首页 > 代码库 > 【Android快速入门2】拨号器的实现
【Android快速入门2】拨号器的实现
拨号器是个很简单的布局,用来做Android的入门最好不过。
本程序给予Android API19编译实现,因此是新版布局。不习惯的请注意。
截图下次我有空补上。
1、Java主程序:
public class MainActivity extends ActionBarActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (savedInstanceState == null) { getSupportFragmentManager().beginTransaction() .add(R.id.container, new PlaceholderFragment()) .commit(); } } public void call(View v){ System.out.println("拨打电话。"); //读取号码 EditText editText=(EditText) findViewById(R.id.eal); String string=editText.getText().toString(); //拨号 Intent intent=new Intent(); intent.setAction(Intent.ACTION_CALL); intent.setData(Uri.parse("tel:"+string)); startActivity(intent); } @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; } }}
2、主清单
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.caller" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="19" /> <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.caller.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>
3、布局清单主Activity
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.caller.MainActivity" tools:ignore="MergeRootFrame" />
4、布局文件
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"><TextView android:id="@+id/cal" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/cal" /><EditText android:id="@+id/eal" android:inputType="number" android:layout_below="@+id/cal" android:layout_width="match_parent" android:layout_height="wrap_content" /><Button android:id="@+id/bal" android:onClick="call" android:layout_below="@+id/eal" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/bal" /></RelativeLayout>
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