android下載進度
⑴ android studio 一打開項目下方就又有個下載進度條,每次打開都要下載,怎麼回事啊
如果是第一次導入的項目,她會去網路倉庫下載你build.gride里導入的包比如http請求的,或者第三方組件的包。會有各種類似下載的進度條。之後打開都是檢查版本什麼的,還有初始化項目,也會耗費一定的時間
⑵ android中如何獲取listview中其中一個Item中的進度條對象來更新下載進度
public class MainActivity extends Activity
{
private ListView listView;
private DownloadAdapter adapter;
private List<String> lists = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
for (int i = 0; i < 10; i++)
{
lists.add("button" + i);
}
listView = (ListView) findViewById(R.id.listView1);
adapter = new DownloadAdapter(this, lists);
listView.setAdapter(adapter);
}
}
public class DownloadAdapter extends BaseAdapter
{
private Context context;
private List<String> list;
private LayoutInflater inflater;
public DownloadAdapter(Context context, List<String> list)
{
this.context = context;
this.list = list;
inflater = LayoutInflater.from(context);
}
@Override
public int getCount()
{
// TODO Auto-generated method stub
return list.size();
}
@Override
public Object getItem(int position)
{
// TODO Auto-generated method stub
return list.get(position);
}
@Override
public long getItemId(int position)
{
// TODO Auto-generated method stub
return list.get(position).hashCode();
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
MyHolder myHolder = null;
if (convertView == null)
{
convertView = inflater.inflate(R.layout.item, null);
myHolder = new MyHolder();
myHolder.bar = (ProgressBar) convertView
.findViewById(R.id.progressBar1);
myHolder.button = (Button) convertView.findViewById(R.id.button1);
convertView.setTag(myHolder);
}
else
{
myHolder = (MyHolder) convertView.getTag();
}
myHolder.button.setText(list.get(position));
MyDownLoadThread down = new MyDownLoadThread(myHolder.bar,
myHolder.button);
myHolder.button.setOnClickListener(down);
return convertView;
}
class MyHolder
{
private ProgressBar bar;
private Button button;
}
public class MyDownLoadThread extends Thread implements OnClickListener
{
private ProgressBar pBar;
private Button btn;
private int index = 0;
private boolean isStart = false;
private Handler handler = new Handler()
{
@Override
public void handleMessage(Message msg)
{
pBar.setProgress(index);
}
};
public MyDownLoadThread(ProgressBar pBar, Button btn)
{
this.pBar = pBar;
this.btn = btn;
}
@Override
public void onClick(View v)
{
if (!isStart)
{
isStart = true;
btn.setText("開始下載");
pBar.setMax(100);
this.start();
}
}
@Override
public void run()
{
while (index <= 100)
{
index++;
handler.sendEmptyMessage(0);
try
{
sleep(1000);
}
catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
if (index > 100)
{
btn.setText("下載完成");
break;
}
}
}
}
}
簡單的demo 僅供參考,希望對你有用
⑶ 安卓開發時,下載文件時進度條線程阻塞問題(具體如下)
自己debug看一下,在循環最後sleep一下
⑷ android通知欄中的下載進度條範例
直接放子線程里 然後handler接然後加入進度條 在每次接的數據上顯示出來進度
⑸ Android 下載進度條問題。
conn.setConnectTimeout(5000);
// 獲取到文件的大小
pd.setMax(conn.getContentLength());
// 獲取當前下載量
pd.setProgress(total);
把pd.setProgress(total);寫在while語句里循環更新就OK
⑹ 為什麼在android市場下載不了軟體,進度總是0%
主要是網路原因。如果你是用wlan,沒有限制;如果你是用蜂窩網,看看設置里有個僅wlan下載。
⑺ 誰知道怎樣在安卓手機通知欄里顯示下載進度條啊
通知欄顯示所用到的布局文件content_view.xml
主運行類:
packageyyy.testandroid4;
importjava.util.Timer;
importjava.util.TimerTask;
importandroid.app.Activity;
importandroid.app.AlertDialog.Builder;
importandroid.app.Notification;
importandroid.app.NotificationManager;
importandroid.app.PendingIntent;
importandroid.content.DialogInterface;
importandroid.content.Intent;
importandroid.content.pm.PackageManager.NameNotFoundException;
importandroid.os.Bundle;
importandroid.os.Handler;
importandroid.os.Message;
importandroid.view.View;
importandroid.view.View.OnClickListener;
importandroid.widget.Button;
importandroid.widget.RemoteViews;
importandroid.widget.Toast;
{
privateHandlerhandler=newHandler(){
@Override
publicvoidhandleMessage(Messagemsg){
//TODOAuto-generatedmethodstub
super.handleMessage(msg);
switch(msg.what){
case0:
notif.contentView.setTextViewText(R.id.content_view_text1,len+"%");
notif.contentView.setProgressBar(R.id.content_view_progress,100,len,false);
manager.notify(0,notif);
break;
case1:
Toast.makeText(TestAndroid4Activity.this,"下載完成",0).show();
break;
default:
break;
}
}
};
privateButtonupdate,cancel;
privateintlocalVersion,serverVersion;
privateintlen;
;
privateNotificationnotif;
/**.*/
@Override
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
update=(Button)findViewById(R.id.update);
update.setOnClickListener(newOnClickListener(){
@Override
publicvoidonClick(Viewarg0){
//TODOAuto-generatedmethodstub
//點擊通知欄後打開的activity
Intentintent=newIntent(TestAndroid4Activity.this,OtherActivity.class);
PendingIntentpIntent=PendingIntent.getActivity(TestAndroid4Activity.this,0,intent,0);
manager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
notif=newNotification();
notif.icon=R.drawable.logo;
notif.tickerText="新通知";
//通知欄顯示所用到的布局文件
notif.contentView=newRemoteViews(getPackageName(),R.layout.content_view);
notif.contentIntent=pIntent;
manager.notify(0,notif);
newDownLoadThread().start();
}
});
}
}
{
privateTimertimer=newTimer();
@Override
publicvoidrun(){
//TODOAuto-generatedmethodstub
super.run();
timer.schele(newTimerTask(){
@Override
publicvoidrun(){
//TODOAuto-generatedmethodstub
Messagemsg=newMessage();
msg.what=0;
msg.obj=len;
handler.sendMessage(msg);
if(len==100){
timer.cancel();
handler.sendEmptyMessage(1);
}
}
},0,1000);
len=0;
try{
while(len<100){
len++;
Thread.sleep(1000);
}
}catch(InterruptedExceptione){
//TODOAuto-generatedcatchblock
e.printStackTrace();
}
}
}
}
⑻ android gridview 的每個item都有一個下載進度條,當activity翻頁再返回來,進度條就沒有進度顯示了
用一個map記錄一下 用position做key 然後每次get view的時候設置一下 進度條的值
⑼ android下載界面進度條接續及更新問題
用handler更新ui, 也就是多線程
⑽ 安卓手機下載APP進度不動之前可以下載,以前可以,就是最近的事,求知道的大神說下,求解決
退出重啟一下手機。如果不行。下載一個手機迅雷。