示号码不正确
if(PhoneNumberUtils.isGlobalPhoneNumber(telNum)){
Intent i = new Intent(Intent.ACTION_DIAL, Uri.parse("tel://"+telNum));
MainActivity.this.startActivity(i);
}else{
Toast.makeText(MainActivity.this,"号码不正确",5000).show();
}
}
}
);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.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();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}
}