android上传图片进度条

③ Android开发怎么自定义绘制如下图中这种进度条急

一）变换前背景 先来看看progressbar的属性： 1 根据style="?android:attr/progressBarStyleHorizontal"，我们找到源码中的stylexml 1 2 false 3 @android:drawable/progress_horizontal 4 @android:drawable/progress_indeterminate_horiAndroid开发怎么自定义绘制如下图中这种进度条？急

④ 怎样实现在android实现带进度条的上传效果

用到以下两个类就可实现带进度条的文件上传：

1、CustomMultiPartEntity extends MultipartEntity,

2、HttpMultipartPost extends AsyncTask

代码如下：

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);

}

}

}

该类计算写入的字节数，我们需要在实现ProgressListener中的trasnfered()方法，更行进度条

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()函数中调用publishProgress((int) ((num / (float) totalSize) * 100));

在onProgressUpdate()实现上传进度的更新操作

⑤ android 进度条

顶部放一个ProgressBar或者ImageView，进入的时候开始转圈，转完了就隐藏起来，view.setVisibility(View.INVISIBLE);再把其他界面显示出来就好了，view.setVisibility(View.VISIBLE);

⑥ android网络加载进度条怎么使用

由于Android的界面更新只能通过自己的UI线程进行操作，所以我们需要用到Handler在进行更新界面的操作。

1、声明变量
private Handler handler = new Handler();
private ProgressDialog progressDialog = null;

2、在开始进行网络连接时显示进度条对话框
progressDialog = ProgressDialog.show(MyActivity.this, "请稍等...", "获取数据中...", true);

3、在handler.post中进行界面更新
public void setListAdapter(){
handler.post(new Runnable() {
public void run() {
//将获取到的数据更新到列表中
MyListView.setAdapter(saImageItems);
}
}
});

4、开个新的线程进行网络连接获取数据
new Thread(new Runnable(){

@Override
public void run() {
// TODO Auto-generated method stub
//向服务器请求数据
mapList=MyAPI.getAllDatas();
setListAdapter(mapList);
//更新完列表数据，则关闭对话框
progressDialog.dismiss();
}}).start();

整个过程就这样完成了，下面是效果图：

⑦ Android开发怎么自定义绘制如下图中这种进度条急需！在线等！

一）变换前背景

先来看看progressbar的属性：
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" />
根据style="?android:attr/progressBarStyleHorizontal"，我们找到源码中的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，继续发掘源码，找到drawable下面的progress_horizontal.xml，这就是我们今天的主角了：
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
把这个文件复制到自己工程下的drawable，就可以随心所欲的修改shape的属性，渐变，圆角等等
那么怎么放一个图片进去呢，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中指定你处理好的图片
然后回到布局中
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

要是还不行

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⑧ android关于进度条的问题，急求

安装应用程序使用的进度条，都是“不确定”的，即属性“android:indeterminateOnly=true”。因为具体的安装是由PackageManagerService来完成的，无法确定的知道安装进度。
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⑨ Android 自定义扇形进度条。。。

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