我知道有很多这类问题，但这是我的问题
我有一个带有图像的图库，当我点击时，会有ImageView在图库中显示所选图像
我还有一个TextView女巫会显示一条消息
当我点击图库中的图片时，我的ImageView会获取图片，TextTiew不会更新其数据。
我试图将代码放在try/catch块中，并且不会抛出任何异常
在我的日志中，TextView具有我提供的确切文本
我尝试使用新线程，但结果是一样的：TextView没有更新，但我的ImageView没有更新。
我尝试使用runOnUiThread（据我所知它与Thread相同），但仍然没有。
我也从TextView更改为EditText，但我遇到了同样的问题
每个人都说：“使用一个线程” - 我做了，但它没有用
我的想法用完了......
public class VODInterface extends Activity {
public static String[] values;
private static int itemPosition;
public static Activity thisActivity;
public Gallery gallery;
public ListView listView;
public LinearLayout MovieView;
public ImageView imgview;
public boolean submenus=false;
public boolean listviewVisibility = true;
private Handler handler = new Handler() ;
private SharedPreferences ep;
public ArrayList<VODObject> vod;
private ArrayList<Bitmap> tempimg;
private static int MovieSetNumber = 1;
public static int VODIndexPosition = 0;
public VODInterface(){
}
public void onDestroy(){
MainActivity.inChild=false;
super.onDestroy();
}
public void onCreate(Bundle bundle){
super.onCreate(bundle);
this.setContentView(R.layout.listview2);
ep = getSharedPreferences("Settings", 0);
listView = (ListView) this.findViewById(R.id.listView1);
MovieView = (LinearLayout) this.findViewById(R.id.movieView);
imgview = (ImageView)this.findViewById(R.id.imageView2);
// Defined Array values to show in ListView
values = new String[] { "A..Z",
"Category",
"Most Rated",
"Most Watched",
"Recently"
};
//this shows whitch movie should me load images
//we show always only 10 movies
MovieSetNumber = 1;
// Define a new Adapter
// First parameter - Context
// Second parameter - Layout for the row
// Third parameter - ID of the TextView to which the data is written
// Forth - the Array of data
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, android.R.id.text1, values);
// Assign adapter to ListView
listView.setAdapter(adapter);
// ListView Item Click Listener
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// ListView Clicked item index
itemPosition = position;
handler.post(goDeep);
}
});
}
private Runnable goDeep = new Runnable(){
public void run(){
new goDeep().execute("");
}
};
class goDeep extends AsyncTask<String, String, String>{
ProgressDialog mProgressDialog = new ProgressDialog(VODInterface.this);
String result="";
boolean failLoadVOD=false;
protected void onPreExecute(){
mProgressDialog.setMessage(getString(R.string.downloading));
mProgressDialog.setIndeterminate(true);
mProgressDialog.setCancelable(false);
mProgressDialog.show();
}
@Override
protected String doInBackground(String... arg0) {
// TODO Auto-generated method stub
//START check if servers are Ok
if(!Server.isOnline()){
Server.getAvailableServer();
Log.i("good", "");
}
if(!Server.isOnline()){
Log.i("WEW", "SERVERS are off");
return null;
}
//END check if servers are Ok
//START synchronize local database with online database
try{
if(ep.contains("downloaded")){
Log.i("localDatabase", "is full");
}
else{
Editor ed = ep.edit();
ed.putString("downloaded", "");
ed.commit();
//load data from database
if(!MainActivity.web.parseVODAndVODCategories()){
failLoadVOD=true;
}
}
}
catch(NullPointerException ee)
{
//lets go get datas from Tibodatabase
Editor ed = ep.edit();
ed.putString("downloaded", "");
ed.commit();
if(!MainActivity.web.parseVODAndVODCategories()){
failLoadVOD=true;
}
}
//END synchronize local database with online database
//START handle menus
if(!submenus) //MainMenu
{
if(itemPosition == 1){
//get all movies ordered by name
List<String> val = MainActivity.voddb.selectAllCategories();
values = new String[val.size()+1];
values[0] ="[...]";
for(int i=0;i<val.size();i++){
values[i+1] = val.get(i);
}
listviewVisibility = true;
}
else{
//show movies
listviewVisibility = false;
}
submenus = true;
}
else{
if(itemPosition == 0){
values = new String[] { "A..Z",
"Category",
"Most Rated",
"Most Watched",
"Recently"
};
submenus = false;
listviewVisibility = true;
}
else{
listviewVisibility = false;
}
}
//END handle menu
if(!listviewVisibility){
getData();
for(int i=0;i<vod.size();i++){
if(!FileExciste(vod.get(i).Icon)){
try{
Bitmap bmp ;
URL newurl = new URL(vod.get(i).Icon);
bmp = BitmapFactory.decodeStream(newurl.openConnection() .getInputStream());
saveImageToSD(bmp,vod.get(i).Icon);
Log.i(i+"", "done");
}
catch(Exception e){
Log.i("exciste", "exciste");
}
}
else{
Log.i(i+"", "exciste");
}
}
}
runOnUiThread(new Runnable() {
@Override
public void run() {
if(!listviewVisibility){
listView.setVisibility(View.GONE);
MovieView.setVisibility(View.VISIBLE);
populateMovieView();
}
else{
ArrayAdapter<String> adapter = new ArrayAdapter<String>(VODInterface.this,
android.R.layout.simple_list_item_1, android.R.id.text1, values);
listView.setAdapter(adapter);
}
}
});
mProgressDialog.dismiss();
return "";
}
protected void onPostExecute(){
//start adding to cache
super.onPostExecute("");
}
}
private void getData(){
