android上傳圖片進度條

③ Android開發怎麼自定義繪制如下圖中這種進度條急

一）變換前背景 先來看看progressbar的屬性： 1 根據style="?android:attr/progressBarStyleHorizontal"，我們找到源碼中的stylexml 1 2 false 3 @android:drawable/progress_horizontal 4 @android:drawable/progress_indeterminate_horiAndroid開發怎麼自定義繪制如下圖中這種進度條？急

④ 怎樣實現在android實現帶進度條的上傳效果

用到以下兩個類就可實現帶進度條的文件上傳：

1、CustomMultiPartEntity extends MultipartEntity,

2、HttpMultipartPost extends AsyncTask

代碼如下：

import java.io.FilterOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.nio.charset.Charset;

import org.apache.http.entity.mime.HttpMultipartMode;

import org.apache.http.entity.mime.MultipartEntity;

public class CustomMultipartEntity extends MultipartEntity {

private final ProgressListener listener;

public CustomMultipartEntity(final ProgressListener listener) {

super();

this.listener = listener;

}

public CustomMultipartEntity(final HttpMultipartMode mode, final ProgressListener listener) {

super(mode);

this.listener = listener;

}

public CustomMultipartEntity(HttpMultipartMode mode, final String boundary,

final Charset charset, final ProgressListener listener) {

super(mode, boundary, charset);

this.listener = listener;

}

@Override

public void writeTo(final OutputStream outstream) throws IOException {

super.writeTo(new CountingOutputStream(outstream, this.listener));

}

public static interface ProgressListener {

void transferred(long num);

}

public static class CountingOutputStream extends FilterOutputStream {

private final ProgressListener listener;

private long transferred;

public CountingOutputStream(final OutputStream out, final ProgressListener listener) {

super(out);

this.listener = listener;

this.transferred = 0;

}

public void write(byte[] b, int off, int len) throws IOException {

out.write(b, off, len);

this.transferred += len;

this.listener.transferred(this.transferred);

}

public void write(int b) throws IOException {

out.write(b);

this.transferred++;

this.listener.transferred(this.transferred);

}

}

}

該類計算寫入的位元組數，我們需要在實現ProgressListener中的trasnfered()方法，更行進度條

public class HttpMultipartPost extends AsyncTask<HttpResponse, Integer, TypeUploadImage> {

ProgressDialogpd;

longtotalSize;

@Override

protectedvoidonPreExecute(){

pd= newProgressDialog(this);

pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

pd.setMessage("Uploading Picture...");

pd.setCancelable(false);

pd.show();

}

@Override

(HttpResponse... arg0) {

HttpClienthttpClient = newDefaultHttpClient();

HttpContexthttpContext = newBasicHttpContext();

HttpPosthttpPost = newHttpPost("http://herpderp.com/UploadImage.php");

try{

= newCustomMultipartEntity(

newProgressListener() {

@Override

public void transferred(longnum){

publishProgress((int) ((num / (float) totalSize) * 100));

}

});

// We use FileBody to transfer an image

multipartContent.addPart("uploaded_file", newFileBody(

newFile(m_userSelectedImagePath)));

totalSize= multipartContent.getContentLength();

// Send it

httpPost.setEntity(multipartContent);

HttpResponseresponse = httpClient.execute(httpPost, httpContext);

String serverResponse = EntityUtils.toString(response.getEntity());

ResponseFactoryrp = newResponseFactory(serverResponse);

return(TypeImage) rp.getData();

}

catch(Exception e) {

System.out.println(e);

}

returnnull;

}

@Override

protectedvoidonProgressUpdate(Integer... progress){

pd.setProgress((int) (progress[0]));

}

@Override

protectedvoidonPostExecute(TypeUploadImageui) {

pd.dismiss();

}

}

在 transferred()函數中調用publishProgress((int) ((num / (float) totalSize) * 100));

在onProgressUpdate()實現上傳進度的更新操作

⑤ android 進度條

頂部放一個ProgressBar或者ImageView，進入的時候開始轉圈，轉完了就隱藏起來，view.setVisibility(View.INVISIBLE);再把其他界面顯示出來就好了，view.setVisibility(View.VISIBLE);

⑥ android網路載入進度條怎麼使用

由於Android的界面更新只能通過自己的UI線程進行操作，所以我們需要用到Handler在進行更新界面的操作。

1、聲明變數
private Handler handler = new Handler();
private ProgressDialog progressDialog = null;

2、在開始進行網路連接時顯示進度條對話框
progressDialog = ProgressDialog.show(MyActivity.this, "請稍等...", "獲取數據中...", true);

3、在handler.post中進行界面更新
public void setListAdapter(){
handler.post(new Runnable() {
public void run() {
//將獲取到的數據更新到列表中
MyListView.setAdapter(saImageItems);
}
}
});

