一、题目
Android 一键拨号
二、环境
AndroidStudio
三、代码实现
此链接为SharedPreference存储电话号码。与一键拨号，可一起使用。
如果不用SharedPreference，就用你存储电话号码的那种方法对应的读取方法来读取电话号码。
package com.example.children;
import android.Manifest;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import java.util.ArrayList;
import java.util.List;
public class YiJianBoHuaActivity extends AppCompatActivity {
private Button btnPhone1;
private Button btnPhone2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_yijianbohua);
btnPhone1 = (Button) findViewById(R.id.btn_call_phone1);
btnPhone2 = (Button) findViewById(R.id.btn_call_phone2);
List<String> permissionList = new ArrayList<>();
if(ContextCompat.checkSelfPermission(YiJianBoHuaActivity.this,Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED){
permissionList.add(Manifest.permission.CALL_PHONE);
}
if(!permissionList.isEmpty()){
String[] permissions = permissionList.toArray(new String[permissionList.size()]);
ActivityCompat.requestPermissions(YiJianBoHuaActivity.this, permissions, 1);
}else{
Call1();
Call2();
}
}
public void Call1(){
btnPhone1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SharedPreferences sp = getSharedPreferences("phone_info",MODE_PRIVATE);
String phone1 = sp.getString("PhoneNumber1","");
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"
+ phone1));
if (ActivityCompat.checkSelfPermission(YiJianBoHuaActivity.this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
return;
}
startActivity(intent);
}
});
}
public void Call2(){
btnPhone2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SharedPreferences sp = getSharedPreferences("phone_info",MODE_PRIVATE);
String phone2 = sp.getString("PhoneNumber2","");
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"
+ phone2));
if (ActivityCompat.checkSelfPermission(YiJianBoHuaActivity.this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
return;
}
startActivity(intent);
}
});
}
/*只有同意打开相关权限才可以开启本程序*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case 1:
if (grantResults.length > 0) {
for (int result : grantResults) {
if (result != PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this, "必须同意所有权限才能使用本程序", Toast.LENGTH_SHORT).show();
finish();
return;
}
}
Call1();
Call2();
} else {
Toast.makeText(this, "发生未知错误", Toast.LENGTH_SHORT).show();
finish();
}
break;
default:
}
}
}
四、实验截图
界面比较丑，多担待。
有问题，欢迎留言交流！