Android 使用数据库操作应用加锁、未加锁，列表展示效果

效果图：

要求：1.获取应用并展示，上下滑动带动画

2.未加锁中点击"锁"图标动画删除该条目，并添加至 程序锁 数据库(存放已加锁应用)

3.已加锁中点击"锁"图标动画删除该条目，并将当前应用从  程序锁  中删除

上代码：

首先编写页面：

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="pl.zyqj.zz.programlock.MainActivity">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:background="#6600ff00"        android:gravity="center"        android:padding="8dp" >        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:id="@+id/tv_unlock"            android:background="@drawable/tab_left_pressed"            android:gravity="center"            android:text="未加锁"            android:textColor="#ffffff" />        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:background="@drawable/tab_right_default"            android:gravity="center"            android:text="已加锁"            android:id="@+id/tv_locked"            android:textColor="#ffffff" />    </LinearLayout>    <LinearLayout        android:id="@+id/ll_content"        android:orientation="vertical"        android:layout_width="match_parent"        android:layout_height="match_parent" >    </LinearLayout></LinearLayout>

MainActivity.java

public class MainActivity extends FragmentActivity implements View.OnClickListener {    private TextView tvUnLock;    private TextView tvLocked;    private UnLockFragment unlockFragment;    private LockedFragment lockedFragment;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        tvUnLock = (TextView) findViewById(R.id.tv_unlock);        tvLocked = (TextView) findViewById(R.id.tv_locked);        tvUnLock.setOnClickListener(this);        tvLocked.setOnClickListener(this);        unlockFragment = new UnLockFragment();        lockedFragment = new LockedFragment();        // 获得fragment管理器        FragmentManager fragmentManager = getSupportFragmentManager();        // 开启事务        FragmentTransaction beginTransaction = fragmentManager.beginTransaction();        // 使用 fragment 替换  指定的布局中所有的子view        beginTransaction.replace(R.id.ll_content, unlockFragment);        // 提交        beginTransaction.commit();    }    /**     * fragment 的使用步骤：     * 一：先在布局文件中，为fragment指定一个显示的区域     * 二：让activiy改为继承自 FragmentActivity     * 三：显示fragment     // 获得fragment管理器     FragmentManager fragmentManager = getSupportFragmentManager();     // 开启事务     FragmentTransaction beginTransaction = fragmentManager.beginTransaction();     // 使用 fragment 替换  指定的布局中所有的子view     beginTransaction.replace(R.id.ll_content, unlockFragment);     // 提交     beginTransaction.commit();     *     * 注意事件：如果关联了v4包的源码，记着把v4包加入到apk安装包中     */    @Override    public void onClick(View v) {        // 获得fragment管理器        FragmentManager fragmentManager = getSupportFragmentManager();        // 开启事务        FragmentTransaction beginTransaction = fragmentManager.beginTransaction();        switch (v.getId()) {            case R.id.tv_unlock:                // 使用 fragment 替换  指定的布局中所有的子view                beginTransaction.replace(R.id.ll_content, unlockFragment);                tvUnLock.setBackgroundResource(R.drawable.tab_left_pressed);                tvLocked.setBackgroundResource(R.drawable.tab_right_default);                break;            case R.id.tv_locked:                // 使用 fragment 替换  指定的布局中所有的子view                beginTransaction.replace(R.id.ll_content, lockedFragment);                tvUnLock.setBackgroundResource(R.drawable.tab_left_default);                tvLocked.setBackgroundResource(R.drawable.tab_right_pressed);                break;        }        // 提交        beginTransaction.commit();    }}

