android代码集锦

调用root权限的应用：

    /**
     * 执行Command命令的函数
     * 
     * @param command  命令
     * @return 执行结果
     */
    public static boolean runRootCommand(String command) {
        Process process = null;
        DataOutputStream os = null;
        try {
            process = Runtime.getRuntime().exec("su");
            os = new DataOutputStream(process.getOutputStream());
            os.writeBytes(command + "
");
            os.writeBytes("exit
");
            os.flush();
            process.waitFor();
        } catch (Exception e) {
            Log.d(TAG, "the device is not rooted， error message： " + e.getMessage());
            return false;
        } finally {
            try {
                if (os != null) {
                    os.close();
                }
                if (process != null) {
                    process.destroy();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return true;
    }

 

获取安装了所有APP的信息：

    class PInfo {
        private String appname = "";
        private String pname = "";
        private String versionName = "";
        private int versionCode = 0;
        private Drawable icon;

        private void prettyPrint() {
            Log.i("MainActivity", appname + "|	" + pname + "|	" + versionName + "|	" + versionCode + "|	");
        }
    }

    private void listPackages() {
        // false = no system packages
        ArrayList<PInfo> apps = getInstalledApps(false);
        final int max = apps.size();
        for (int i = 0; i < max; i++) {
            apps.get(i).prettyPrint();
        }
    }

    private ArrayList<PInfo> getInstalledApps(boolean getSysPackages) {
        ArrayList<PInfo> res = new ArrayList<PInfo>();
        List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
        for (int i = 0; i < packs.size(); i++) {
            PackageInfo p = packs.get(i);
            if ((!getSysPackages) && (p.versionName == null)) {
                continue;
            }
            PInfo newInfo = new PInfo();
            newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString();
            newInfo.pname = p.packageName;
            newInfo.versionName = p.versionName;
            newInfo.versionCode = p.versionCode;
            newInfo.icon = p.applicationInfo.loadIcon(getPackageManager());
            res.add(newInfo);
        }
        return res;
    }

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