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我想设计一个程序,使网站上的多个API调用(每个“名称”有几个模式,我必须循环,然后再移动到下一个名称)。问题是,你仅限于每秒调用一次API。我认为处理程序是要走的路,但现在我不这么认为。多个处理程序循环Android
它贯穿循环就好,但我不这么认为。我得到以下错误:
编辑:想通了,这正在造成
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): FATAL EXCEPTION: AsyncTask #1
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): java.lang.RuntimeException: An error occured while executing doInBackground()
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at android.os.AsyncTask$3.done(AsyncTask.java:266)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1081)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:574)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at java.lang.Thread.run(Thread.java:1020)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): Caused by: android.content.res.Resources$NotFoundException: String array resource ID #0x7f050002
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at android.content.res.Resources.getStringArray(Resources.java:459)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at com.companionfree.flurryanalytics.APICallData.doInBackground(APICallData.java:66)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at com.companionfree.flurryanalytics.APICallData.doInBackground(APICallData.java:1)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at android.os.AsyncTask$2.call(AsyncTask.java:252)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
09-21 22:33:46.760: ERROR/AndroidRuntime(9683): ... 4 more
当我拨打这个电话在我的异步任务:
String[] metrics = r.getStringArray(R.array.metric_apicall);
我不认为我的代码是为我正在尝试做的而设计的。任何人都可以告诉我,如果这是正确的方法?...此外,APICallData(MainActivity.this,应用程序,模式).execute();是一个异步任务。
//Other code above this irrelevant
mApp = 0;
mMode = 0;
callAPI(mMode, names[mApp]);
mMode++;
while (mApp < names.length) {
while (mMode < metrics.length) {
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
callAPI(mMode, names[mApp]);
}
}, 1010);
mMode++;
}
mMode = 0;
mApp++;
}
private void callAPI(int mode, String app) {
new APICallData(MainActivity.this, app, mode).execute();
}
这难道不会冻结整个过程吗?我需要它作为后台更新... – easycheese
直接从java文档.....计时器是线程的工具,用于在后台线程中安排将来执行的任务。可以安排一次性执行任务,或定期重复执行任务。 对应于每个Timer对象是一个后台线程,用于执行所有定时器的任务。希望这有助于清除你的疑惑 – CommonMan