实例非常简单,意在体验Android的Intent,用户权限。
Intent 见 http://blog.csdn.net/zengmingen/article/details/49586045
用户权限 见 http://blog.csdn.net/zengmingen/article/details/49586569
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MainActivity.java
package com.example.callPhone; import android.app.Activity; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.view.View; import android.widget.EditText; public class MainActivity extends Activity { private EditText et; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); et=(EditText) findViewById(R.id.phoneNumber); } public void callPhone(View v){ String phoneNumber=et.getText().toString(); //拨打电话是系统应用,谷歌没有提供直接的打电话API,需要通过意图调用 //创建意图对象 Intent intent=new Intent(); //我们需要告诉系统,我们的动作:我要打电话 intent.setAction(Intent.ACTION_CALL); //把电话号码告诉系统的打电话应用。这是android系统设计思想,组件调用 intent.setData(Uri.parse("tel:" + phoneNumber)); startActivity(intent); //现实中,打电话要钱,所以需要增加打电话权限 } }
<uses-permission android:name="android.permission.CALL_PHONE"/>
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.callPhone" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" /> <uses-permission android:name="android.permission.CALL_PHONE"/> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="com.example.callPhone.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>
<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="match_parent" android:orientation="vertical" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/inputNumber" /> <EditText android:id="@+id/phoneNumber" android:layout_width="match_parent" android:layout_height="wrap_content" android:inputType="phone" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/callPhone" android:onClick="callPhone" /> </LinearLayout>
代码下载:
http://download.csdn.net/detail/zengmingen/9172881