获取应用数据：AppUtils.java

public class AppUtils {/** * 获得手机中安装的所有的应用的信息 * @param ctx * @return */public static List<AppInfoBean> getAllAppInfo(Context ctx){List<AppInfoBean> allAppInfo = new ArrayList<AppInfoBean>();// 包管理器，管理手机 中所有的APK 安装包PackageManager pm = ctx.getPackageManager();    //   pm  project manager 项目经理List<PackageInfo> installedPackages = pm.getInstalledPackages(0);for (PackageInfo packageInfo : installedPackages) {// PackageInfo 包含AndroidManifest清单文件中，所有的信息// ApplicationInfo 包含 AndroidManifest清单文件中 , application中的所有的信息ApplicationInfo applicationInfo = packageInfo.applicationInfo;AppInfoBean appBean = new AppInfoBean();allAppInfo.add(appBean); // 添加至集合// 设置包名appBean.packageName = packageInfo.packageName;// 获得应用名称appBean.appName = applicationInfo.loadLabel(pm).toString();// 应用图标appBean.appIcon = applicationInfo.loadIcon(pm);//applicationInfo.dataDir; // /data/data/包名 路径String apkPath = applicationInfo.sourceDir; // 该应用apk 的路径//System.out.println(appBean.appName+ " : "+apkPath);// 为apkPath 赋值appBean.apkPath = apkPath;File apkFile = new File(apkPath);appBean.appSize = apkFile.length();// 根据路径判断是否是系统应用if(apkPath.startsWith("/data")){ // 用户应用appBean.isSys = false;System.out.println(appBean.appName+" 根据 路径 值判断，是用户应用");}else{// 系统应用appBean.isSys = true;System.out.println(appBean.appName+" 根据 路径 值判断，是系统应用");}// 根据flag 值来判断是否是系统应用// 如果不等于0，说明批配成功，那么当前应用，拥有该 FLAG 值标注的属性if((applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM)!=0 ){ System.out.println(appBean.appName+" 根据 flag 值判断，是系统应用");}else{System.out.println(appBean.appName+" 根据 flag 值判断，是用户应用");}if((applicationInfo.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE)!=0){ //  appBean.isInSd = true;}else{appBean.isInSd = false;}}SystemClock.sleep(500); // 休眠2秒，模拟耗时的情况return allAppInfo;}

未加锁，已加锁 中做操作

UnLockFragment.java

public class UnLockFragment extends Fragment {    private TextView tvDesc;    private ListView listView;    private AppLockDao lockDao;    private boolean isAnim;    /**     * 未加锁的应用集合     */    private List<AppInfoBean> unlockAppList;    private ProgressDialog proDlg;    private MyAdapter adapter;    @Override    /**     * Fragment 就是对一个view 和这个 view 的所有逻辑处理 封装在一个类中     * 创建一个view     */    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        lockDao = AppLockDao.getInsantce(getActivity());        View view = inflater.inflate(R.layout.fragment_unlock, null);        tvDesc = (TextView) view.findViewById(R.id.tv_desc);        listView = (ListView) view.findViewById(R.id.listView);        proDlg = new ProgressDialog(getActivity());        proDlg.setMessage("玩命加载中...");        fillData();        initListener();        return view;    }    private void initListener() {        listView.setOnScrollListener(new OnScrollListener() {            @Override            public void onScrollStateChanged(AbsListView view, int scrollState) {                if (scrollState == OnScrollListener.SCROLL_STATE_TOUCH_SCROLL                        || scrollState == OnScrollListener.SCROLL_STATE_FLING) {                    isAnim = true;                } else {                    isAnim = false;                }            }            @Override            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {            }        });    }    private void fillData() {        proDlg.show();        new Thread() {            public void run() {                unlockAppList = new ArrayList<AppInfoBean>();                //获取应用                List<AppInfoBean> allAppInfo = AppUtils.getAllAppInfo(getActivity());                for (AppInfoBean app : allAppInfo) {                    if (lockDao.isLockApp(app.packageName)) {//查询数据库中是否包名此包名的应用                        // 是需要锁定的  包含：说明是锁定的程序                    } else {                        // 没有锁定的  不包含：不需要锁定的程序                        unlockAppList.add(app);                    }                }                handler.sendEmptyMessage(88);            }            ;        }.start();    }    private Handler handler = new Handler() {        public void handleMessage(android.os.Message msg) {            proDlg.dismiss();            // 显示listView            adapter = new MyAdapter();            listView.setAdapter(adapter);        }        ;    };    private class ViewHolder {        public TextView tvName;        public ImageView ivIcon;        public ImageView ivUnLock;    }    private class MyAdapter extends BaseAdapter {        @Override        public int getCount() {            tvDesc.setText("未加锁应用:" + unlockAppList.size() + "个");            return unlockAppList.size();        }        @Override        public Object getItem(int position) {            return null;        }        @Override        public long getItemId(int position) {            return 0;        }        @Override        public View getView(final int position, View convertView, ViewGroup parent) {            View view;            ViewHolder vh;            if (convertView == null) {                view = View.inflate(getActivity(), R.layout.list_item_unlock_fragment, null);                vh = new ViewHolder();                //  找到子view , 并打包                vh.tvName = (TextView) view.findViewById(R.id.tv_name_list_item);                vh.ivIcon = (ImageView) view.findViewById(R.id.iv_icon_list_item);                vh.ivUnLock = (ImageView) view.findViewById(R.id.iv_unlock_fragment);                // 背包                view.setTag(vh);            } else {                view = convertView;                vh = (ViewHolder) view.getTag();            }            AppInfoBean app = unlockAppList.get(position);            vh.ivIcon.setBackgroundDrawable(app.appIcon);            vh.tvName.setText(app.appName);            vh.ivUnLock.setOnClickListener(new OnClickListener() {                @Override                public void onClick(View v) {                    // 当前条目做平移动画                    // X方向从0到100% ，Y方向保持不变                    TranslateAnimation ta = new TranslateAnimation(                            Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 1,                            Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0);                    ta.setDuration(500);//ta.setFillAfter(true); // 动画完成后，保持完成的状态                    View itemView = (View) v.getParent(); // v.getParent() 获得V的父view                    itemView.startAnimation(ta); // 向系统发布做动画的命令                    /**                     * 添加动画的监听，当动画执行完之后，再删除并刷新条目，否则条目会复用混论，同时 //ta.setFillAfter(true); // 动画完成后，保持完成的状态                     */                    ta.setAnimationListener(new AnimationListener() {                        @Override                        public void onAnimationStart(Animation animation) {                        }                        @Override                        public void onAnimationRepeat(Animation animation) {                        }                        @Override                        public void onAnimationEnd(Animation animation) {                            // 将当前应用添加至程序锁 数据库                            lockDao.addAppLock(unlockAppList.get(position).packageName);                            // 从未加锁列表中删除该条目                            unlockAppList.remove(position);                            notifyDataSetChanged(); //  刷新列表                        }                    });                }            });            if (isAnim) {                // 课外题，让listView 仅在上下滑动时，执行条目动画                TranslateAnimation ta = new TranslateAnimation(                        Animation.RELATIVE_TO_SELF, -1, Animation.RELATIVE_TO_SELF, 0,                        Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0);                ta.setDuration(500);                view.startAnimation(ta);            }            return view; // 如果返回 null ,发报异常，并且，异常中，只有系统代码，没有我们的代码        }    }}

