Android简单拨号

package com.example.phonecall;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button btn=(Button)findViewById(R.id.Call);
        btn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                makeCall();
            }

            private void makeCall() {
                // TODO Auto-generated method stub
                Log.i("Make call", "");

                  Intent phoneIntent = new Intent(Intent.ACTION_CALL);
                  phoneIntent.setData(Uri.parse("tel:10086"));

                  try {
                      startActivity(phoneIntent);
                      finish();
                      Log.i("Finished making a call...", "");
                   } catch (android.content.ActivityNotFoundException ex) {
                      Toast.makeText(MainActivity.this,
                      "Call faild, please try again later.", Toast.LENGTH_SHORT).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.main, menu);
        return true;
    }

}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:orientation="vertical" >

   <Button android:id="@+id/Call"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="@string/make_call"/>

</LinearLayout>

Strings.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">Phonecall</string>
    <string name="action_settings">Settings</string>
    <string name="hello_world">Hello world!</string>
    <string name="make_call">Call </string>

</resources>

AndroidManifest.xml中写入权限:

<uses-permission android:name="android.permission.CALL_PHONE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE" />

run: