我有一个活动，里面有一个视图寻呼机。我想从广播中更新寻呼机的一页。所以，我在寻呼机适配器中创建了一个广播接收器。但它没有收到广播。它是否与manifest.xml中的声明有关（因为它不在某些活动中）？甚至可以这样做吗？ 这是我在寻呼机适配器中的工作：
public Object instantiateItem(View collection, int position) {
try {
searchBox = (EditText) activity.findViewById(R.id.searchBox);
searchButton = (ImageView) activity.findViewById(R.id.searchButton);
if (position == 0) {
v1 = Inflater.inflate(R.layout.activity_search, null);
listOfSearch = (GridView) v1.findViewById(R.id.list_search);
searchImage = (ImageView) v1.findViewById(R.id.searchImage);
prb = (ProgressBar) v1.findViewById(R.id.progress_bar);
errorMessage = (TextView) v1.findViewById(R.id.errorMsg);
searchImage.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
searchBox.requestFocus();
imm.showSoftInput(searchBox,
InputMethodManager.SHOW_IMPLICIT);
}
});
searchButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
imm.hideSoftInputFromWindow(searchBox.getWindowToken(),
0);
errorMessage.setText("");
searchImage.setVisibility(View.GONE);
searchButton.setOnClickListener(null);
listOfSearch.setAdapter(null);
prb.setVisibility(View.VISIBLE);
new getVideos().execute();
}
});
}
if (position == 1) {
receiverl = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getExtras().getInt("running") == 1) {
int progress = intent.getExtras()
.getInt("progress");
DownloadView.setVisibility(View.VISIBLE);
dName.setText(intent.getExtras().getString("name"));
pBar.setProgress(intent.getExtras().getInt(
"progress"));
dPercentage.setText(progress + " %");
dQueue.setText("In queue: "
+ intent.getExtras().getInt("queue"));
if (progress >= 100) {
apg.setInDownload(false);
DownloadView.setVisibility(View.GONE);
getSD();
vla = new ViewListAdapter(activity, list,
list2, list3, send);
listOfDownloads.setAdapter(vla);
}
} else {
DownloadView.setVisibility(View.GONE);
}
}
};
v1 = Inflater.inflate(R.layout.activity_downloads, null);
DownloadView = (FrameLayout) v1.findViewById(R.id.downloadView);
dName = (TextView) v1.findViewById(R.id.nam);
pBar = (ProgressBar) v1.findViewById(R.id.pbb);
dPercentage = (TextView) v1.findViewById(R.id.prcent);
dQueue = (TextView) v1.findViewById(R.id.queue);
listOfDownloads = (GridView) v1
.findViewById(R.id.list_downloads);
errorText = (TextView) v1.findViewById(R.id.errorText);
File file = new File(Environment.getExternalStorageDirectory()
+ File.separator + "Video/VidBoxLite");
if (!file.exists()) {
file.mkdirs();
}
getSD();
if (list == null) {
errorText.setText("No storage found.");
} else if (list.length == 0) {
errorText.setText("No videos found.");
} else {
vla = new ViewListAdapter(activity, list, list2, list3,
send);
listOfDownloads.setAdapter(vla);
vla.notifyDataSetChanged();
listOfDownloads.setLongClickable(true);
listOfDownloads
.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(
AdapterView<?> parent, View v,
int position, long id) {
forP = position;
LayoutInflater inflater = LayoutInflater
.from(activity);
View layout = inflater.inflate(
R.layout.downloaded_video_options,
null);
ListView oka = (ListView) layout
.findViewById(R.id.option);
ArrayAdapter<String> adp = new ArrayAdapter<String>(
activity,
android.R.layout.select_dialog_item);
adp.add("Delete");
adp.add("Share");
adp.add("Cancel");
oka.setAdapter(adp);
oka.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(
AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
if (arg2 == 2)
alertDD.dismiss();
if (arg2 == 1) {
Intent sendIntent = new Intent();
sendIntent.setType("video/*");
sendIntent
.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(
Intent.EXTRA_STREAM,
Uri.parse(list2[forP]));
// startActivity(Intent.createChooser(sendIntent));
activity.startActivity(Intent
.createChooser(
sendIntent,
"Share video via:"));
alertDD.dismiss();
}
if (arg2 == 0) {
alertDD.dismiss();
File fle = new File(list2[forP]);
if (fle.exists()) {
fle.delete();
getSD();
if (list == null) {
errorText
.setText("No storage found.");
} else if (list.length == 0) {
errorText
.setText("No videos found.");
} else {
vla = new ViewListAdapter(
activity, list,
list2, list3,
send);
listOfDownloads
.setAdapter(vla);
}
}
}
}
});
AlertDialog.Builder alertD = new AlertDialog.Builder(
activity);
alertD.setView(layout).setCancelable(false);
alertDD = alertD.create();
alertDD.show();
return true;
}
});
listOfDownloads
.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent,
View view, int position, long id) {
if (position < send) {
Uri ttt = Uri.parse(Environment
.getExternalStorageDirectory()
+ File.separator
+ "Video/VidBox/Lite/"
+ list[position]);
Intent intent = new Intent(
Intent.ACTION_VIEW, ttt);
intent.setDataAndType(
ttt,
"video/"
+ list[position]
.substring(
list[position]
.length() - 3,
list[position]
.length()));
activity.startActivity(intent);
}
}
});
}
}
((ViewPager) collection).addView(v1, 0);
} catch (Exception e) {
}
return v1;
}
答案 0 :(得分：0)
您是否忘了注册接收器？您可以在清单文件中或通过调用
来执行此操作
activity.registerReceiver（接收机）;方法。
你应该注意，如果你通过调用activity.registerReceiver（receiver）注册它;
当不再需要接收器时，你也必须取消注册它。