Use of Android Controls ProgressBar

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1 Introduction

ProgressBar can show progress. Figure it is a part of the black ProgressBar, in FIG Second progress of the ProgressBar 40% ( ~~examples of possible bit ugly~~ ).

Figure II
The common attributes ProgressBar xml:
max: maximum value of the specified progress bar.
progress: Specifies default value for the progress bar, the code can be set by the progress setProgress () method.
progressDrawable: Specifies the progress of the picture, not with the general picture, use the hierarchical graph, see examples of the latter.
style: style specifies the shape of a progress bar. progressBarStyleHorizontal represents horizontal shape, progressBarStyle shape indicates a circle. If the style is progressBarStyle a circle shape, and set the maximum value of the schedule will be invalid.

2. Examples

Here is an example of the hierarchical graph. The first item specified background, here designated a Shape rounded, almost black (as Figure 1). The second item displays the progress of the specified color or picture.

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/background">
        <shape>
            <solid android:color="#282929"/>
            <corners android:radius="5dp"/>
        </shape>
    </item>
    <item android:id="@android:id/progress">
        <clip>
            <color android:color="#FA9601"/>
        </clip>
    </item>
</layer-list>

The following code uses the ProgressBar is xml.

<ProgressBar
        android:id="@+id/pb_demo"
        android:layout_width="match_parent"
        android:layout_height="20dp"
        android:max="100"
        android:progress="0"
        android:progressDrawable="@drawable/custom_process_bar_yellow"
        style="?android:progressBarStyleHorizontal"/>