Day06

• 來電監聽

  創建后臺服務 AddressServicepublic void onCreate() {listener = new MyPhoneListener();tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);tm.listen(listener, PhoneStateListener.LISTEN_CALL_STATE); };@Override public void onDestroy() {super.onDestroy();tm.listen(listener, PhoneStateListener.LISTEN_NONE);listener = null; }class MyPhoneListener extends PhoneStateListener {@Overridepublic void onCallStateChanged(int state, String incomingNumber) {switch (state) {case TelephonyManager.CALL_STATE_RINGING:String address = NumberAddressDao.getAddress(incomingNumber);Toast.makeText(AddressService.this, address, Toast.LENGTH_LONG).show();break;default:break;}super.onCallStateChanged(state, incomingNumber);} }設置頁面新增勾選框,點擊后啟動或停止service

• 判斷服務是否在后臺運行,更新checkbox

  public static boolean isServiceRunning(String serviceName, Context ctx) {ActivityManager am = (ActivityManager) ctx.getSystemService(Context.ACTIVITY_SERVICE);List<RunningServiceInfo> runningServices = am.getRunningServices(100);//獲取所有后臺運行的服務for (RunningServiceInfo runningServiceInfo : runningServices) {String className = runningServiceInfo.service.getClassName();if (className.equals(serviceName)) {return true;}}return false; }

• 去電監聽

  • 靜態注冊廣播

    <receiver android:name=".receiver.OutCallReceiver" ><intent-filter><action android:name="android.intent.action.NEW_OUTGOING_CALL" /></intent-filter> </receiver>注意添加權限: <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>問題: 當開關關閉時,仍然能顯示去電地址信息

  • 動態注冊廣播

    當啟動后臺服務時,注冊廣播,服務停止后,注銷廣播,這樣的話,來電和去電的位置顯示都可以由一個開關來控制

• 自定義Toast

  • Toast原理分析

    查找transient_notification文件,查看布局樣式, 在values/themes中搜索toastFrameBackground, 查看背景圖片toast_frame.9.png分析Toast源碼, 創建自定義Toastprivate void showToast(String address) {view = new TextView(this);view.setText(address);view.setTextColor(Color.RED);final WindowManager.LayoutParams params = new WindowManager.LayoutParams();params.height = WindowManager.LayoutParams.WRAP_CONTENT;params.width = WindowManager.LayoutParams.WRAP_CONTENT;params.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;params.format = PixelFormat.TRANSLUCENT;params.type = WindowManager.LayoutParams.TYPE_TOAST;params.setTitle("Toast");wm.addView(view, params); }監聽電話狀態, 如果電話處于空閑狀態,就從WindowManager中刪除View case TelephonyManager.CALL_STATE_IDLE:if (wm != null && view != null) {wm.removeView(view);} break;

  • 金山手機衛士

    演示金山手機衛士歸屬地樣式, 模仿其樣式進行開發. 解壓金山手機衛士apk,獲取相關資源文件. 注意: 相關圖片在drawable目錄下, 而非drawable-hdpi

  • 自定義Toast樣式

    1. 布局文件電話圖標: @android:drawable/ic_menu_call2. 自定義SettingClickView, 類似SettingItemView去掉自定義屬性,保留setDesc和setTitle兩個方法3. 初始化SettingClickView, 設置點擊事件,彈出單選Dialog// 選擇歸屬地樣式的彈窗AlertDialog.Builder builder = new AlertDialog.Builder(SettingActivity.this);int style = sp.getInt("address_style", 0);builder.setSingleChoiceItems(items, style,new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which) {sp.edit().putInt("address_style", which).commit();scvStyle.setDesc(items[which]);dialog.dismiss();}});builder.setNegativeButton("取消", null);builder.show();4. 選擇相應樣式,保存在sp中5. 從sp中讀取樣式,在AddressService中更改背景圖片SharedPreferences sp = getSharedPreferences("config", MODE_PRIVATE);int style = sp.getInt("address_style", 0);int[] bgs = new int[] { R.drawable.call_locate_white,R.drawable.call_locate_orange, R.drawable.call_locate_blue,R.drawable.call_locate_gray, R.drawable.call_locate_green };view.setBackgroundResource(bgs[style]);

