android 全面获取系统状态

来源：互联网发布：啊哈算法好不好编辑：程序博客网时间：2024/04/29 15:34

最近项目需要一个一键获取系统状态的功能，这里我写了一个demon简单的介绍一下如何获取系统的电量、手机的网络状况（包括2G、3G、4G）、蓝牙的开关情况等共功能。具体的各个代码的功能我就不详细的讲解ovo。。因为大部分我都做了注释。好了我就不废话了直接上代码：

首先就是大家关注的实现部分：

</pre><pre name="code" class="html">public class MainActivity extends Activity implements View.OnClickListener {    private WifiManager mWifiManager;    private LocationManager mLocationManager;    //判断gps的状态    private boolean isGpsOpen;    private boolean isBatteryOpen;    private boolean isGsmOpen;    private Button bt_gps, bt_battery, bt_conn, bt_gsm, bt_bluetooth;    private BatteryReceiver batteryReceiver;    private IntentFilter intentFilter;    private BluetoothAdapter mBluetoothAdapter;    private TelephonyManager Tel;    private MyPhoneStateListener MyListener;    private ConnectionChangeReceiver myReceiver;    private boolean isConnect;    public static final String SIGNAL_STRENGTH_NONE_OR_UNKNOWN = "无信号";    public static final String SIGNAL_STRENGTH_POOR = "信号差";    public static final String SIGNAL_STRENGTH_MODERATE = "中等的";    public static final String SIGNAL_STRENGTH_GOOD = "信号比较好";    public static final String SIGNAL_STRENGTH_GREAT = "信号非常好";    /**     * Network type is unknown     */    public static final int NETWORK_TYPE_UNKNOWN = 0;    /**     * Current network is GPRS     */    public static final int NETWORK_TYPE_GPRS = 1;    /**     * Current network is EDGE     */    public static final int NETWORK_TYPE_EDGE = 2;    /**     * Current network is UMTS     */    public static final int NETWORK_TYPE_UMTS = 3;    /**     * Current network is CDMA: Either IS95A or IS95B     */    public static final int NETWORK_TYPE_CDMA = 4;    /**     * Current network is EVDO revision 0     */    public static final int NETWORK_TYPE_EVDO_0 = 5;    /**     * Current network is EVDO revision A     */    public static final int NETWORK_TYPE_EVDO_A = 6;    /**     * Current network is 1xRTT     */    public static final int NETWORK_TYPE_1xRTT = 7;    /**     * Current network is HSDPA     */    public static final int NETWORK_TYPE_HSDPA = 8;    /**     * Current network is HSUPA     */    public static final int NETWORK_TYPE_HSUPA = 9;    /**     * Current network is HSPA     */    public static final int NETWORK_TYPE_HSPA = 10;    /**     * Current network is iDen     */    public static final int NETWORK_TYPE_IDEN = 11;    /**     * Current network is EVDO revision B     */    public static final int NETWORK_TYPE_EVDO_B = 12;    /**     * Current network is LTE     */    public static final int NETWORK_TYPE_LTE = 13;    /**     * Current network is eHRPD     */    public static final int NETWORK_TYPE_EHRPD = 14;    /**     * Current network is HSPA+     */    public static final int NETWORK_TYPE_HSPAP = 15;    /**     * Current network is GSM     */    public static final int NETWORK_TYPE_GSM = 16;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        init();        initEvent();    }    /**     * 初始化对象     */    private void init() {        bt_gps = (Button) findViewById(R.id.bt_gps);        bt_battery = (Button) findViewById(R.id.bt_battery);        bt_conn = (Button) findViewById(R.id.bt_conn);        bt_gsm = (Button) findViewById(R.id.bt_gsm);        bt_bluetooth = (Button) findViewById(R.id.bt_bluetooth);        batteryReceiver = new BatteryReceiver();        //注册广播接受者监听系统电池变化        intentFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);        mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);        /* Update the listener, and start it */        MyListener = new MyPhoneStateListener();        Tel = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();        mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);    }    /**     * 初始化事件     */    private void initEvent() {        bt_gps.setOnClickListener(this);        bt_battery.setOnClickListener(this);        bt_conn.setOnClickListener(this);        bt_gsm.setOnClickListener(this);        bt_bluetooth.setOnClickListener(this);        registerReceiver();    }    /**     * Called when a view has been clicked.     *     * @param v The view that was clicked.     */    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.bt_battery:                batteryState();                break;            case R.id.bt_conn:                Toast.makeText(this, netWorkState(), Toast.LENGTH_LONG).show();                break;            case R.id.bt_gps:                Toast.makeText(this, gpsState(), Toast.LENGTH_LONG).show();                break;            case R.id.bt_gsm:                isGsmOpen = true;                Tel.listen(MyListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);                break;            case R.id.bt_bluetooth:                Toast.makeText(this, blueToothState(), Toast.LENGTH_LONG).show();                break;        }    }    /**     * 注册广播得到系统电量的值     */    private void batteryState() {        isBatteryOpen = true;        //注册receiver        registerReceiver(batteryReceiver, intentFilter);    }    /**     * 返回gps的状态     */    private String gpsState() {        String gpsState = "gps已关闭";        if (mLocationManager != null) {            isGpsOpen = mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);            if (isGpsOpen) {                gpsState = "gps已打开";            } else {                gpsState = "gps已关闭";            }        }        return gpsState;    }    /**     * @return 返回wife连接状态     */    private boolean isWifiOpen() {        boolean isWifiOpen = mWifiManager.isWifiEnabled();        return isWifiOpen;    }    /**     * 判断网络状况     *     * @return     */    private String netWorkState() {        String netWorkState = "未知网络";        if (!isConnect) {            return netWorkState = "当前无网络";        } else if (isWifiOpen()) {            return netWorkState = "无线网络已打开";        } else {            switch (Tel.getNetworkType()) {                case NETWORK_TYPE_GPRS:                case NETWORK_TYPE_GSM:                case NETWORK_TYPE_EDGE:                case NETWORK_TYPE_CDMA:                case NETWORK_TYPE_1xRTT:                case NETWORK_TYPE_IDEN:                    return netWorkState = "当前2g网络";                case NETWORK_TYPE_UMTS:                case NETWORK_TYPE_EVDO_0:                case NETWORK_TYPE_EVDO_A:                case NETWORK_TYPE_HSDPA:                case NETWORK_TYPE_HSUPA:                case NETWORK_TYPE_HSPA:                case NETWORK_TYPE_EVDO_B:                case NETWORK_TYPE_EHRPD:                case NETWORK_TYPE_HSPAP:                    return netWorkState = "当前3g网络";                case NETWORK_TYPE_LTE:                    return netWorkState = "当前4g网络";                default:                    return netWorkState;            }        }    }    /**     * 判断蓝牙服务     *     * @return     */    private String blueToothState() {        String blueToothState = "蓝牙已关闭";        if (mBluetoothAdapter != null) {            boolean isBlueOpen = mBluetoothAdapter.isEnabled();            if (isBlueOpen) {                blueToothState = "蓝牙已打开";            } else {                blueToothState = "蓝牙已关闭";            }        }        return blueToothState;    }    /**     * 广播监听电量变化     */    class BatteryReceiver extends BroadcastReceiver {        //判断它是否是为电量变化的Broadcast Action        @Override        public void onReceive(Context context, Intent intent) {            if (Intent.ACTION_BATTERY_CHANGED.equals(intent.getAction()) && isBatteryOpen) {                //获取当前电量                int level = intent.getIntExtra("level", 0);                //电量的总刻度                int scale = intent.getIntExtra("scale", 100);                //把它转成百分比                Toast.makeText(context, "电池电量为" + ((level * 100) / scale) + "%", Toast.LENGTH_LONG).show();                isBatteryOpen = false;            }        }    }    /* 开始PhoneState听众 */    private class MyPhoneStateListener extends PhoneStateListener {        /* 从得到的信号强度,每个tiome供应商有更新 */        @Override        public void onSignalStrengthsChanged(SignalStrength signalStrength) {            super.onSignalStrengthsChanged(signalStrength);            String level;            if (isGsmOpen) {                int asu = signalStrength.getGsmSignalStrength();                if (asu <= 2 || asu == 99) level = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;                else if (asu >= 12) level = SIGNAL_STRENGTH_GREAT;                else if (asu >= 8) level = SIGNAL_STRENGTH_GOOD;                else if (asu >= 5) level = SIGNAL_STRENGTH_MODERATE;                else level = SIGNAL_STRENGTH_POOR;                Toast.makeText(getApplicationContext(),                        "当前"                                + level,                        Toast.LENGTH_SHORT).show();            }            isGsmOpen = false;        }    }    ;    /**     * 广播监听网络变化     */    public class ConnectionChangeReceiver extends BroadcastReceiver {        @Override        public void onReceive(Context context, Intent intent) {            ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo mobNetInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);            NetworkInfo wifiNetInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);            if (!mobNetInfo.isConnected() && !wifiNetInfo.isConnected()) {                isConnect = false;            } else {                isConnect = true;            }        }    }    /**     * 注册广播     */    private void registerReceiver() {        IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);        myReceiver = new ConnectionChangeReceiver();        this.registerReceiver(myReceiver, filter);    }    /**     * 注销广播     */    private void unregisterReceiver() {        this.unregisterReceiver(myReceiver);    }    /**     * 注销广播     */    @Override    protected void onDestroy() {        super.onDestroy();        unregisterReceiver();    }}

接下来我发下权限的部分：

<pre name="code" class="java"><?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.com.keyfuncation" >    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" ></uses-permission>    <uses-permission android:name="android.permission.BLUETOOTH" ></uses-permission>    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name=".MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

接下来顺便说下我这里有一个bug就是当你是双卡的时候手机的信号强度是99的也就是说是一个无法识别的状态，也就是说你其实手机两张卡都有信号但是显示的是无信号。懂的也可以教下我如何区分单卡还是双卡一类的知识，google是不提供这方面的接口的。

最后发一下效果图：

哈哈~界面有点丑希望大家见谅。

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