【发布时间】：2015-12-21 20:48:27
【问题描述】：
我解析了列表视图中的所有文本视图和图像，但是当我尝试单击单个列表视图时，它确实显示文本视图但不显示图像视图 bdw 我不知道如何获取它。
MainActivity.java`
public class MainActivity extends Activity {
static ArrayList<Actors> actorsList;
ActorAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
actorsList = new ArrayList<Actors>();
//final ArrayList<Actors> movieList = new ArrayList<Actors>();
new JSONAsyncTask().execute("http://microblogging.wingnity.com/JSONParsingTutorial/jsonActors");
ListView listview = (ListView)findViewById(R.id.list);
adapter = new ActorAdapter(getApplicationContext(), R.layout.row, actorsList);
listview.setAdapter(adapter);
listview.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long id) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), actorsList.get(position).getName(), Toast.LENGTH_LONG).show();
Actors m = actorsList.get(position);
Intent i = new Intent(MainActivity.this, SingleView.class);
i.putExtra("position", String.valueOf(position));
i.putExtra("thumb", m.getImage());
i.putExtra("name", m.getName());
i.putExtra("dob", m.getDob());
i.putExtra("height", m.getHeight());
i.putExtra("country", m.getCountry());
// View imageView = null;
//imageView.buildDrawingCache();
// Bitmap image= imageView.getDrawingCache();
// Bundle extras = new Bundle();
// extras.putParcelable("imagebitmap", image);
// i.putExtras(extras);
startActivity(i);
}
});
}
class JSONAsyncTask extends AsyncTask<String, Void, Boolean> {
ProgressDialog dialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
dialog = new ProgressDialog(MainActivity.this);
dialog.setMessage("Loading, please wait");
dialog.setTitle("Connecting server");
dialog.show();
dialog.setCancelable(false);
}
@Override
protected Boolean doInBackground(String... urls) {
try {
//------------------>>
HttpGet httppost = new HttpGet(urls[0]);
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = httpclient.execute(httppost);
// StatusLine stat = response.getStatusLine();
int status = response.getStatusLine().getStatusCode();
if (status == 200) {
HttpEntity entity = response.getEntity();
String data = EntityUtils.toString(entity);
JSONObject jsono = new JSONObject(data);
JSONArray jarray = jsono.getJSONArray("actors");
for (int i = 0; i < jarray.length(); i++) {
JSONObject object = jarray.getJSONObject(i);
Actors actor = new Actors();
actor.setName(object.getString("name"));
actor.setDescription(object.getString("description"));
actor.setDob(object.getString("dob"));
actor.setCountry(object.getString("country"));
actor.setHeight(object.getString("height"));
actor.setSpouse(object.getString("spouse"));
actor.setChildren(object.getString("children"));
actor.setImage(object.getString("image"));
actorsList.add(actor);
}
return true;
}
//------------------>>
} catch (ParseException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return false;
}
protected void onPostExecute(Boolean result) {
dialog.cancel();
adapter.notifyDataSetChanged();
if(result == false)
Toast.makeText(getApplicationContext(), "Unable to fetch data from server", Toast.LENGTH_LONG).show();
}
}
ActorAdapter.java
public class ActorAdapter extends ArrayAdapter<Actors> {
ArrayList<Actors> actorList;
LayoutInflater vi;
int Resource;
ViewHolder holder;
private static ActorAdapter mInstance;
public void onCreate() {
mInstance = this;
}
public ActorAdapter(Context context, int resource, ArrayList<Actors> objects) {
super(context, resource, objects);
vi = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
Resource = resource;
actorList = objects;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// convert view = design
View v = convertView;
if (v == null) {
holder = new ViewHolder();
v = vi.inflate(Resource, null);
holder.imageview = (ImageView) v.findViewById(R.id.ivImage);
holder.tvName = (TextView) v.findViewById(R.id.tvName);
holder.tvDescription = (TextView) v.findViewById(R.id.tvDescriptionn);
holder.tvDOB = (TextView) v.findViewById(R.id.tvDateOfBirth);
holder.tvCountry = (TextView) v.findViewById(R.id.tvCountry);
holder.tvHeight = (TextView) v.findViewById(R.id.tvHeight);
holder.tvSpouse = (TextView) v.findViewById(R.id.tvSpouse);
holder.tvChildren = (TextView) v.findViewById(R.id.tvChildren);
v.setTag(holder);
} else {
holder = (ViewHolder) v.getTag();
}
holder.imageview.setImageResource(R.drawable.ic_launcher);
new DownloadImageTask(holder.imageview).execute(actorList.get(position).getImage());
holder.tvName.setText(actorList.get(position).getName());
holder.tvDescription.setText(actorList.get(position).getDescription());
holder.tvDOB.setText("B'day: " + actorList.get(position).getDob());
