Question

I m still learning and I ve tried to figure this out and I figured I d ask the experts. Any ideas?

I get the error on this line: final Button btn = (Button) findViewById ([btnIds]);

public class choiceTest extends Activity{



@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.atcchoice);
}
final OnClickListener listener = new OnClickListener() { 
     public void onClick(View v){ 
         switch(v.getId()){  
         case R.id.sec1:  
            break; 
         case R.id.sec2: 
            break; 
         case R.id.sec3: 
            break; 
         } 
     } 
};
final int[] btnIds = new int[]{R.id.sec1, R.id.sec2, R.id.sec3};{ 
for(int i = 0; i < btnIds.length; i++) { 
    final Button btn = (Button) findViewById ([btnIds]); 
    btn.setOnClickListener(listener); 
}



}
}

此外,这是下载方案,我正在利用阿因奇下载我的档案。我可以对上述法典作什么补充,把我的下载者URL改为另一个下载? 否则,我将有很长的法典...... 这里是如何下载《URL法》。

private void startDownload() {
    DownloadFile downloadFile = new DownloadFile();
    downloadFile.execute("http://www.website.com/document.pdf");

}

The async code to download it:

class DownloadFile extends AsyncTask<String, Integer, String> {

URL url = new URL(aurl[0]);

Answer 1

你们可以接触到这样一个阵列:

Button btn = (Button) findViewById( btnIds[i] );

Answer 2

your are passing whole array. change it:

for(int i = 0; i < btnIds.length; i++) { 
    final Button btn = (Button) findViewById ([btnIds]); 
    btn.setOnClickListener(listener); 
}

iii

for(int i = 0; i < btnIds.length; i++) { 
    final Button btn = (Button) findViewById (btnIds[i]); 
    btn.setOnClickListener(listener); 
}

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