大家好項目得到了保存在SD卡上的音頻應用程序。我創建了一個從SD卡中檢索文件名的列表視圖。我試圖設置一個偵聽器,以便在文件名被點擊,我可以啓動另一個意圖播放該文件。當我嘗試設置監聽器,並通過在新OnItemClickListener()日食是紅色下劃線它。我明白我必須實現onItemclick(),這是我認爲的意圖應該去。有任何想法嗎?使用setOnItemClickListener在列表視圖
感謝
代碼:
package com.tecmark;
import java.io.File;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
public class SdGetList extends Activity {
private ListView lv1;
private String[] lv_arr;
private ArrayList<String> arr;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.listlayout);
arr = new ArrayList<String>();
File sdCardRoot = Environment.getExternalStorageDirectory();
Log.i("root on sd =", ""+ sdCardRoot.getPath());
for (File f : sdCardRoot.listFiles()) {
if (f.isFile()){
String name = f.getName();
arr.add(name);
Log.i("arr is empty?******", ""+arr.isEmpty());
}
else {
Log.i("file", " no file");
}
Log.i("arr******", ""+arr.size());
}
lv_arr = new String[arr.size()];
for(int i=0 ; i<arr.size();i++) {
lv_arr[i] = arr.get(i);
}
lv1=(ListView)findViewById(R.id.ListView01);
// By using setAdpater method in listview we an add string array in list.
lv1.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 , lv_arr));
lv1.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
}
});
}
}
什麼是Eclipse紅色下劃線? OnItemClickListener,或者你放入onItemClick方法的代碼,這裏沒有列出?無論如何,Eclipse非常好,可以爲您提供反饋,說明爲什麼它會突出顯示某些內容。 – Rich 2011-02-14 14:13:53