白天夜间模式切换（2）

来源：互联网发布：怎样和淘宝卖家聊天编辑：程序博客网时间：2024/06/11 20:48
<span style="font-size:18px;"><code class="hljs java has-numbering"><span class="hljs-keyword">import</span> android.support.v7.app.ActionBarActivity;<span class="hljs-keyword">import</span> android.content.Context;<span class="hljs-keyword">import</span> android.content.SharedPreferences;<span class="hljs-keyword">import</span> android.content.SharedPreferences.Editor;<span class="hljs-keyword">import</span> android.graphics.Color;<span class="hljs-keyword">import</span> android.graphics.PixelFormat;<span class="hljs-keyword">import</span> android.os.Bundle;<span class="hljs-keyword">import</span> android.view.Gravity;<span class="hljs-keyword">import</span> android.view.View;<span class="hljs-keyword">import</span> android.view.View.OnClickListener;<span class="hljs-keyword">import</span> android.view.WindowManager;<span class="hljs-keyword">import</span> android.view.WindowManager.LayoutParams;<span class="hljs-keyword">import</span> android.widget.Button;<span class="hljs-keyword">import</span> android.widget.TextView;<span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">MainActivity</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">ActionBarActivity</span> {</span>    <span class="hljs-comment">// 获得窗体的管理者</span>    <span class="hljs-keyword">private</span> WindowManager mWindowManager;    <span class="hljs-keyword">private</span> Button dayandnight;    <span class="hljs-keyword">private</span> SharedPreferences skinSp;    <span class="hljs-keyword">private</span> <span class="hljs-keyword">int</span> flag = <span class="hljs-number">0</span>;    <span class="hljs-keyword">private</span> View myView;    <span class="hljs-keyword">private</span> <span class="hljs-keyword">final</span> <span class="hljs-keyword">static</span> String DAY = <span class="hljs-string">"day"</span>;    <span class="hljs-keyword">private</span> <span class="hljs-keyword">final</span> <span class="hljs-keyword">static</span> String NIGHT = <span class="hljs-string">"night"</span>;    <span class="hljs-annotation">@Override</span>    <span class="hljs-keyword">protected</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onCreate</span>(Bundle savedInstanceState) {        <span class="hljs-keyword">super</span>.onCreate(savedInstanceState);        <span class="hljs-comment">// 获得系统服务的窗体服务 在加载视图之前实现</span>        mWindowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);<span class="hljs-comment">// 根据上下文获得窗体的服务</span>        setContentView(R.layout.activity_main);        init();    }    <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">init</span>() {        <span class="hljs-comment">// 获得轻量级存储类</span>        skinSp = <span class="hljs-keyword">this</span>.getSharedPreferences(<span class="hljs-string">"skinchange"</span>, MODE_PRIVATE);<span class="hljs-comment">// 私有模式</span>        dayandnight = (Button) findViewById(R.id.dayandnight);        dayandnight.setOnClickListener(<span class="hljs-keyword">new</span> OnClickListener() {            <span class="hljs-annotation">@Override</span>            <span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onClick</span>(View v) {                <span class="hljs-keyword">if</span> (flag % <span class="hljs-number">2</span> == <span class="hljs-number">0</span>) {<span class="hljs-comment">// 这个是白天的模式</span>                    night();                    dayandnight.setText(<span class="hljs-string">"白天模式"</span>);                    dayandnight.setTextColor(Color.WHITE);                    flag++;                } <span class="hljs-keyword">else</span> {                    Day();                    dayandnight.setText(<span class="hljs-string">"夜间模式"</span>);                    dayandnight.setTextColor(Color.BLACK);                    flag++;                }            }        });        <span class="hljs-comment">// 获得是夜间模式还是白天的模式</span>        String mode = skinSp.getString(<span class="hljs-string">"skin"</span>, <span class="hljs-string">""</span>);        <span class="hljs-keyword">if</span> (mode != <span class="hljs-keyword">null</span> || !mode.equals(<span class="hljs-string">""</span>)) {            <span class="hljs-keyword">if</span> (mode.equals(NIGHT)) {                night();            } <span class="hljs-keyword">else</span> {                Day();            }        }    }    <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">night</span>() {        WindowManager.LayoutParams params = <span class="hljs-keyword">new</span> WindowManager.LayoutParams(                LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT,                WindowManager.LayoutParams.TYPE_APPLICATION,                WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE                        | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,                PixelFormat.TRANSLUCENT);<span class="hljs-comment">// 设置的五个参数</span>        params.gravity = Gravity.BOTTOM;        params.y = <span class="hljs-number">10</span>;        <span class="hljs-keyword">if</span> (myView == <span class="hljs-keyword">null</span>) {            myView = <span class="hljs-keyword">new</span> TextView(<span class="hljs-keyword">this</span>);            myView.setBackgroundColor(<span class="hljs-number">0x80000000</span>);        }        mWindowManager.addView(myView, params);        Editor edit = skinSp.edit();        edit.putString(<span class="hljs-string">"skin"</span>, NIGHT);        edit.commit();    }    <span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">Day</span>() {        <span class="hljs-keyword">if</span> (myView != <span class="hljs-keyword">null</span>) {            mWindowManager.removeView(myView);            Editor edit = skinSp.edit();            edit.putString(<span class="hljs-string">"skin"</span>, DAY);            edit.commit();        }    }    <span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">removeSkin</span>() {        <span class="hljs-keyword">if</span> (myView != <span class="hljs-keyword">null</span>) {            mWindowManager.removeView(myView);        }    }    <span class="hljs-annotation">@Override</span>    <span class="hljs-keyword">protected</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onDestroy</span>() {        <span class="hljs-keyword">super</span>.onDestroy();        String mode = skinSp.getString(<span class="hljs-string">"skin"</span>, <span class="hljs-string">""</span>);        <span class="hljs-keyword">if</span> (mode.equals(NIGHT)) {            removeSkin();        }    }}</code></span>
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