Progress bar (Progressbar)

Progress bar (Progressbar)

Provide some of the following styles to change the appearance of the progress bar

@android: Style/widget.progressbar.horizontal (horizontal progress bar)

@android: style/widget.progressbar.inverse (normal size ring progress bar)

@android: Style/widget.progressbar.large (large loop progress bar)

@android: Style/widget.progressbar.large.inverse (large loop progress bar)

@android: Style/widget.progressbar.small (small loop progress bar)

@android: Style/widget.progressbar.small.inverse (small loop progress bar)

Common Properties:

Max: Set the maximum value of the progress bar

Progress: Sets the progress value for which the progress bar has completed

Progressdrawable: The Drawable object that sets the track for the progress bar (is an XML file)

Below we look directly at the code:

1.Activity

//progress bar Public classProgressbaractivityextendsActivity {PrivateProgressBar ProgressBarDefaultStyle1; PrivateProgressBar ProgressBarDefaultStyle2; Privatebutton button; PrivateHandler Handler =NewHandler () { Public voidhandlemessage (Message msg) {intFlag =Msg.arg1; if(Flag <= 100) {progressbardefaultstyle1.setprogress (flag); }            if(Flag <= 200) {progressbardefaultstyle2.setprogress (flag/2); }            if(flag==201) {progressbardefaultstyle1.setprogress (0); Progressbardefaultstyle2.setprogress (0); Button.setenabled (true);            Timertask.cancel ();    }        }    }; PrivateTimer timer =NewTimer (); PrivateSendmsgtimertask TimerTask =NewSendmsgtimertask (); @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);                Setcontentview (R.layout.progress_bar); ProgressBarDefaultStyle1=(ProgressBar) Findviewbyid (r.id.progressbardefaultstyle1id); ProgressBarDefaultStyle2=(ProgressBar) Findviewbyid (R.ID.PROGRESSBARDEFAULTSTYLE2ID); Button=(Button) Findviewbyid (R.id.buttonid); Button.setonclicklistener (NewView.onclicklistener () { Public voidOnClick (View v) {button.setenabled (false); Timer.schedule (TimerTask,5, 100);            }        }); }        classSendmsgtimertaskextendstimertask{intFlag = 0;  Public voidrun () {Message msg=NewMessage (); Msg.arg1= ++Flag;            Handler.sendmessage (msg); LOG.I ("Msg.arg1", "Send message:" +msg.arg1); }} @Overrideprotected voidOnDestroy () {Super. OnDestroy ();    Timer.cancel (); }    }

2.xml Layout file

<?xml version= "1.0" encoding= "Utf-8"? ><relativelayout xmlns:android= "Http://schemas.android.com/apk/res/android"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:padding= "5DP" > <!--define a normal-sized circular progress bar--<ProgressBar Android:id= "@+id/progressbarinversestyleid"style= "@android: Style/widget.progressbar.inverse"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"/> <!--define a large circular progress bar--<ProgressBar Android:id= "@+id/progressbarlargestyleid"style= "@android: Style/widget.progressbar.large"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_below= "@id/progressbarinversestyleid"/> <!--define a large circular progress bar-<ProgressBar Android:id= "@+id/progressbarlargeinversestyleid"style= "@android: Style/widget.progressbar.large.inverse"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_below= "@id/progressbarlargestyleid"/> <!--define a small loop progress bar-<ProgressBar Android:id= "@+id/progressbarsmallstyleid"style= "@android: Style/widget.progressbar.small"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_below= "@id/progressbarlargeinversestyleid"/> <!--define a small loop progress bar-<ProgressBar Android:id= "@+id/progressbarsmallinversestyleid"style= "@android: Style/widget.progressbar.small.inverse"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_below= "@id/progressbarsmallstyleid"/> <!--define a default style of horizontal progress bar--<ProgressBar Android:id= "@+id/progressbardefaultstyle1id"style= "@android: Style/widget.progressbar.horizontal"Android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"Android:layout_below= "@id/progressbarsmallinversestyleid"Android:max= "/>" <!--defines a horizontal progress bar for a specified style--<!--Bar_state is a picture state file---<ProgressBar Android:id= "@+id/progressbardefaultstyle2id"style= "@android: Style/widget.progressbar.horizontal"Android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"Android:layout_below= "@id/progressbardefaultstyle1id"Android:max= "100"android:progressdrawable= "@drawable/bar_state"/> <Button Android:id= "@+id/buttonid"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_below= "@id/progressbardefaultstyle2id"Android:text= "Analog time-consuming operation"/></relativelayout>

3. The layout file of the progress bar

<?xml version= "1.0" encoding= "Utf-8"? ><layer-list xmlns:android= "http://schemas.android.com/apk/res/ Android >    <!--define the background of the track--    <item android:id= "@android: Id/background" android:drawable= "@ Drawable/no "/>    <!--defining a successful image of the track--    <item android:id=" @android: id/progress "android:drawable=" @ Drawable/yes "/></layer-list>

4. Effect Display Chart

Progress bar (Progressbar)