我正在爲從API檢索股票信息的類製作應用程序。我已經設置了一種基於用戶的輸入股票代碼檢索JSON數據的方法。現在有兩個textview,一個顯示公司名稱和一個顯示股票變化值的顯示視圖。但是,只有顯示其文本集的textview纔會顯示,然後另一個不受影響。 這裏是搜索按鈕被點擊時的控制檯輸出:Android應用程序將只顯示一個JSON元素
04-24 23:24:29.782 8144-8589/com.webdesigners.stockmarket W/System.err的:android.view.ViewRootImpl $ CalledFromWrongThreadException:只有創建視圖層次結構的原始線程可以觸及其視圖。 04-24 23:24:29.783 8144-8589/com.webdesigners.stockmarket W/System.err:at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:6357) 04-24 23:24:29.783 8144- 8589/com.webdesigners.stockmarket W/System.err:at android.view.ViewRootImpl.invalidateChildInParent(ViewRootImpl.java:909) 04-24 23:24:29.783 8144-8589/com.webdesigners.stockmarket W/System。 err:at android.view.ViewGroup.invalidateChild(ViewGroup.java:4690) 04-24 23:24:29.783 8144-8589/com.webdesigners.stockmarket W/System.err:at android.view.View.invalidateInternal( View.java:11801) 04-24 23:24:29.783 8144-8589/com.webdesigners.stockmarket W/System.err:at android.view.View.invalidate(View.java:11765) 04-24 23 :24:29.783 8144-8589/com.webdesigners.stockmarket W/System.err:at android.view.View.invalidate(View.java:11749) 04-24 23:24:29.783 8144-8589/com.webdesigners.stockmarket W/System.err:at android.widget.TextView.checkForRelayout(TextView.java:6850) 04-24 23:24:29.783 8144- 8589/com.webdesigners.stockmarket W/System.err:at android.widget.TextView.setText(TextView.java:4057) 04-24 23:24:29.783 8144-8589/com.webdesigners.stockmarket W/System。 err:at android.widget.TextView.setText(TextView.java:3915) 04-24 23:24:29.783 8144-8589/com.webdesigners.stockmarket W/System.err:at android.widget.TextView.setText( (MainActivity.java:74) 04-24 23:24:29.784 8144-8589/com.webdesigners.stockmarket W/System.err:在okhttp3.RealCall $ AsyncCall.execute(RealCall.java:133) 04-24 23:24:29.784 8144-8589/com.webdesigners.stockmarket W/System.err:at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) 04-24 23:24:29.784 8144- 8589/com.webdesigners.stockmarket W/System.err:在java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 04-24 23:24:29.784 8144-8589/com.webdesigners.stockmarket W/System.err:在java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:587) 04-24 23:24:29.784 8144-8589/com.webdesigners.stockmarket W/System.err:at java。 lang.Thread.run(Thread.java:818)
searchButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String userSymbol = searchEditText.getText().toString();
try
{
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url("http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20%28%22" + userSymbol + "%22%29&env=store://datatables.org/alltableswithkeys&format=json").build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
@Override
public void onResponse(Call call, final Response response) throws IOException {
if (!response.isSuccessful())
{
}
else
{
String responseData = response.body().string();
try
{
TextView symbol = (TextView)findViewById(R.id.symbol);
TextView change = (TextView)findViewById(R.id.change);
//get object at "quote" level where most attributes are
JSONObject jsonObject = new JSONObject(responseData);
JSONObject query = jsonObject.getJSONObject("query");
JSONObject results = query.getJSONObject("results");
JSONObject quote = results.getJSONObject("quote");
Long changeValue = quote.getLong("Change");
String changeString = Long.toString(changeValue);
assert change != null;
change.setText(changeString);
assert symbol != null;
String companyName = quote.getString("Name");
String companyNameConcat = "Name: " + companyName;
symbol.setText(companyNameConcat);
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
});
}
catch(Exception e)
{
}
}
});
這工作!我只是將文本設置器放入runOnUiThread(新的Runnable(...))方法中,並且它工作正常!謝謝 –
太棒了@Daniel! –