我正在創建一個應用程序,當按下按鈕時,它會生成一些「for循環」的啁啾聲,並且我想在循環中阻止按鈕,並在循環時釋放它們結束了。Android:在一段時間後關閉按鈕
這個我試過,但應用程序崩潰:
package android.nacho.UltraSoundSender;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class UltraSoundSender extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ultra_sound_sender);
Button btnCode = (Button) findViewById(R.id.btnCode);
btnCode.setOnClickListener(new OnClickListener() {
//@Override
public void onClick(View arg0) {
enableButton(false);
new Thread(new Runnable()
{
public void run()
{
//working=false;
// int Code=Integer.parseInt(((EditText)findViewById(R.id.Code)).getText().toString());
//((EditText)findViewById(R.id.Code)).setText("");
String word= ((EditText)findViewById(R.id.Code)).getText().toString();
Integer digits[]= new Integer[64];
int NumChar= word.length();
//This split the string in chars
for(int i = 0; i < NumChar ; i++){
digits[i]=(int)word.charAt(i);
}
//Values of the chirp
int startFreq = 3000;
int endFreq = 7000;
double impulseDuration = 50;
for(int IndexChar= 0; IndexChar< NumChar ; IndexChar++)
{
new ChirpGenerator().playDOWN(startFreq, endFreq, impulseDuration, digits[IndexChar]);
try {
Thread.sleep(500);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
enableButton(true);
}
}).start();
}
});
}
//Enable/disable button
private void enableButton(boolean isEnable)
{
((Button)findViewById(R.id.btnCode)).setEnabled(isEnable);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_ultra_sound_sender, menu);
return true;
}
}
我得到這個errores在logcat中:
十一月6日至19日:15:00.852:E/AndroidRuntime(29419):致命例外: 線程-5516 06-19 11:15:00.852:E/AndroidRuntime(29419): android.view.ViewRootImpl $ CalledFromWrongThreadException:只有創建視圖層次結構的 原始線程才能觸摸其視圖。 06-19 11:15:00.852:E/AndroidRuntime(29419):at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:4746)06-19 11:15:00.852:E/AndroidRuntime(29419): at android.view.ViewRootImpl.invalidateChildInParent(ViewRootImpl.java:854) 06-19 11:15:00.852:E/AndroidRuntime(29419):at android.view.ViewGroup.invalidateChild(ViewGroup.java:4077)06 -19 11:15:00.852:E/AndroidRuntime(29419):at android.view.View.invalidate(View.java:10322)06-19 11:15:00.852: E/AndroidRuntime(29419):at android.widget.TextView.invalidateDrawable(TextView.java:4601)06-19 11:15:00.852:E/AndroidRuntime(29419):at android.graphics.drawabl (DrawableContainer.java:250) 06-19 11:15:00.852:E/AndroidRuntime(29419) 19 11:15:00.852:E/AndroidRuntime(29419):at android.graphics.drawable.Drawable.setVisible(Drawable.java:549)06-19 11:15:00.852:E/AndroidRuntime(29419):at android.graphics.drawable.DrawableContainer.selectDrawable(DrawableContainer.java:307) 06-19 11:15:00.852:E/AndroidRuntime(29419):at android.graphics.drawable.StateListDrawable.onStateChange(StateListDrawable.java: 106) 06-19 11:15:00.852:E/AndroidRuntime(29419):at android.graphics.drawable.Drawable.setState(Drawable.java:465)06- 19 11:15:00.852:E/AndroidRuntime(29419):at android.view.View.drawableStateChanged(View.java:14281)06-19 11:15:00.852:E/AndroidRuntime(29419):at android.widget.TextView.drawableStateChanged(TextView.java:3184)
我應該在哪裏調用enabale功能?我猜想脫離線程但是如何?
嘗試使用'AsyncTask'而不是你目前正在做的事情。 – 7bluephoenix