移动平台应用开发（源码、安装包、文档）

package com.userms.ui; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.provider.Telephony; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.text.TextUtils; import android.view.View; import android.widget.Toast; import com.userms.R; import com.userms.adapter.UserAdapter; import com.userms.model.UserBean; import com.userms.utils.DbManager; import com.userms.utils.CacheUtil; import com.userms.utils.Utils; import java.util.ArrayList; import java.util.Collections; import java.util.List; /** * 主页面 */ public class MainActivity extends AppCompatActivity implements View.OnClickListener { DbManager dbManager; RecyclerView listUser; UserAdapter userAdapter; private Context mContext; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mContext = this; setContentView(R.layout.activity_main); findViewById(R.id.btn_add).setOnClickListener(this); findViewById(R.id.btn_delete).setOnClickListener(this); findViewById(R.id.btn_groupsend).setOnClickListener(this); findViewById(R.id.btn_clear).setOnClickListener(this); listUser = findViewById(R.id.list_user); listUser.setLayoutManager(new LinearLayoutManager(this)); dbManager = new DbManager(this); boolean init = CacheUtil.isInit(this); //如果是第一次初始化 添加用户数据 if (!init) { ArrayList<UserBean> users = CacheUtil.makeUsers(); for (UserBean user : users) { dbManager.addUser(user); } CacheUtil.setInit(this, true); } List<UserBean> users = dbManager.getUserList(); userAdapter = new UserAdapter(this, users); listUser.setAdapter(userAdapter); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.btn_add: Intent intent = new Intent(this, AddActivity.class); startActivityForResult(intent, 0); break; case R.id.btn_delete: List<UserBean> selectUser = userAdapter.getSelectUser(); for (int i = 0; i < selectUser.size(); i++) { dbManager.deleteUser(selectUser.get(i)); } List<UserBean> userList2 = dbManager.getUserList(); userAdapter = new UserAdapter(this, userList2); listUser.setAdapter(userAdapter); Utils.toastShort(mContext, "删除成功!"); break; case R.id.btn_groupsend: List<UserBean> selectUser3 = userAdapter.getSelectUser(); if (selectUser3 == null || selectUser3.isEmpty()) { Utils.toastShort(mContext, "请先选择用户!"); } else { List<String> phoneList = new ArrayList<>(); for (int i = 0; i < selectUser3.size(); i++) { phoneList.add(selectUser3.get(i).getPhone()); } if (phoneList.size() > 0) { sendSms(this, "", phoneList); } } break; case R.id.btn_clear: userAdapter.initUser(); break; } } /** * 发短信 * * @param context * @param text * @param numbers */ public void sendSms(Context context, String text, List<String> numbers) { String numbersStr = ""; String symbol = "Samsung".equalsIgnoreCase(Build.MANUFACTURER) ? "," : ";"; if (numbers != null && !numbers.isEmpty()) { numbersStr = TextUtils.join(symbol, numbers); } Uri uri = Uri.parse("smsto:" + numbersStr); Intent intent = new Intent(); intent.setData(uri); intent.putExtra("sms_body", text); intent.setAction(Intent.ACTION_SENDTO); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { String defaultSmsPackageName = Telephony.Sms.getDefaultSmsPackage(context); if (defaultSmsPackageName != null) { intent.setPackage(defaultSmsPackageName); } } if (!(context instanceof AppCompatActivity)) { intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); } try { context.startActivity(intent); } catch (Exception e) { e.printStackTrace(); Utils.toastShort(mContext, e.getMessage()); } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (resultCode == RESULT_OK) { List<UserBean> userList = dbManager.getUserList(); userAdapter = new UserAdapter(this, userList); listUser.setAdapter(userAdapter); } } }