4、開個新的線程進行網路連接獲取數據
new Thread(new Runnable(){

@Override
public void run() {
// TODO Auto-generated method stub
//向伺服器請求數據
mapList=MyAPI.getAllDatas();
setListAdapter(mapList);
//更新完列表數據，則關閉對話框
progressDialog.dismiss();
}}).start();

整個過程就這樣完成了，下面是效果圖：

⑦ Android開發怎麼自定義繪制如下圖中這種進度條急需！在線等！

一）變換前背景

先來看看progressbar的屬性：
1. <ProgressBar
2. android:id="@+id/progressBar"
3. style="?android:attr/progressBarStyleHorizontal"
4. android:layout_width="match_parent"
5. android:layout_height="wrap_content"
6. android:layout_margin="5dip"
7. android:layout_toRightOf="@+id/progressBarV"
8. android:indeterminate="false"
9. android:padding="2dip"
10. android:progress="50" />
根據style="?android:attr/progressBarStyleHorizontal"，我們找到源碼中的style.xml
1. <style name="Widget.ProgressBar.Horizontal">
2. <item name="android:indeterminateOnly">false</item>
3. <item name="android:progressDrawable">@android:drawable/progress_horizontal</item>
4. <item name="android:indeterminateDrawable">@android:drawable/progress_indeterminate_horizontal</item>
5. <item name="android:minHeight">20dip</item>
6. <item name="android:maxHeight">20dip</item>
7. </style>
看到
<item name="android:progressDrawable">@android:drawable/progress_horizontal</item>
木有，繼續發掘源碼，找到drawable下面的progress_horizontal.xml，這就是我們今天的主角了：
1. <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
2.
3. <item android:id="@android:id/background">
4. <shape>
5. <corners android:radius="5dip" />
6. <gradient
7. android:startColor="#ff9d9e9d"
8. android:centerColor="#ff5a5d5a"
9. android:centerY="0.75"
10. android:endColor="#ff747674"
11. android:angle="270"
12. />
13. </shape>
14. </item>
15.
16. <item android:id="@android:id/secondaryProgress">
17. <clip>
18. <shape>
19. <corners android:radius="5dip" />
20. <gradient
21. android:startColor="#80ffd300"
22. android:centerColor="#80ffb600"
23. android:centerY="0.75"
24. android:endColor="#a0ffcb00"
25. android:angle="270"
26. />
27. </shape>
28. </clip>
29. </item>
30.
31. <item android:id="@android:id/progress">
32. <clip>
33. <shape>
34. <corners android:radius="5dip" />
35. <gradient
36. android:startColor="#ffffd300"
37. android:centerColor="#ffffb600"
38. android:centerY="0.75"
39. android:endColor="#ffffcb00"
40. android:angle="270"
41. />
42. </shape>
43. </clip>
44. </item>
45.
46. </layer-list>
看到android:id="@android:id/progress"木有，看到android:id="@android:id/secondaryProgress"木有
把這個文件復制到自己工程下的drawable，就可以隨心所欲的修改shape的屬性，漸變，圓角等等
那麼怎麼放一個圖片進去呢，ok，新建progress_horizontal1.xml：
1. <?xml version="1.0" encoding="utf-8"?>
2. <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
3.
4. <item android:id="@android:id/progress" android:drawable="@drawable/progressbar" />
5.
6. </layer-list>
在android:drawable中指定你處理好的圖片
然後回到布局中
1. <ProgressBar
2. android:id="@+id/progressBar1"
3. android:layout_width="match_parent"
4. android:layout_height="wrap_content"
5. android:layout_below="@+id/progressBar"
6. android:layout_margin="5dip"
7. android:layout_toRightOf="@+id/progressBarV"
8. android:background="@drawable/progress_bg"
9. android:indeterminate="false"
10. android:indeterminateOnly="false"
11. android:maxHeight="20dip"
12. android:minHeight="20dip"
13. android:padding="2dip"
14. android:progress="50"
15. android:progressDrawable="@drawable/progress_horizontal1" />
android:background="@drawable/progress_bg"指定背景
android:progressDrawable="@drawable/progress_horizontal1"前景使用上面的progress_horizontal1

要是還不行

你來我們群里說吧

這里是開發者互相學習交流的 有大神

讓他們給你解釋你的疑問 號 碼look at my n a m e.....

⑧ android關於進度條的問題，急求

安裝應用程序使用的進度條，都是「不確定」的，即屬性「android:indeterminateOnly=true」。因為具體的安裝是由PackageManagerService來完成的，無法確定的知道安裝進度。
-----------------------------------------------------------------------------------------------------
安卓精英團為你解答
安卓精英團歡迎各位精英加入！

⑨ Android 自定義扇形進度條。。。

大神搞的：https://github.com/Todd-Davies/ProgressWheel