应用程序在主线程上做太多工作（Firebase 和 OnLongClickListener）

Question

我正在尝试让我的应用程序向 firebase 发送信息，起初它允许它向 firebase 发送信息，但第二次它显示一条消息 “跳过了 n# 帧！应用程序可能在其主线程上做了太多工作。”和“后台并发复制 GC 释放 185001(8MB) AllocSpace objects, 0(0B) LOS objects, 31% free, 12MB/18MB...”。

它的主要功能是如果游戏的按钮被长时间点击（OnLongClickListener），则发送有关游戏的信息。

这个函数的java文件是这样的：

HomePageActivity.java

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

import com.firebase.client.DataSnapshot;
import com.firebase.client.Firebase;
import com.firebase.client.FirebaseError;
import com.firebase.client.ValueEventListener;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;

public class HomePageActivity extends AppCompatActivity {

    private FirebaseAuth firebaseAuth;
    private Firebase FavDBRef;
    private FirebaseUser firebaseUser;
    private Button LeagueButton, OWButton, CSGOButton, DOTAButton;

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

    }

    public void setupUIViews(){
        LeagueButton = findViewById(R.id.leagueButton);
        OWButton = findViewById(R.id.owButton);
        CSGOButton = findViewById(R.id.csgoButton);
        DOTAButton = findViewById(R.id.dotaButton);
    }

    public void onStart() {
        super.onStart();
        FirebaseUser currentUser = firebaseAuth.getCurrentUser();
    }

    public void gameButtons(){

        Firebase.setAndroidContext(this);

        firebaseAuth = FirebaseAuth.getInstance();
        firebaseUser = firebaseAuth.getCurrentUser();

        FavDBRef = new Firebase("https://mwt-esportsinfo-userfav.firebaseio.com/" + firebaseUser.getUid()).child("FavEsport");

        LeagueButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                startActivity(new Intent(HomePageActivity.this, LeagueOfLegends.class));
            }
        });

        LeagueButton.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {

                FavDBRef.addValueEventListener(new ValueEventListener() {
                    @Override
                    public void onDataChange(DataSnapshot dataSnapshot) {
                        String FavEsport = "League of Legends";
                        String FavEsportDev = "Riot Games";
                        String FavEsportRel = "27 October 2009";
                        String FavEsportGenre = "Multiplayer Online Battle Arena";
                        String FavEsportImg = "https://vignette.wikia.nocookie.net/leagueoflegends/images/8/86/League_of_legends_logo_transparent.png/revision/latest/scale-to-width-down/640?cb=20131023175853";

                        UserFavESport userFavESport = new UserFavESport(FavEsport, FavEsportDev, FavEsportRel, FavEsportGenre, FavEsportImg);

                        FavDBRef.setValue(userFavESport);

                        Toast.makeText(HomePageActivity.this, FavEsport + " has been added as Favourite eSport", Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onCancelled(FirebaseError firebaseError) {

                    }
                });

                return false;
            }
        });

        OWButton.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                FavDBRef.addValueEventListener(new ValueEventListener() {
                    @Override
                    public void onDataChange(DataSnapshot dataSnapshot) {
                        String FavEsport = "Overwatch";
                        String FavEsportDev = "Blizzard Entertainment";
                        String FavEsportRel = "24 May 2016";
                        String FavEsportGenre = "First-Person Shooter";
                        String FavEsportImg = "https://vignette.wikia.nocookie.net/dbxfanon/images/8/84/Overwatch_logo_by_feeerieke-da4xuzp.png/revision/latest?cb=20170316184119";

                        UserFavESport userFavESport = new UserFavESport(FavEsport, FavEsportDev, FavEsportRel, FavEsportGenre, FavEsportImg);

                        FavDBRef.setValue(userFavESport);

                        Toast.makeText(HomePageActivity.this, FavEsport + " has been added as Favourite eSport", Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onCancelled(FirebaseError firebaseError) {

                    }
                });

                return false;
            }
        });

