List Viewを介してデータを表示しているアプリケーションで を取得しましたBase Adapter。それらは私が直面している2つの問題であり、いくつかの投稿を参照しましたが、すべて私が従った同じ手順を提案しました.
問題は
JSONから指定されたURLから画像をダウンロードしようとしています。すべてがスムーズに機能していますが、画像が に設定されることはありません
Image View。Text to Speechクラスのボタンのクリック イベントにバインドしBase Adapter、それを Java クラスで解放しましたがonDestroy、ログにエラーが表示され、アプリケーションがクラッシュします。ここで、ログ エラーの 55 行目は の最初のステートメントです。onDestroy
これが私のコードです
Java ファイル
public class DisplayWeather extends Activity {
String city, date, maximumTemp, minimumTemp, description, weatherImageUrl;
ListView weatherList;
List <Bean> bean;
Bitmap myBitmap, newBitmap;
CustomBaseAdapter baseAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.display_weather);
bean = new ArrayList<Bean>();
weatherList = (ListView) findViewById(R.id.lvWeather);
for(int i=0; i<WeatherHome.arrayList.size(); i++)
{
.
.
}
weatherList.setAdapter(new CustomBaseAdapter(this, bean));
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
if (baseAdapter.tts != null)
{
baseAdapter.tts.stop();
baseAdapter.tts.shutdown();
}
super.onDestroy();
}
基本アダプター クラス
public class CustomBaseAdapter extends BaseAdapter implements OnInitListener {
Context context;
List<Bean> bean;
ImageView weatherImage;
TextView weatherDate, weatherCity, weatherMinimum, weatherMaximum, weatherDescription;
Button buttonSpeak;
String citySpeak, dateSpeak, descriptionSpeak, maximumSpeak, minimumSpeak, weatherURL;
TextToSpeech tts;
Bean userBean;
Bitmap myBitmap;
public CustomBaseAdapter(Context context, List<Bean> bean) {
// TODO Auto-generated constructor stub
this.context = context;
this.bean = bean;
tts = new TextToSpeech(context, null);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return bean.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return bean.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return bean.indexOf(getItem(position));
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if(convertView == null)
{
convertView = inflater.inflate(R.layout.custom_base_adapter, null);
weatherImage = (ImageView) convertView.findViewById(R.id.displayImage);
convertView.findViewById(R.id.displayDate);
buttonSpeak = (Button) convertView.findViewById(R.id.Speak);
}
weatherURL = userBean.getImageUrl();
new ImageDownload().execute();
Log.i("Executing Rest Line>>>", "Skippedddddd");
buttonSpeak.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String cityName = weatherCity.getText().toString();
String dateValue = weatherDate.getText().toString();
String maximumValue = weatherMaximum.getText().toString();
String minimumValue = weatherMinimum.getText().toString();
String descriptionValue = weatherDescription.getText().toString();
citySpeak = "Temprature for city "+cityName+"";
dateSpeak = " on Date "+dateValue+"";
maximumSpeak = "will be Maximum upto "+maximumValue+" degree ";
minimumSpeak = " and Minimum upto"+minimumValue+" degree ";
descriptionSpeak = "and The atmosphere seems to be "+descriptionValue+"";
speakTempratureValues();
}
});
return convertView;
}
private class ImageDownload extends AsyncTask<String, Void, Bitmap>{
protected Bitmap doInBackground(String... arg0){
try{
Log.e("src",weatherURL);
URL url = new URL(weatherURL);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
myBitmap = BitmapFactory.decodeStream(input);
Log.e("Bitmap","returned");
return myBitmap;
}
catch(Exception e){
e.printStackTrace();
return null;
}
}
protected void onPostExecute(Bitmap result){
if(result!=null)
{
Log.i("OnPost>>>", ""+result);
weatherImage.setImageBitmap(result);
}
}
}
protected void speakTempratureValues() {
// TODO Auto-generated method stub
tts.setSpeechRate(-4);
tts.speak(citySpeak, TextToSpeech.QUEUE_FLUSH, null);
tts.speak(dateSpeak, TextToSpeech.QUEUE_ADD, null);
tts.speak(maximumSpeak, TextToSpeech.QUEUE_ADD, null);
tts.speak(minimumSpeak, TextToSpeech.QUEUE_ADD, null);
tts.speak(descriptionSpeak, TextToSpeech.QUEUE_ADD, null);
tts.speak("Thank You", TextToSpeech.QUEUE_ADD, null);
}
@Override
public void onInit(int status) {
// TODO Auto-generated method stub
if(status==TextToSpeech.SUCCESS){
int result = tts.setLanguage(Locale.getDefault());
if (result == TextToSpeech.LANG_MISSING_DATA
|| result == TextToSpeech.LANG_NOT_SUPPORTED) {
Log.e("TTS", "This Language is not supported");
}
else{
speakTempratureValues();
}
}
else{
Log.e("TTS", "Initialization Failed");
}
}
}