1. 延時任務以及取消延時的應用場景：實時搜索，文字內容變化時候不發送請求，當停止變化指定時間后再發送請求
2. 使用方法：
// 回到主線程
MainThreadHelper.runOnUIthread(new Runnable() {
@Override
public void run() {
// pushActivity();
}
});
// 延時調用以及取消延遲
MainThreadHelper.runDelayedCall(300, new MainThreadHelper.DelayedCallListener() {
@Override
public void onClick() {
// animalHiddenView();
}
});
3. 實現類代碼：
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
/**
* Created by jing on 17/5/19.
* 線程管理～
*/
public class MainThreadHelper{
private MainThreadHelper(){ super(); }
// 單利模式
private static MainThreadHelper mainThreadHelper = new MainThreadHelper();
/**
* 回到在主線程
**/
private MainThreadComplate mainThreadComplate = new MainThreadComplate();
public static void runOnUIthread(Runnable runnable){
mainThreadHelper.mainThreadComplate.runOnUIthread(runnable);
}
/**
* 打印當前線程
* */
public static void logCurrentThread(){
String string = Thread.currentThread().toString();
Log.d("當前線程",string);
}
/** 延時任務以及取消延時 */
private DelayedCallComplate delayedCallComplate = new DelayedCallComplate();
public interface DelayedCallListener{
void onClick();
}
public static void runDelayedCall(long delayMillis,DelayedCallListener listener){
mainThreadHelper.delayedCallComplate.runDelayedCall(delayMillis,listener);
}
}
/** 主線程相關類 */
class MainThreadComplate{
private Handler handler = new Handler(Looper.getMainLooper());
/** 回到在主線程 */
public void runOnUIthread(Runnable runnable){
if (Looper.myLooper() == Looper.getMainLooper()){
runnable.run();
return;
}
handler.post(runnable);
}
}
/** 延時任務以及取消延時類 */
class DelayedCallComplate implements Runnable{
private MainThreadHelper.DelayedCallListener listener = null;
private Handler handler = new Handler(Looper.getMainLooper());
public void runDelayedCall(long delayMillis,MainThreadHelper.DelayedCallListener listener){
this.listener = listener;
handler.removeCallbacks(this);
handler.postDelayed(this,delayMillis);
}
@Override
public void run() {
if (listener == null) return;
listener.onClick();
}
}
