BroadCastReciver(广播接收者)

BroadCastReciver

基础代码

activity发出广播
broadcastresciver

作业

LoginActivity
RegisterActivity
MySQLiteHelper
BroadcastReceiver

基础代码

activity发出广播

package com.example.app12;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    private Button buttonId;

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


        buttonId = (Button) findViewById(R.id.button_id);

        buttonId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction("com.zrx.1708");
                intent.putExtra("pig","你家的猪跑了");
                sendBroadcast(intent);
            }
        });


    }
}

broadcastresciver

package com.example.app12;

import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.util.Log;

public class MyReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals("com.zrx.1708")) {
            AlertDialog.Builder builder = new AlertDialog.Builder(context);
            builder.setTitle(intent.getStringExtra("pig"));
            AlertDialog dialog = builder.create();
            builder.setPositiveButton("找找去", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                }
            });
            builder.setNegativeButton("不找了", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                }
            });
//            dialog.show();
            Log.i("TAG", "onReceive: 不找了");
        }
    }

}

作业

LoginActivity

package com.example.practice1;

import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.example.practice1.sqliteHelper.MySQLiteHelper;

public class MainActivity extends AppCompatActivity {

    private EditText editextLoginPhone;
    private EditText editextLoginPassword;
    private Button buttonLogin;
    private Button buttonRegister;

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

        editextLoginPhone = (EditText) findViewById(R.id.editext_login_phone);
        editextLoginPassword = (EditText) findViewById(R.id.editext_login_password);
        buttonLogin = (Button) findViewById(R.id.button_login);
        buttonRegister = (Button) findViewById(R.id.button_register);

        MySQLiteHelper mySQLiteHelper = new MySQLiteHelper(this, "person.db", null, 1);
        Share.db = mySQLiteHelper.getReadableDatabase();

        buttonRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, RegisterActivity.class);
                startActivity(intent);
            }
        });

        buttonLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Cursor cursor = Share.db.rawQuery("select * from users", new String[]{});
                if (cursor != null){
                    while (cursor.moveToNext()){
                        String phone = cursor.getString(cursor.getColumnIndex("phone"));
                        String password = cursor.getString(cursor.getColumnIndex("password"));
                        if (phone.equals(editextLoginPhone.getText().toString()) && password.equals(editextLoginPassword.getText().toString())){
                            Toast.makeText(MainActivity.this, "登陆成功", Toast.LENGTH_SHORT).show();
                        }else {
                            Toast.makeText(MainActivity.this, "登陆失败", Toast.LENGTH_SHORT).show();
                        }
                    }
                }
                cursor.close();
            }
        });

    }
}

RegisterActivity

package com.example.practice1;

import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.example.practice1.sqliteHelper.MySQLiteHelper;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class RegisterActivity extends AppCompatActivity {

    private EditText editextRegisterPhone;
    private EditText editextRegisterCode;
    private Button buttonCode;
    private EditText editextRegisterPassword;
    private Button buttonRegisterSubmit;

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

        MySQLiteHelper mySQLiteHelper = new MySQLiteHelper(this, "person.db", null, 1);
        Share.db = mySQLiteHelper.getReadableDatabase();

        editextRegisterPhone = (EditText) findViewById(R.id.editext_register_phone);
        editextRegisterCode = (EditText) findViewById(R.id.editext_register_code);
        buttonCode = (Button) findViewById(R.id.button_code);
        editextRegisterPassword = (EditText) findViewById(R.id.editext_register_password);
        buttonRegisterSubmit = (Button) findViewById(R.id.button_register_submit);

       editextRegisterPhone.setOnFocusChangeListener(new View.OnFocusChangeListener() {
           @Override
           public void onFocusChange(View v, boolean hasFocus) {
               if (editextRegisterPhone.getText().toString() != null && !hasFocus){
                   buttonCode.setClickable(true);
                   buttonRegisterSubmit.setClickable(true);
               }else if (editextRegisterPhone == null && !hasFocus){
                   Toast.makeText(RegisterActivity.this, "Phone不能为空", Toast.LENGTH_SHORT).show();
               }
           }
       });

       buttonCode.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {
               int floor = (int) Math.floor(Math.random() * 10);
               String sql = "select * from code";
               Cursor cursor = Share.db.rawQuery(sql, new String[]{});
               if (cursor != null){
                   cursor.moveToPosition(floor);
                   String codes = cursor.getString(cursor.getColumnIndex("codes"));
                   Intent intent = new Intent();
                   intent.putExtra("codes",codes);
                   intent.setAction("com.tooth.1708");
                   sendBroadcast(intent);
                   editextRegisterCode.setText(codes);
               }
               cursor.close();
           }
       });

       buttonRegisterSubmit.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {

               Cursor cursor = Share.db.rawQuery("select * from code", new String[]{});
               if (cursor != null){
                   while(cursor.moveToNext()){
                       String codes = cursor.getString(cursor.getColumnIndex("codes"));
                       if (codes.equals(editextRegisterCode.getText().toString())){
                           Pattern compile = Pattern.compile("[\\w]{6,16}");
                           Matcher matcher = compile.matcher(editextRegisterPassword.getText().toString());
                           if (matcher.matches()){
                               Toast.makeText(RegisterActivity.this, "密码格式正确", Toast.LENGTH_SHORT).show();
                               Share.db.execSQL("insert into users values(?,?)",new Object[]{editextRegisterPhone.getText().toString(),editextRegisterPassword.getText().toString()});
                               Intent intent = new Intent(RegisterActivity.this,MainActivity.class);
                               startActivity(intent);
                           }else {
                               Toast.makeText(RegisterActivity.this, "密码格式不正确", Toast.LENGTH_SHORT).show();
                           }
                       }
                   }
               }
               cursor.close();


           }
       });

    }
}

MySQLiteHelper

package com.example.practice1.sqliteHelper;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class MySQLiteHelper extends SQLiteOpenHelper {

    public MySQLiteHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version) {
        super(context, name, factory, version);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL("create table users(phone varchar(20),password varchar(20))");
        db.execSQL("create table code(codes varchar(20))");
        db.beginTransaction();
        for (int i = 0; i < 10; i++) {
            StringBuffer stringBuffer = new StringBuffer();
            for (int j = 0; j < 4; j++) {
                stringBuffer.append((int)Math.floor(Math.random()*10));
            }
            db.execSQL("insert into code(codes) values(?)",new Object[]{stringBuffer.toString()});
        }
        db.setTransactionSuccessful();
        db.endTransaction();
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

    }
}

BroadcastReceiver

package com.example.practice1.receiver;

import android.app.Notification;
import android.app.NotificationManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

import com.example.practice1.R;

public class MyReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {

        if (intent.getAction().equals("com.tooth.1708")) {
            String codes = intent.getStringExtra("codes");
            NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
            Notification.Builder builder = new Notification.Builder(context);
            builder.setContentText(codes);
            builder.setPriority(Notification.PRIORITY_MAX);
            builder.setDefaults(Notification.DEFAULT_ALL);
            builder.setSmallIcon(R.mipmap.ic_launcher);
            manager.notify(101,builder.build());
        }
    }
}

25000.0

发布了27 篇原创文章 · 获赞 0 · 访问量 627

私信关注

BroadCastReciver(广播接收者)

BroadCastReciver

基础代码

activity发出广播

broadcastresciver

作业

LoginActivity

RegisterActivity

MySQLiteHelper

BroadcastReceiver

猜你喜欢