拨号器的实现

来源：互联网发布：seo编辑工具编辑：程序博客网时间：2024/06/04 17:45

package cn.edu.fosu.dialer;import android.net.Uri;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//找到按钮Button bt=(Button) findViewById(R.id.bt_call);//给按钮注册监听器bt.setOnClickListener(new MyListener());}    class MyListener implements OnClickListener{@Overridepublic void onClick(View v) {//找到文本输入框EditText ex=(EditText) findViewById(R.id.ex_call);   //获取文本输入框的值String phone=ex.getText().toString();//创建意图Intent intent=new Intent();//调用打电话的功能intent.setAction(Intent.ACTION_CALL);//拨打的电话号码intent.setData(Uri.parse("tel:"+phone));//开启activitystartActivity(intent);}        }@Overridepublic 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;}}

activity_main.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="vertical"    tools:context=".MainActivity" ><!-- 显示“请输入号码” -->    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/dialer" /><!-- 显示输入的文本 -->    <EditText        android:id="@+id/ex_call"        android:layout_width="match_parent"        android:layout_height="wrap_content" /><!-- 拨号按钮 -->    <Button         android:id="@+id/bt_call"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/bt_call"/></LinearLayout>

strings.xml:

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="app_name">电话拨号器</string>    <string name="action_settings">Settings</string>    <string name="hello_world">Hello world!</string>    <string name="dialer">请输入号码：</string>    <string name="bt_call">拨号</string></resources>

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="cn.edu.fosu.dialer"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="17" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="cn.edu.fosu.dialer.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

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