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怎么在Android中實現(xiàn)切換主題?相信很多沒有經(jīng)驗的人對此束手無策,為此本文總結(jié)了問題出現(xiàn)的原因和解決方法,通過這篇文章希望你能解決這個問題。
創(chuàng)建ColorTheme類用于主題更換:
public class ColorTheme { AppCompatActivity ap; public ColorTheme(AppCompatActivity _ap){ap=_ap;} public void updateTheme(int _data){ String data=Integer.toString(_data); FileOutputStream out=null; BufferedWriter writer=null; try{ out=ap.openFileOutput("data",Context.MODE_PRIVATE); writer=new BufferedWriter(new OutputStreamWriter(out)); writer.write(data); }catch (IOException e){ e.printStackTrace(); }finally { try { if(writer!=null){ writer.close(); } }catch (IOException e){ e.printStackTrace(); } } } public void loadTheme(){ FileInputStream in=null; BufferedReader reader= null; StringBuilder content=new StringBuilder(); try{ in=ap.openFileInput("data"); reader=new BufferedReader(new InputStreamReader(in)); String line=""; while((line=reader.readLine())!=null){ content.append(line); } ap.setTheme(Integer.parseInt(content.toString())); }catch (IOException e){ e.printStackTrace(); }finally { if(reader!=null){ try{ reader.close(); }catch (IOException e){ e.printStackTrace(); } } } } }
在oncreate中調(diào)用:
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); final ColorTheme newTheme = new ColorTheme(this); newTheme.loadTheme(); setContentView(R.layout.activity_main);
重點:
要現(xiàn)在res/value/style中設(shè)計主題的樣式:
這里是我設(shè)的的四種樣式:
<?xml version="1.0"?> <resources> <!-- Base application theme. --> -<style parent="Theme.AppCompat.Light.NoActionBar" name="AppTheme"> <!-- Customize your theme here. --> <item name="colorPrimary">@color/colorPrimary</item> <item name="colorPrimaryDark">@color/colorPrimaryDark</item> <item name="colorAccent">@color/colorAccent</item> <item name="colorButtonNormal">@color/colorAccent</item> </style> -<style parent="Theme.AppCompat.Light.NoActionBar" name="Blue"> <!-- Customize your theme here. --> <item name="colorPrimary">@color/blue</item> <item name="colorPrimaryDark">@color/blue</item> <item name="colorAccent">@color/blue</item> <item name="colorButtonNormal">@color/blue</item> </style> -<style parent="Theme.AppCompat.Light.NoActionBar" name="Pink"> <!-- Customize your theme here. --> <item name="colorPrimary">@color/pink</item> <item name="colorPrimaryDark">@color/pink</item> <item name="colorAccent">@color/pink</item> <item name="colorButtonNormal">@color/pink</item> </style> -<style parent="Theme.AppCompat.Light.NoActionBar" name="Turquoise"> <!-- Customize your theme here. --> <item name="colorPrimary">@color/turquoise</item> <item name="colorPrimaryDark">@color/turquoise</item> <item name="colorAccent">@color/turquoise</item> <item name="colorButtonNormal">@color/turquoise</item> </style> </resources>
別忘了在color里定義的顏色:
<?xml version="1.0" encoding="UTF-8"?> <resources> <color name="colorText">#ffffffff</color> <color name="hintText">#bfffffff</color> <color name="colorPrimary">#de4037</color> <color name="colorPrimaryDark">#de4037</color> <color name="colorAccent">#de4037</color> <!--注冊界面提示紅色--> <color name="hintRed">#de4037</color> <color name="blue">#1e50a2</color> <color name="pink">#fa7299</color> <color name="turquoise">#008577</color> </resources>
看完上述內(nèi)容,你們掌握怎么在Android中實現(xiàn)切換主題的方法了嗎?如果還想學(xué)到更多技能或想了解更多相關(guān)內(nèi)容,歡迎關(guān)注億速云行業(yè)資訊頻道,感謝各位的閱讀!
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