<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:
android="http://schemas.
android.com/apk/res/
android"
package="com.example.myapplication2">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/Theme.AppCompat.Light.DarkActionBar">
<!-- 先确保 MainActivity 能启动 -->
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action
android:name="
android.intent.action.MAIN" />
<category
android:name="
android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- 简化 Service 注册 -->
<service
android:name=".Service.MyService2"
android:enabled="true"
android:exported="false" />
</application>
</manifest>package com.example.myapplication2;
import
android.content.Intent;
import
android.os.Bundle;
import
android.view.View;
import
android.widget.Button;
import
androidx.appcompat.app.AppCompatActivity;
import com.example.myapplication2.R;
import Service.MyService2;
public class MainActivity extends AppCompatActivity {
private Intent mIntent;
private Button btnStartService;
private Button btnStopService;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_service);
initView();
mIntent = new Intent(this, MyService2.class);
}
private void initView() {
btnStartService = findViewById(R.id.btn_start_service);
btnStopService = findViewById(R.id.btn_stop_service);
btnStartService.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startService(mIntent);
}
});
btnStopService.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
stopService(mIntent);
}
});
}
}package Service;
import
android.app.Service;
import
android.content.Intent;
import
android.os.IBinder;
import
android.util.Log;
public class MyService2 extends Service {
private static final String TAG = "MyService2";
private int counter = 0;
private boolean isRunning = false;
public MyService2() {
}
@Override
public void onCreate() {
super.onCreate();
Log.e(TAG, "onCreate: ");
startCounter();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.e(TAG, "onStartCommand: 当前计数 = " + counter);
return START_STICKY;
}
@Override
public void onDestroy() {
super.onDestroy();
Log.e(TAG, "onDestroy: 最终计数 = " + counter);
stopCounter();
}
// 启动计数器
private void startCounter() {
isRunning = true;
new Thread(new Runnable() {
@Override
public void run() {
while (isRunning) {
try {
Thread.sleep(1000); // 1秒
counter++;
Log.e(TAG, "计数器: " + counter + " 秒");
} catch (InterruptedException e) {
break;
}
}
}
}).start();
}
// 停止计数器
private void stopCounter() {
isRunning = false;
}
@Override
public IBinder onBind(Intent intent) {
Log.e(TAG, "onBind: ");
return null;
}
}怎么修改使程序能欧成功运行，提供修改后的完整代码
本文介绍了从Java1.5到Java1.6版本中，覆写方法注解从仅限于父类方法扩展到接口方法的变化，并提供了在Eclipse中配置正确Java版本的方法。
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