LockedFragment.java

public class LockedFragment extends Fragment {    private TextView tvDesc;    private ListView listView;    private AppLockDao lockDao;    /**     * 已加锁的应用集合     */    private List<AppInfoBean> lockedAppList;    private ProgressDialog proDlg;    private MyAdapter adapter;    @Override    /**     * Fragment 就是对一个view 和这个 view 的所有逻辑处理 封装在一个类中     * 创建一个view     */    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        lockDao = AppLockDao.getInsantce(getActivity());        View view = inflater.inflate(R.layout.fragment_locked, null);        tvDesc = (TextView) view.findViewById(R.id.tv_desc);        listView = (ListView) view.findViewById(R.id.listView);        proDlg = new ProgressDialog(getActivity());        proDlg.setMessage("玩命加载中...");        fillData();        return view;    }    private void fillData() {        proDlg.show();        new Thread() {            public void run() {                lockedAppList = new ArrayList<AppInfoBean>();                List<AppInfoBean> allAppInfo = AppUtils.getAllAppInfo(getActivity());                for (AppInfoBean app : allAppInfo) {                    if (lockDao.isLockApp(app.packageName)) {                        // 是需要锁定的                        lockedAppList.add(app);                    } else {                        // 没有锁定的                    }                }                handler.sendEmptyMessage(88);            };        }.start();    }    private Handler handler = new Handler() {        public void handleMessage(android.os.Message msg) {            proDlg.dismiss();            // 显示listView            adapter = new MyAdapter();            listView.setAdapter(adapter);        }        ;    };    private class ViewHolder {        public TextView tvName;        public ImageView ivIcon;        public ImageView ivLocked;    }    private class MyAdapter extends BaseAdapter {        @Override        public int getCount() {            tvDesc.setText("已加锁应用:" + lockedAppList.size() + "个");            return lockedAppList.size();        }        @Override        public Object getItem(int position) {            return null;        }        @Override        public long getItemId(int position) {            return 0;        }        @Override        public View getView(final int position, View convertView, ViewGroup parent) {            View view;            ViewHolder vh;            if (convertView == null) {                view = View.inflate(getActivity(), R.layout.list_item_locked_fragment, null);                vh = new ViewHolder();                //  找到子view , 并打包                vh.tvName = (TextView) view.findViewById(R.id.tv_name_list_item);                vh.ivIcon = (ImageView) view.findViewById(R.id.iv_icon_list_item);                vh.ivLocked = (ImageView) view.findViewById(R.id.iv_locked_fragment);                // 背包                view.setTag(vh);            } else {                view = convertView;                vh = (ViewHolder) view.getTag();            }            AppInfoBean app = lockedAppList.get(position);            vh.ivIcon.setBackgroundDrawable(app.appIcon);            vh.tvName.setText(app.appName);            vh.ivLocked.setOnClickListener(new OnClickListener() {                @Override                public void onClick(View v) {                    // 当前条目做平移动画                    // X方向从0到100% ，Y方向保持不变                    TranslateAnimation ta = new TranslateAnimation(                            Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, -1,                            Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0);                    ta.setDuration(500);//ta.setFillAfter(true); // 动画完成后，保持完成的状态                    View itemView = (View) v.getParent(); // v.getParent() 获得V的父view                    itemView.startAnimation(ta); // 向系统发布做动画的命令                    ta.setAnimationListener(new AnimationListener() {                        @Override                        public void onAnimationStart(Animation animation) {                        }                        @Override                        public void onAnimationRepeat(Animation animation) {                        }                        @Override                        public void onAnimationEnd(Animation animation) {                            // 将当前应用从程序锁中删除                            lockDao.deleteAppLock(lockedAppList.get(position).packageName);                            // 从未加锁列表中删除该条目                            lockedAppList.remove(position);                            notifyDataSetChanged(); //  刷新列表                        }                    });                }            });            // 课外题，让listView 仅在上下滑动时，执行条目动画            TranslateAnimation ta = new TranslateAnimation(                    Animation.RELATIVE_TO_SELF, -1, Animation.RELATIVE_TO_SELF, 0,                    Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0);            ta.setDuration(500);//view.startAnimation(ta);            return view; // 如果返回 null ,发报异常，并且，异常中，只有系统代码，没有我们的代码        }    }}

