【Android】Android工具函数整理

来源：互联网发布：知乎suck for living 编辑：程序博客网时间：2024/05/22 17:30

import android.app.Activity;import android.app.ActivityManager;import android.app.KeyguardManager;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.content.pm.PackageManager;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.Uri;import android.os.PowerManager;import android.telephony.TelephonyManager;import android.text.TextUtils;import android.util.DisplayMetrics;import android.util.TypedValue;import android.view.inputmethod.InputMethodManager;import android.widget.EditText;import java.io.File;import java.util.List;/** * Created by chad on 11/8/2015. */public class MineUtil {    /**     * 发送短信     *     * @param context     * @param phoneNumber     * @param content     */    public static void sendSms(Context context, String phoneNumber,                               String content) {        Uri uri = Uri.parse("smsto:"                + (TextUtils.isEmpty(phoneNumber) ? "" : phoneNumber));        Intent intent = new Intent(Intent.ACTION_SENDTO, uri);        intent.putExtra("sms_body", TextUtils.isEmpty(content) ? "" : content);        context.startActivity(intent);    }    /**     * 点亮屏幕然后解锁,需要权限:android.permission.DISABLE_KEYGUARD,     * android:name="android.permission.WAKE_LOCK"     *     * @param context     */    public static void wakeUpAndUnlock(Context context) {        KeyguardManager km = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);        KeyguardManager.KeyguardLock kl = km.newKeyguardLock("unLock");        //解锁        kl.disableKeyguard();        //获取电源管理器对象        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);        //获取PowerManager.WakeLock对象,后面的参数|表示同时传入两个值,最后的是LogCat里用的Tag        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_DIM_WAKE_LOCK, "bright");        //点亮屏幕        wl.acquire();        //释放        wl.release();    }    /**     * 判断当前程序是否在前台,需要权限:android:name="android.permission.GET_TASKS"     *     * @param context     * @return     */    public static boolean isApplicationBackground(final Context context) {        ActivityManager am = (ActivityManager) context                .getSystemService(Context.ACTIVITY_SERVICE);        @SuppressWarnings("deprecation")        List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);        if (!tasks.isEmpty()) {            ComponentName topActivity = tasks.get(0).topActivity;            if (!topActivity.getPackageName().equals(context.getPackageName())) {                return true;            }        }        return false;    }    /**     * 有木有链接wifi     *     * @param context     * @return     */    public static boolean isWifiConnected(Context context) {        ConnectivityManager connectivityManager = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo wifiNetworkInfo = connectivityManager                .getNetworkInfo(ConnectivityManager.TYPE_WIFI);        if (wifiNetworkInfo.isConnected()) {            return true;        }        return false;    }    /**     * 安装apk     *     * @param context     * @param file     */    public static void installApk(Context context, File file) {        Intent intent = new Intent();        intent.setAction("android.intent.action.VIEW");        intent.addCategory("android.intent.category.DEFAULT");        intent.setType("application/vnd.android.package-archive");        intent.setDataAndType(Uri.fromFile(file),                "application/vnd.android.package-archive");        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        context.startActivity(intent);    }    /**     * 根据手机的分辨率从 dp 的单位 转成为 px(像素)     */    public static int dip2px(Context context, float dpValue) {        final float scale = context.getResources().getDisplayMetrics().density;        return (int) (dpValue * scale + 0.5f);    }    /**     * 根据手机的分辨率从 px 转成为 dp     */    public static int px2dip(Context context, float pxValue) {        final float scale = context.getResources().getDisplayMetrics().density;        return (int) (pxValue / scale + 0.5f);    }    /**     * 根据手机的分辨率从 dp 转成为 px     */    public static int dp2px(Context context, int dp) {        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,                context.getResources().getDisplayMetrics());    }    /**     * 获取手机屏幕高度     *     * @param context     * @return     */    public static int getScreenHeight(Activity context) {        DisplayMetrics dm = new DisplayMetrics();        context.getWindowManager().getDefaultDisplay().getMetrics(dm);        return dm.heightPixels;    }    /**     * 获取手机屏幕宽度     *     * @param context     * @return     */    public static int getScreenWidth(Activity context) {        DisplayMetrics dm = new DisplayMetrics();        context.getWindowManager().getDefaultDisplay().getMetrics(dm);        return dm.widthPixels;    }    /**     * 获取状态栏高度     *     * @param context     * @return     */    public static int getStatusHeight(Context context) {        int result = 0;        int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");        if (resourceId > 0) {            result = context.getResources().getDimensionPixelSize(resourceId);        }        return result;    }    /**     * 拨打电话,,需要权限:android.permission.CALL_PHONE     *     * @param context     * @param phoneNumber     */    public static void call(Context context, String phoneNumber) {        context.startActivity(new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + phoneNumber)));    }    /**     * 跳转到拨号界面     *     * @param context     * @param phoneNumber     */    public static void callDial(Context context, String phoneNumber) {        context.startActivity(new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + phoneNumber)));    }    /**     * 隐藏键盘     *     * @param context     * @param edit     */    public static void hideSoftKeyBoard(Context context, EditText edit) {        InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);        imm.hideSoftInputFromWindow(edit.getWindowToken(), 0);    }    /**     * 显示键盘     *     * @param context     * @param edit     */    public static void showSoftKeyBoard(Context context, EditText edit) {        InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);        imm.showSoftInput(edit, InputMethodManager.RESULT_SHOWN);        imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);    }    /**     * 获取Imei号码     * @param context     * @return     */    public static String getIMEI(Context context) {        String deviceId;        TelephonyManager telephony = (TelephonyManager) context                .getSystemService(Context.TELEPHONY_SERVICE);        deviceId = telephony.getDeviceId();        return deviceId;    }    /**     * 获取app的版本号     * @param context     * @return     */    public static String getAppVersion(Context context) {        String version = "0";        try {            version = context.getPackageManager().getPackageInfo(                    context.getPackageName(), 0).versionName;        } catch (PackageManager.NameNotFoundException e) {            e.printStackTrace();        }        return version;    }    /**     * 当前手机是否处于睡眠状态     *     * @param context     * @return     */    public static boolean isSleeping(Context context) {        KeyguardManager kgMgr = (KeyguardManager) context                .getSystemService(Context.KEYGUARD_SERVICE);        boolean isSleeping = kgMgr.inKeyguardRestrictedInputMode();        return isSleeping;    }    /**     * 能否联网     *     * @param context     * @return     */    public static boolean isNetAvaliable(Context context) {        ConnectivityManager manager = (ConnectivityManager) context                .getSystemService(Activity.CONNECTIVITY_SERVICE);        NetworkInfo info = manager.getActiveNetworkInfo();        if (info != null && info.isConnected()) {            return true;        }        return false;    }    /**     * 将px值转换为sp值，保证文字大小不变     *     * @param pxValue （DisplayMetrics类中属性scaledDensity）     * @return     */    public static int px2sp(Context context, float pxValue) {        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;        return (int) (pxValue / fontScale + 0.5f);    }    /**     * 将sp值转换为px值，保证文字大小不变     *     * @param spValue （DisplayMetrics类中属性scaledDensity）     * @return     */    public static int sp2px(Context context, float spValue) {        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;        return (int) (spValue * fontScale + 0.5f);    }<br style="font-family: monospace; white-space: pre; background-color: rgb(240, 240, 240);" />    /**     * 有木有SD卡     * @return     */    public static boolean withSDCard() {        return android.os.Environment.getExternalStorageState().equals(                android.os.Environment.MEDIA_MOUNTED);    }    /**     * 回到launcher界面,相当于点击home键     * @param context     */    public static void RedirectToHomeFace(Context context) {        Intent mHomeIntent = new Intent(Intent.ACTION_MAIN);        mHomeIntent.addCategory(Intent.CATEGORY_HOME);        mHomeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK                | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);        context.startActivity(mHomeIntent);    }}

/** * 判断是否是 Tablet(来自知乎用户面条的回答) * * @param activity Activity * @return true, if is tablet device */public static boolean isTablet(Activity activity) {    DisplayMetrics dm = new DisplayMetrics();    activity.getWindowManager().getDefaultDisplay().getMetrics(dm);    double diagonalPixels = Math.sqrt(Math.pow(dm.widthPixels, 2) + Math.pow(dm.heightPixels, 2));    double screenSize = diagonalPixels / (160 * dm.density);    return screenSize >= 6.0D;}

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