        CSGOButton.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                FavDBRef.addValueEventListener(new ValueEventListener() {
                    @Override
                    public void onDataChange(DataSnapshot dataSnapshot) {
                        String FavEsport = "Counter-Strike: Global Offensive";
                        String FavEsportDev = "Valve Corporation";
                        String FavEsportRel = "21 August 2012";
                        String FavEsportGenre = "First-Person Shooter";
                        String FavEsportImg = "https://vignette.wikia.nocookie.net/logopedia/images/c/c8/CSGO.png/revision/latest?cb=20150828062634";

                        UserFavESport userFavESport = new UserFavESport(FavEsport, FavEsportDev, FavEsportRel, FavEsportGenre, FavEsportImg);

                        FavDBRef.setValue(userFavESport);

                        Toast.makeText(HomePageActivity.this, FavEsport + " has been added as Favourite eSport", Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onCancelled(FirebaseError firebaseError) {

                    }
                });

                return false;
            }
        });

        DOTAButton.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                FavDBRef.addValueEventListener(new ValueEventListener() {
                    @Override
                    public void onDataChange(DataSnapshot dataSnapshot) {
                        String FavEsport = "DOTA 2";
                        String FavEsportDev = "Valve Corporation";
                        String FavEsportRel = "9 July 2013";
                        String FavEsportGenre = "Multiplayer Online Battle Arena";
                        String FavEsportImg = "http://www.userlogos.org/files/logos/Kravlenissen/Dota-2%284x3%291-1.png";

                        UserFavESport userFavESport = new UserFavESport(FavEsport, FavEsportDev, FavEsportRel, FavEsportGenre, FavEsportImg);

                        FavDBRef.setValue(userFavESport);

                        Toast.makeText(HomePageActivity.this, FavEsport + " has been added as Favourite eSport", Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onCancelled(FirebaseError firebaseError) {

                    }
                });

                return false;
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main_menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == R.id.profileMenu){
            startActivity(new Intent(HomePageActivity.this, UserProfileActivity.class));
        }
        if (item.getItemId() == R.id.logoutMenu){
            Logout();
        }
        else{
            return super.onOptionsItemSelected(item);
        }
        return true;
    }

    private void Logout(){
        firebaseAuth.signOut();
        finish();
        startActivity(new Intent(HomePageActivity.this, LoginActivity.class));
    }
}

并用于检索这些信息。

UserFavESport.java

public class UserFavESport {
    String favEsports, favEsportsDev, favEsportsRel, favEsportsGenre, favEsportsImg ;

    public UserFavESport(){

    }

    public UserFavESport(String favEsports, String favEsportsDev, String favEsportsRel, String favEsportsGenre, String favEsportsImg) {
        this.favEsports = favEsports;
        this.favEsportsDev = favEsportsDev;
        this.favEsportsRel = favEsportsRel;
        this.favEsportsGenre = favEsportsGenre;
        this.favEsportsImg = favEsportsImg;
    }

    public String getFavEsports() {
        return favEsports;
    }

    public void setFavEsports(String favEsports) {
        this.favEsports = favEsports;
    }

    public String getFavEsportsDev() {
        return favEsportsDev;
    }

    public void setFavEsportsDev(String favEsportsDev) {
        this.favEsportsDev = favEsportsDev;
    }

    public String getFavEsportsRel() {
        return favEsportsRel;
    }

    public void setFavEsportsRel(String favEsportsRel) {
        this.favEsportsRel = favEsportsRel;
    }

    public String getFavEsportsGenre() {
        return favEsportsGenre;
    }

    public void setFavEsportsGenre(String favEsportsGenre) {
        this.favEsportsGenre = favEsportsGenre;
    }

    public String getFavEsportsImg() {
        return favEsportsImg;
    }

    public void setFavEsportsImg(String favEsportsImg) {
        this.favEsportsImg = favEsportsImg;
    }
}

对此的任何帮助将不胜感激。

谢谢

Answer 1

“应用程序可能在其主线程上做太多工作”错误表明您在主线程上执行了长时间的操作。我们应该始终避免在主线程上进行长时间的操作，而是在后台线程上进行。除了在按钮的长按监听器中显示 toast 之外，您的所有代码都应该在新线程而不是主线程上运行。只需在单击侦听器方法中创建一个新线程并将这项工作委托给新线程即可。

您可以使用 Thread 和 Runnable 处理主线程之外的数据，或者如果您想将结果传回 UI 线程，则可以使用 Async 任务。