展示数据库：

AppLockDbHelper.java

/** * 程序锁数据库 */public class AppLockDbHelper extends SQLiteOpenHelper{public AppLockDbHelper(Context context, String name, int version) {super(context, name, null, version);}@Overridepublic void onCreate(SQLiteDatabase db) {// 创建程序锁 表，存储所有的需要被锁定的应用的（包名) 作为唯一标识db.execSQL("create table applock(_id integer primary key autoincrement, package_name varchar(40));");}@Overridepublic void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {}}

AppLockDao.java

/** * 操作的工具类  单例的 */public class AppLockDao {private Context ctx;private AppLockDao(Context ctx){this.ctx = ctx;dbHelper = new AppLockDbHelper(ctx, "app_lock.db", 1);}private static AppLockDao instance;public static synchronized AppLockDao getInsantce(Context ctx){if(instance == null){instance = new AppLockDao(ctx);}return instance;}private AppLockDbHelper dbHelper;private String table_app_lock = "applock";/** * 定义一个指向程序锁数据库的URI  *///private Uri uri = Uri.parse("content://zz.itcast.cn.applock");//////// /** * 添加程序锁  已加锁 * @param packageName */public void addAppLock(String packageName){SQLiteDatabase db = dbHelper.getWritableDatabase();ContentValues values = new ContentValues();values.put("package_name", packageName);db.insert(table_app_lock, null, values);}/** * 删除程序锁 * @param packageName */public void deleteAppLock(String packageName){SQLiteDatabase db = dbHelper.getWritableDatabase();db.delete(table_app_lock, " package_name = ? ", new String[]{packageName});}/** * 判断指定包名的应用是否需要被锁定 查 * @param packageName * @return */public boolean isLockApp(String packageName){SQLiteDatabase db = dbHelper.getReadableDatabase();Cursor cursor = db.query(table_app_lock, null," package_name = ? ", new String[]{packageName}, null, null, null);boolean isAppLock = false;if(cursor.moveToNext()){ // 如果查到内容，移动成功isAppLock = true;}cursor.close();return isAppLock;}/** * 获得所有需要被锁定的应用 * @return */public List<String> getAllAppLock(){ArrayList<String> appLocks = new ArrayList<String>();SQLiteDatabase db = dbHelper.getReadableDatabase();Cursor cursor = db.query(table_app_lock, null, null, null, null, null, null);// cursor 默认指向第一行的上一行while(cursor.moveToNext()){String packageName = cursor.getString(1); // 总共二列，包名那列，下标为1appLocks.add(packageName);}cursor.close();return appLocks;}}

AppInfoBean.java

public class AppInfoBean {/** * 应用的包名 */public String packageName;public String appName;public Drawable appIcon;/** * 应用的大小，即APK安装包的大小 */public long appSize;/** * 判断是否是安装在SD卡中 */public boolean isInSd;/** * 判断是否是系统应用 */public boolean isSys;/** * APK文件的路径 */public String apkPath;}

代码中注释的已经很详细，请参看

源码：http://download.csdn.net/download/lijinweii/9951238