77 lines
2.5 KiB
Java
77 lines
2.5 KiB
Java
package com.github.catvod.spider;
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import android.app.Activity;
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import android.app.Application;
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import android.content.Context;
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import android.os.Handler;
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import android.os.Looper;
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import com.github.catvod.crawler.SpiderDebug;
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import java.lang.reflect.Field;
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import java.util.Map;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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public class Init {
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private final ExecutorService executor;
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private final Handler handler;
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private Application app;
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private static class Loader {
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static volatile Init INSTANCE = new Init();
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}
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public static Init get() {
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return Loader.INSTANCE;
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}
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public Init() {
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this.handler = new Handler(Looper.getMainLooper());
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this.executor = Executors.newFixedThreadPool(5);
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}
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public static Application context() {
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return get().app;
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}
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public static void init(Context context) {
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get().app = ((Application) context);
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SpiderDebug.log("自定義爬蟲代碼載入成功！");
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}
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public static void execute(Runnable runnable) {
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get().executor.execute(runnable);
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}
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public static void run(Runnable runnable) {
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get().handler.post(runnable);
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}
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public static void run(Runnable runnable, int delay) {
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get().handler.postDelayed(runnable, delay);
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}
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public static Activity getActivity() throws Exception {
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Class<?> activityThreadClass = Class.forName("android.app.ActivityThread");
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Object activityThread = activityThreadClass.getMethod("currentActivityThread").invoke(null);
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Field activitiesField = activityThreadClass.getDeclaredField("mActivities");
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activitiesField.setAccessible(true);
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Map<?, ?> activities = (Map<?, ?>) activitiesField.get(activityThread);
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for (Object activityRecord : activities.values()) {
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Class<?> activityRecordClass = activityRecord.getClass();
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Field pausedField = activityRecordClass.getDeclaredField("paused");
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pausedField.setAccessible(true);
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if (!pausedField.getBoolean(activityRecord)) {
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Field activityField = activityRecordClass.getDeclaredField("activity");
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activityField.setAccessible(true);
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Activity activity = (Activity) activityField.get(activityRecord);
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SpiderDebug.log(activity.getComponentName().getClassName());
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return activity;
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}
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}
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return null;
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}
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}
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