应用显示黑屏? [英] Application showing black screen?
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问题描述
我是执行一个Android应用程序。我使用一个活动Web服务。我显示一个进度对话框,直到它加载第二个活动。但它并没有显示整个时间,并显示黑屏了time.It看起来像应用程序挂起。我该怎么办?我浪费了我的三个日子。我使用的AsyncTask这些过程。请帮我。
保护无效onListItemClick(ListView中升,视图V,最终诠释的位置,
长ID){
super.onListItemClick(L,V,位置ID); progressDialog = ProgressDialog.show(ProjectListActivity.this,
请稍候...,载入中...); 新的Thread(){ 公共无效的run(){ 尝试{
字符串项目= titles.get(位置 - 1); performBackgroundProcess(项目); }赶上(例外五){ Log.e(标签,e.getMessage()); } progressDialog.dismiss();
} }。开始();} 私人无效performBackgroundProcess(字符串项目){ 字符串spaceId = NULL;
字符串SPACENAME = NULL;
/ *
*为(太空空间:空格){
*如果(space.getName()。equalsIgnoreCase((字符串)((的TextView)
* v)的.getText())){spaceId = space.getId(); }}
* /
对于(太空空间:空格){ 如果(project.equals(space.getName())){ 时讯=空间;
} } spaceId = newSpace.getId();
SPACENAME = newSpace.getName(); / *
*意向意图=新意图(这一点,SpaceComponentsActivity.class);
* intent.putExtra(spaceId,spaceId); intent.putExtra(tabId,0);
* intent.putExtra(类名,TicketListActivity); TabSettings TS =
*新TabSettings(); ts.setSelTab(1); this.startActivity(意向);
* /
意向意图=新意图(这一点,SpaceComponentsActivity.class);
intent.putExtra(spaceId,spaceId);
intent.putExtra(tabId,0);
intent.putExtra(SPACENAME,SPACENAME); // intent.putExtra(类名,TicketListActivity);
TabSettings TS =新TabSettings();
ts.setSelTab(0);
ts.setSelTabClass(TicketListActivity);
this.startActivity(意向); / *
* Toast.makeText(getApplicationContext(),((TextView的)V).getText()
* Toast.LENGTH_SHORT).show();
* /
}
解决方案
有关你的情况使用本...
发 progressDialog
公众对你的活动
progressDialog = ProgressDialog.show(ProjectListActivity.this,
请稍候...,载入中...);新的Thread(){ 公共无效的run(){ 尝试{
字符串项目= titles.get(位置 - 1); performBackgroundProcess(项目);
ProjectListActivity.this.runOnUiThread(新的Runnable(){ @覆盖
公共无效的run(){
progressDialog.dismiss(); }
}); }赶上(例外五){ Log.e(标签,e.getMessage()); }
}}。开始();
但它不是一个很好的计算策略使用 AsyncTask的。
I am implementation an android application. I am using web service on one activity. I am showing a progress dialog until it loads second Activity. But it does not show for whole time and shows black screen for a time.It looks like application hang. What should i do? i wasted my three day. I am using asynctask for these process. Please help me .
protected void onListItemClick(ListView l, View v, final int position,
long id) {
super.onListItemClick(l, v, position, id);
progressDialog = ProgressDialog.show(ProjectListActivity.this,
"Please wait...", "Loading...");
new Thread() {
public void run() {
try {
String project = titles.get(position - 1);
performBackgroundProcess(project);
} catch (Exception e) {
Log.e("tag", e.getMessage());
}
progressDialog.dismiss();
}
}.start();
}
private void performBackgroundProcess(String project) {
String spaceId = null;
String spaceName = null;
/*
* for (Space space : spaces){
* if(space.getName().equalsIgnoreCase((String) ((TextView)
* v).getText())){ spaceId = space.getId(); } }
*/
for (Space space : spaces) {
if (project.equals(space.getName())) {
newSpace = space;
}
}
spaceId = newSpace.getId();
spaceName = newSpace.getName();
/*
* Intent intent = new Intent(this, SpaceComponentsActivity.class);
* intent.putExtra("spaceId", spaceId); intent.putExtra("tabId", 0);
* intent.putExtra("className", "TicketListActivity"); TabSettings ts =
* new TabSettings(); ts.setSelTab(1); this.startActivity(intent);
*/
Intent intent = new Intent(this, SpaceComponentsActivity.class);
intent.putExtra("spaceId", spaceId);
intent.putExtra("tabId", 0);
intent.putExtra("spaceName", spaceName);
// intent.putExtra("className", "TicketListActivity");
TabSettings ts = new TabSettings();
ts.setSelTab(0);
ts.setSelTabClass("TicketListActivity");
this.startActivity(intent);
/*
* Toast.makeText(getApplicationContext(), ((TextView) v).getText(),
* Toast.LENGTH_SHORT).show();
*/
}
解决方案
for your case use this...
made progressDialog
public to your Activity
progressDialog = ProgressDialog.show(ProjectListActivity.this,
"Please wait...", "Loading...");
new Thread() {
public void run() {
try {
String project = titles.get(position - 1);
performBackgroundProcess(project);
ProjectListActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
progressDialog.dismiss();
}
});
} catch (Exception e) {
Log.e("tag", e.getMessage());
}
}
}.start();
but it is not a good approch use AsyncTask.
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