vod = new ArrayList<VODObject>();
for(int i=1;i<MainActivity.voddb.getVODCount()+1;i++){
vod.add(MainActivity.voddb.getVOD(i+""));
if(vod.get(i-1).Icon.contains(" ")){
vod.get(i-1).Icon = vod.get(i-1).Icon.replaceAll(" ", "%20");
Log.i("u korrigjua", vod.get(i-1).Icon);
}
}
}
private void populateMovieView(){
gallery = (Gallery) findViewById(R.id.gallery1);
GalleryImageAdapter gia= new GalleryImageAdapter(this,vod);
gallery.setAdapter(gia);
gallery.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, final int position, long id) {
// show the selected Image
/*here is the problem
*
*----------------------------/
*/
try{
LayoutInflater factory = getLayoutInflater();
View view = factory.inflate(R.layout.listview2, null);
EditText title = (EditText) view.findViewById(R.id.editText2);
title.setText(vod.get(position).title);
TextView desc = (TextView) view.findViewById(R.id.editText4);
desc.setText(vod.get(position).description);
Log.i("info", title.getText()+" "+desc.getText());
}
catch(Exception ee){
Log.i("info", ee.getMessage()+" nnn");
}
/*----------------------*/
try{
imgview.setImageBitmap(getImageFromSD(vod.get(position).Icon));
}
catch(Exception ee){
imgview.setImageResource(R.drawable.untitled);
}
}
});
}
public static Bitmap getImageFromSD(String url){
String path = Environment.getExternalStorageDirectory().toString();
File imgFile = new File(path+"/"+WebHelper.getFilenameFromUrl(url));
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
return myBitmap;
}
private void saveImageToSD(Bitmap bmp,String url) throws IOException {
String path = Environment.getExternalStorageDirectory().toString();
OutputStream fOut = null;
File file = new File(path, "/"+WebHelper.getFilenameFromUrl(url));
fOut = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
fOut.flush();
fOut.close();
MediaStore.Images.Media.insertImage(getContentResolver(),file.getAbsolutePath(),file.getName (),file.getName());
}
private boolean FileExciste(String url){
String path = Environment.getExternalStorageDirectory().toString();
File file = new File(path, "/"+WebHelper.getFilenameFromUrl(url));
return file.exists();
}
这是我的XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/vod"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="top" >
<ListView
android:id="@+id/listView1"
android:layout_width="274dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginBottom="20dp"
android:layout_marginLeft="20dp"
android:layout_marginTop="20dp"
android:background="@color/translucent_bblack" >
</ListView>
<LinearLayout
android:id="@+id/movieView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/translucent_black"
android:orientation="vertical"
android:visibility="invisible" >
<Gallery
android:id="@+id/gallery1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:background="@color/translucent_bblack" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<ImageButton
android:id="@+id/imageView2"
android:layout_width="400dp"
android:layout_height="fill_parent"
android:layout_marginBottom="20dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:background="@drawable/bord" />
<LinearLayout
android:id="@+id/MovieDesc"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="20dp"
android:layout_marginRight="20dp"
android:background="@color/translucent_bblack"
android:orientation="vertical" >
<TextView
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginTop="30dp"
android:inputType="textPersonName"
android:text="Title:"
android:textColor="#FFFFFF"
android:textSize="20sp"
android:textStyle="bold" >
</TextView>
<TextView
android:id="@+id/editText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:textColor="#FFFFFF"
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="@+id/editText3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginTop="30dp"
android:text="Description:"
android:textColor="#FFFFFF"
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="@+id/editText4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:textColor="#FFFFFF"
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="@+id/editText5"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginTop="60dp"
android:text="Duration:"
android:textColor="#FFFFFF"
android:textSize="20sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
答案 0 :(得分：0)
将TextViews声明为字段，如ImageView ---- “imgview”，如下所示......
public ImageView imgview;
public TextView title;
public TextView desc;
将 onCreate 方法初始化为“imgview”
imgview = (ImageView)this.findViewById(R.id.imageView2);
title = (TextView) view.findViewById(R.id.editText2);
desc = (TextView) view.findViewById(R.id.editText4);
并按照以下方式更新 gallery.setOnItemClickListener 代码......
gallery.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, final int position, long id) {
title.setText(vod.get(position).title);
desc.setText(vod.get(position).description);
Log.i("info", title.getText()+" "+desc.getText());
imgview.setImageBitmap(getImageFromSD(vod.get(position).Icon));
}
});