Android中获取应用信息

获取应用信息

工作中需要经常获取App的各种信息：现在写一个封装类

这里主要看Code

public class AppInfo implements Parcelable {private String appLabel;private Drawable appIcon;private Intent intent;private String pkgName;private Date date;private int number;private long cachesize;private long datasize;private long codesieze;static final int MAX_CHARACTER_COUNT = 9;protected AppInfo(Parcel in) {    appLabel = in.readString();    intent = in.readParcelable(Intent.class.getClassLoader());    pkgName = in.readString();    number = in.readInt();    cachesize = in.readLong();    datasize = in.readLong();    codesieze = in.readLong();}public static final Creator<AppInfo> CREATOR = new Creator<AppInfo>() {    @Override    public AppInfo createFromParcel(Parcel in) {        AppInfo appInfo = new AppInfo();        appInfo.setAppLabel(in.readString());        appInfo.setIntent((Intent) in.readParcelable(Intent.class.getClassLoader()));        appInfo.setPkgName(in.readString());        appInfo.setNumber(in.readInt());        appInfo.setCachesize(in.readLong());        appInfo.setDatasize(in.readLong());        appInfo.setCodesieze(in.readLong());        return new AppInfo(in);    }    @Override    public AppInfo[] newArray(int size) {        return new AppInfo[size];    }};public long getCachesize() {    return cachesize;}public void setCachesize(long cachesize) {    this.cachesize = cachesize;}public long getDatasize() {    return datasize;}public void setDatasize(long datasize) {    this.datasize = datasize;}public long getCodesieze() {    return codesieze;}public void setCodesieze(long codesieze) {    this.codesieze = codesieze;}public AppInfo() {}public String getAppLabel() {    return appLabel;}public void setAppLabel(String appName) {    this.appLabel = appName;}public Drawable getAppIcon() {    return appIcon;}public void setAppIcon(Drawable appIcon) {    this.appIcon = appIcon;}public Intent getIntent() {    return intent;}public void setIntent(Intent intent) {    this.intent = intent;}public String getPkgName() {    return pkgName;}public void setPkgName(String pkgName) {    this.pkgName = pkgName;}public Date getDate() {    return date;}public void setDate(Date date) {    this.date = date;}public void setNumber(int number) {    this.number = number;}public int getNumber() {    return number;}@Overridepublic int describeContents() {    return 0;}@Overridepublic void writeToParcel(Parcel parcel, int i) {    parcel.writeString(appLabel);    parcel.writeParcelable(intent, i);    parcel.writeString(pkgName);    parcel.writeInt(number);    parcel.writeLong(cachesize);    parcel.writeLong(datasize);    parcel.writeLong(codesieze);}public String limitNameLength(String appName, Context mContext, AppInfo appInfo) {    int mCharacterCount = 0;    int mInputNum = 0;    for (int i = 0; i<appName.length(); i++) {         String str = appName.substring(i, i + 1);         mInputNum++;         mCharacterCount += regexInput(str);         if (mCharacterCount > MAX_CHARACTER_COUNT) {            break;         }    }    if (mCharacterCount > MAX_CHARACTER_COUNT && (mCharacterCount % 2 == 0)) {        appName = appName.substring(0,mInputNum);        if (!appName.equals(appInfo.getAppLabel())) {            appName += mContext.getString(R.string.omit);        }    } else if (mCharacterCount > MAX_CHARACTER_COUNT && (mCharacterCount % 2 == 1)) {        appName = appName.substring(0, mInputNum - 1) + mContext.getString(R.string.omit);    }    return appName;}private int regexInput(String subString) {    Pattern p = Pattern.compile("[\u4e00-\u9fa5]");    Matcher m = p.matcher(subString);    if (m.matches()) {        return 2;    } else {        return 1;    }}

}

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看应用这个类

PackageManager pm = this.getPackageManager();        Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);        List<ResolveInfo> resolveInfos = pm.queryIntentActivities(mainIntent, 0);

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for (ResolveInfo reInfo : resolveInfos) {            File file = new File(reInfo.activityInfo.applicationInfo.sourceDir);            Date systemDate = new Date(file.lastModified());            ApplicationInfo applicationInfo = reInfo.activityInfo.applicationInfo;            String activityName = reInfo.activityInfo.name;            String pkgName = reInfo.activityInfo.packageName;            String appLabel = (String) reInfo.loadLabel(pm);            Drawable icon = reInfo.loadIcon(pm);            Intent launchIntent = new Intent();            launchIntent.setComponent(new ComponentName(pkgName, activityName));            AppInfo appInfo = new AppInfo();            appInfo.setAppLabel(appLabel);            appInfo.setPkgName(pkgName);            appInfo.setDate(systemDate);            appInfo.setAppIcon(icon);            appInfo.setIntent(launchIntent);            mlistAppInfo.add(appInfo);        }

三段代码搞定（没有注释直接copy使用）