Android custom View combination control ---- LED digital clock

Android custom View combination control ---- LED digital clock

First

LEDView effect.

Previously, I saw a blog using two textviews to achieve this effect. So I want to use a custom control to implement an LEDView, which can be used directly.

The combination of controls, the two textviews stacked together, and then use the digital-7.ttf font to display data, so as to achieve the LED effect. The Code is as follows:

LEDView. class

 

Package ione. zy. demo; import java. io. file; import java. util. calendar; import java. util. date; import java. util. timeZone; import android. annotation. suppressLint; import android. content. context; import android. content. res. assetManager; import android. graphics. typeface; import android. OS. handler; import android. util. attributeSet; import android. view. layoutInflater; import android. view. view; import android. widget. linearLayout; import android. widget. textView; public class LEDView extends LinearLayout {private TextView timeView; private TextView bgView; private static final String FONT_DIGITAL_7 = fonts + File. separator + digital-7.ttf; private static final String DATE_FORMAT = % 02d: % 02d: % 02d; private static final int REFRESH_DELAY = 500; private final Handler mHandler = new Handler (); private final Runnable mTimeRefresher = new Runnable () {@ Overridepublic void run () {Calendar ar calendar = Calendar ar. getInstance (TimeZone. getTimeZone (GMT + 8); final Date d = new Date (); calendar. setTime (d); timeView. setText (String. format (DATE_FORMAT, calendar. get (Calendar. HOUR), calendar. get (Calendar. MINUTE), calendar. get (Calendar. SECOND); mHandler. postDelayed (this, REFRESH_DELAY) ;};@ SuppressLint (NewApi) public LEDView (Context context, AttributeSet attrs, int defStyle) {super (context, attrs, defStyle ); init (context);} public LEDView (Context context, AttributeSet attrs) {super (context, attrs); init (context);} public LEDView (Context context) {super (context); init (context);} private void init (Context context) {LayoutInflater layoutInflater = LayoutInflater. from (context); View view = layoutInflater. inflate (R. layout. ledview, this); timeView = (TextView) view. findViewById (R. id. ledview_clock_time); bgView = (TextView) view. findViewById (R. id. ledview_clock_bg); AssetManager assets = context. getAssets (); final Typeface font = Typeface. createFromAsset (assets, FONT_DIGITAL_7); timeView. setTypeface (font); // set the bgView font. setTypeface (font); // set the font} public void start () {mHandler. post (mTimeRefresher);} public void stop () {mHandler. removeCallbacks (mTimeRefresher );}}

Ledview. xml file

 

 

 

 

Use Demo

 

package ione.zy.demo;import android.os.Build;import android.os.Bundle;import android.view.Menu;import android.annotation.SuppressLint;import android.annotation.TargetApi;import android.app.ActionBar;import android.app.Activity;@TargetApi(Build.VERSION_CODES.HONEYCOMB)public class LEDActivity extends Activity {private LEDView ledView;@SuppressLint(NewApi)@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_led);ledView = (LEDView) findViewById(R.id.ledview);  ActionBar actionBar = getActionBar();    actionBar.setDisplayHomeAsUpEnabled(true); }@Overrideprotected void onResume() {super.onResume();ledView.start();}@Overrideprotected void onStop() {super.onStop();ledView.stop();}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.activity_led, menu);return true;}}

Activity_led.xml