holder.tvCountry.setText(actorList.get(position).getCountry());
holder.tvHeight.setText("Height: " + actorList.get(position).getHeight());
holder.tvSpouse.setText("Spouse: " + actorList.get(position).getSpouse());
holder.tvChildren.setText("Children: " + actorList.get(position).getChildren());
return v;
}
static class ViewHolder {
public ImageView imageview;
public TextView tvName;
public TextView tvDescription;
public TextView tvDOB;
public TextView tvCountry;
public TextView tvHeight;
public TextView tvSpouse;
public TextView tvChildren;
}
class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
ImageView bmImage;
public DownloadImageTask(ImageView bmImage) {
this.bmImage = bmImage;
}
protected Bitmap doInBackground(String... urls) {
String urldisplay = urls[0];
Bitmap mIcon11 = null;
try {
InputStream in = new java.net.URL(urldisplay).openStream();
mIcon11 = BitmapFactory.decodeStream(in);
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return mIcon11;
}
protected void onPostExecute(Bitmap result) {
bmImage.setImageBitmap(result);
}
}
public static ActorAdapter getInstance() {
// TODO Auto-generated method stub
return mInstance;
}
SingleView.Java
public class SingleView extends Activity{
TextView name,dob,height,country;
Button back,prev,nxt;
ImageView img ;
//imageLoader = ActorAdapter.getInstance().getImage();
private ArrayList<Actors> movieList_detail = new ArrayList<Actors>();
int selected = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.singleview);
Intent i = getIntent();
final String image1 = i.getStringExtra("thumb");
String name1 = i.getStringExtra("name");
String dob1 = i.getStringExtra("dob");
String height1 = i.getStringExtra("height");
String country1 = i.getStringExtra("country");
img = (ImageView)findViewById(R.id.ivImage);
name = (TextView)findViewById(R.id.tvName);
dob = (TextView)findViewById(R.id.tvDateOfBirth);
height = (TextView)findViewById(R.id.tvHeight);
country = (TextView)findViewById(R.id.tvCountry);
back = (Button)findViewById(R.id.button1);
prev = (Button)findViewById(R.id.button2);
nxt = (Button)findViewById(R.id.button3);
movieList_detail = MainActivity.actorsList;
name.setText(name1);
dob.setText(dob1);
height.setText(height1);
country.setText(country1);
back.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
finish();
}
});
prev.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(selected>0){
selected--;
Actors m = movieList_detail.get(selected);
//String image = m.getThumbnailUrl();
name.setText(m.getName());
dob.setText(m.getDob());
height.setText(m.getHeight());
country.setText(m.getCountry());
// img.DisplayImage(m.getImage(), image1);
nxt.setVisibility(View.VISIBLE);
}else
{
prev.setVisibility(View.GONE);
}
}
});
nxt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(selected<5){
selected++;
Actors m = movieList_detail.get(selected);
//String image = m.getThumbnailUrl();
name.setText(m.getName());
dob.setText(m.getDob());
height.setText(m.getHeight());
country.setText(m.getCountry());
// imageLoader.DisplayImage(m.getImage(), img);
prev.setVisibility(View.VISIBLE);
}else
{
nxt.setVisibility(View.GONE);
}
}
});
}
}
Actors.java
public class Actors {
private String name;
private String description;
private String dob;
private String country;
private String height;
private String spouse;
private String children;
private String image;
public Actors() {
// TODO Auto-generated constructor stub
}
public Actors(String name, String description, String dob, String country,
String height, String spouse, String children, String image) {
super();
this.name = name;
this.description = description;
this.dob = dob;
this.country = country;
this.height = height;
this.spouse = spouse;
this.children = children;
this.image = image;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getDob() {
return dob;
}
public void setDob(String dob) {
this.dob = dob;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String getHeight() {
return height;
}
public void setHeight(String height) {
this.height = height;
}
public String getSpouse() {
return spouse;
}
public void setSpouse(String spouse) {
this.spouse = spouse;
}
public String getChildren() {
return children;
}
public void setChildren(String children) {
this.children = children;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
}
【问题讨论】：
-
您的问题不清楚，我看到您的 MainActivity 在列出您在 ActorAdapter 中加载图像的位置。但是在您的单视图活动中，您没有加载图像。那么它将如何显示图像？？？如果你愿意，你可以使用 Glide 或 Picasso 图片加载库。
-
亲爱的@Sudhanshu，您将图片网址放在 SingleViewActivity 的意图中，您需要运行图片下载器任务以在 SingleViewActivity 的图片视图上设置图片。
-
这就是我要问 Neeraj 如何在 singleview.java 类中设置图像，我通过意图并从 MainActivity 获取它并设置所有文本视图但无法设置图像视图找不到适当的解决方案。