ProgressBar 进度条设置百分比显示

rawable/progressbar

 <layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

     <item android:id="@android:id/secondaryProgress">
         <clip>
             <shape>
                 <corners android:radius="5dip" />
                 <gradient
                     android:angle="0"
                     android:centerColor="#80ffb600"
                     android:centerY="0.75"
                     android:endColor="#a0ffcb00"
                     android:startColor="#80ffd300" />
             </shape>
         </clip>
     </item>
     <item android:id="@android:id/progress">
         <clip>
             <shape>
                 <corners android:radius="5dip" />
                 <gradient
                     android:angle="0"
                     android:endColor="#8000ff00"
                     android:startColor="#80ff0000" />
             </shape>
         </clip>
     </item>

 </layer-list>

 <ProgressBar
         android:id="@+id/ProgressBar"
         style="?android:attr/progressBarStyleHorizontal"
         android:layout_width="fill_parent"
         android:layout_height="5dp"
         android:layout_marginLeft="20dp"
         android:layout_marginRight="30dp"
         android:layout_marginTop="5dp"
         android:max="100"
         android:progressDrawable="@drawable/progressbar" />

       @Override
     public View getView(int position, View convertView, ViewGroup parent) {
         ChildHolder childHolder = null;
         if(convertView == null){
             childHolder = new ChildHolder();
             convertView = View.inflate(mcontext, R.layout.item_chat, null);
             childHolder.ProgressBar = (ProgressBar) convertView.findViewById(R.id.ProgressBar);
             convertView.setTag(childHolder);
         }else {
             childHolder = (ChildHolder) convertView.getTag();
         }
         // RecordObj 实体对象
         RecordObj rd = mlist.get(position);

         int total_count = 0;
         for (int i = 0; i < mlist.size(); i++) {
             int count = mlist.get(i).getCount();
             total_count += count;
         }
         DecimalFormat df1 = new DecimalFormat("0.0000");
         String str_percent = df1.format((float)rd.getCount() / total_count);
         float percent =Float.parseFloat(str_percent) * 100;
         DecimalFormat df2 = new DecimalFormat("0.00");
         String percents = df2.format(percent) + "%";
         int value = childHolder.ProgressBar.getProgress();
         if (value == 0) {
             doProgress(percent , childHolder.ProgressBar);
         } else {
             childHolder.ProgressBar.setProgress((int)percent);
         }
         return convertView;
     }