java Android Studio应用程序成功构建，但未运行

1 年，1 月 Questions & Answers 199

我是安卓 studio的新手，我刚刚完成了我的第一个应用程序，下面是（复制）这个视频中的代码：https://www.youtube.com/watch?v=gTy13ioTddg&t=594s

应用程序构建时没有问题，但当我尝试运行它时，它突然关闭

Android清单。xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
    package="com.example.pokedex">

    <application
        安卓:allowBackup="true"
        安卓:icon="@mipmap/ic_launcher"
        安卓:label="@string/app_name"
        安卓:roundIcon="@mipmap/ic_launcher_round"
        安卓:supportsRtl="true"
        安卓:theme="@style/Theme.Pokedex">
        <activity 安卓:name=".MainActivity">
            <intent-filter>
                <action 安卓:name="安卓.intent.action.MAIN" />

                <category 安卓:name="安卓.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

主要活动

package com.example.pokedex;

import 安卓x.appcompat.app.AppCompatActivity;
import 安卓.os.Bundle;

import 安卓x.recyclerview.widget.LinearLayoutManager;
import 安卓x.recyclerview.widget.RecyclerView;

public class MainActivity extends AppCompatActivity {

    private RecyclerView recyclerView;
    private RecyclerView.Adapter adapter;
    private RecyclerView.LayoutManager layoutManager;


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

        recyclerView=findViewById(R.id.recycler_view);
        adapter=new PokedexAdapter();
        layoutManager=new LinearLayoutManager(this);

        recyclerView.setAdapter(adapter);
        recyclerView.setLayoutManager(layoutManager);

    }
}

PokedexAdapter：

package com.example.pokedex;

import 安卓.view.LayoutInflater;
import 安卓.view.View;
import 安卓.view.ViewGroup;
import 安卓.widget.LinearLayout;
import 安卓.widget.TextView;

import 安卓x.annotation.NonNull;
import 安卓x.recyclerview.widget.RecyclerView;

import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.List;

public class PokedexAdapter extends RecyclerView.Adapter<PokedexAdapter.PokedexViewHolder>{

    public static class PokedexViewHolder extends RecyclerView.ViewHolder{
        public LinearLayout containerView;
        public TextView textView;
        PokedexViewHolder(View view){
            super(view);
            containerView=view.findViewById(R.id.pokedex_row);
            textView=view.findViewById(R.id.pokedex_row_text_view);

        }
    }

    private List<Pokemon> pokemon = Arrays.asList(
            new Pokemon("bulbasaur",1),
            new Pokemon("Ivisaur",2),
            new Pokemon ("Venasaur",3));

    @NonNull
    @Override
    public PokedexViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.pokedex_row,parent,false);
        return new PokedexViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull PokedexViewHolder holder, int position) {

        Pokemon current= pokemon.get(position);
        holder.textView.setText(current.getName());
    }

    @Override
    public int getItemCount() {
        return pokemon.size();
    }
}

建造。格拉德尔

plugins {
    id 'com.安卓.application'
}

安卓 {
    compileSdkVersion 30
    buildToolsVersion "30.0.2"

    defaultConfig {
        applicationId "com.example.pokedex"
        minSdkVersion 21
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "安卓.support.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-安卓-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {


    implementation 'com.安卓.support:appcompat-v7:+'
    implementation 'com.安卓.support.constraint:constraint-layout:2.0.4'
    implementation "安卓x.recyclerview:recyclerview:1.1.0"
    testImplementation 'junit:junit:4.+'
    安卓TestImplementation 'com.安卓.support.test:runner:1.0.2'
    安卓TestImplementation 'com.安卓.support.test.espresso:espresso-core:3.0.2'
}

格拉德尔。特性：

# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
安卓.useAndroidX=true
安卓.enableJetifier=true

如果有人能帮助我，我会非常感激的

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java Android Studio应用程序成功构建，但未运行

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