安卓开发简易电话拨号器

来源：互联网发布：php 验证日期格式编辑：程序博客网时间：2024/04/28 08:02

我是基于安卓4.2.2开发的，下面是我写的MainActivity.java代码：

package com.example.phone;import android.support.v7.app.ActionBarActivity;import android.support.v4.app.Fragment;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.Button;import android.widget.EditText;public class MainActivity extends ActionBarActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);if (savedInstanceState == null) {getSupportFragmentManager().beginTransaction().add(R.id.container, new PlaceholderFragment()).commit();}}@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;}@Overridepublic 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);                        final EditText numberText=(EditText) rootView.findViewById(R.id.number);            Button button=(Button)rootView.findViewById(R.id.button);                        button.setOnClickListener(new OnClickListener()            {@Overridepublic void onClick(View v) {String number=numberText.getText().toString();Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+number));startActivity(intent);// TODO Auto-generated method stub}                        });            return rootView;        }}}

布局文件我就不贴出来了，需要注意的是项目清单文件（AndroidManifest.xml )中需要加入perimission: <uses-permission android:name="android.permission.CALL_PHONE"/>.我是安卓初学者，希望对和我一样的初学者有所帮助。

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