Android 实现打电话

一、注册

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

二、activity_main文件：

<RelativeLayout 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"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/callbtn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="132" />

</RelativeLayout>

三、Activity文件

package com.example.call_phone;

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

public class MainActivity extends Activity {

    Button callbtn;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        callbtn = (Button) findViewById(R.id.callbtn);
        callbtn.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent = new Intent(
                        "android.intent.action.CALL",
                        Uri.parse("tel:"+callbtn.getText().toString())
                        );
                startActivity(intent);
            }
        });
    }


}