打电话

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

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package com.example.test2;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 CallPhoneActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_call_phone);    }    public void click(View v){        EditText et_num= (EditText) findViewById(R.id.num);        String num=et_num.getText().toString();        Intent intent=new Intent();        intent.setAction(Intent.ACTION_CALL);        intent.setData(Uri.parse("tel:"+num));//tel:必须加        startActivity(intent);    }}