• 修改歸屬地顯示位置

  定義DragViewActivity1. 布局文件:<RelativeLayout 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" ><TextViewandroid:id="@+id/tv_top"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentTop="true"android:layout_centerHorizontal="true"android:background="@drawable/call_locate_blue"android:gravity="center"android:text="按住提示框拖動到任意位置,按手機返回鍵立刻生效"android:textColor="#000"android:textSize="20sp" /><TextViewandroid:id="@+id/tv_bottom"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_centerHorizontal="true"android:background="@drawable/call_locate_blue"android:gravity="center"android:text="按住提示框拖動到任意位置,按手機返回鍵立刻生效"android:textColor="#000"android:textSize="20sp"android:visibility="invisible" /><ImageViewandroid:id="@+id/iv_drag"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="90dp"android:src="@drawable/drag" /></RelativeLayout>2. 拖拽事件監聽ivDrag.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_DOWN://獲取起始點坐標startX = (int) event.getRawX();startY = (int) event.getRawY();break;case MotionEvent.ACTION_MOVE:int endX = (int) event.getRawX();int endY = (int) event.getRawY();int dx = endX - startX;int dy = endY - startY;System.out.println("位置偏移:(" + dx + "," + dy + ")");//根據手指的移動偏移量,計算出圖片相應的位置int left = ivDrag.getLeft() + dx;int top = ivDrag.getTop() + dy;int right = ivDrag.getRight() + dx;int bottom = ivDrag.getBottom() + dy;//判斷圖片是否移出屏幕if (left < 0 || right > windowWidth || top < 0|| bottom > windowHeight - 20) {break;}//判斷圖片位于屏幕上半部分還是下半部分if (top > windowHeight / 2) {tvBottom.setVisibility(View.INVISIBLE);tvTop.setVisibility(View.VISIBLE);} else {tvBottom.setVisibility(View.VISIBLE);tvTop.setVisibility(View.INVISIBLE);}//重新設定圖片的位置ivDrag.layout(left, top, right, bottom);//重新獲取起始點坐標startX = (int) event.getRawX();startY = (int) event.getRawY();break;case MotionEvent.ACTION_UP://記錄拖拽結束后的坐標點Editor edit = sp.edit();edit.putInt("lastX", ivDrag.getLeft());edit.putInt("lastY", ivDrag.getTop());edit.commit();break;default:break;}return true;}});-----------------獲取屏幕寬高WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);final int windowWidth = wm.getDefaultDisplay().getWidth();final int windowHeight = wm.getDefaultDisplay().getHeight();3. 初始化圖片位置LayoutParams params = (LayoutParams) ivDrag.getLayoutParams();params.leftMargin = lastX;params.topMargin = lastY;ivDrag.setLayoutParams(params);if (lastY > windowHeight / 2) {tvBottom.setVisibility(View.INVISIBLE);tvTop.setVisibility(View.VISIBLE);} else {tvBottom.setVisibility(View.VISIBLE);tvTop.setVisibility(View.INVISIBLE);}注意:此處不能使用該方法: ivDrag.layout(lastX, lastY, lastX + ivDrag.getWidth(), lastY + ivDrag.getHeight());因為當前還沒有測量好, 所以不能直接調用layout. 順序是measure,layout,ondraw

• 使用WindowManager設置歸屬地位置

  int lastX = sp.getInt("lastX", 0); int lastY = sp.getInt("lastY", 0);params.gravity = Gravity.TOP + Gravity.LEFT; //注意要將重心設置在左上方,默認位于屏幕中央 params.x = lastX; params.y = lastY;

• 半透明效果處理

  1. 清單文件中增加樣式, 將Activity設置為全透明<activityandroid:name=".activity.DragViewActivity"android:theme="@android:style/Theme.Translucent.NoTitleBar" />2. 將根布局的背景設置為半透明顏色

• 雙擊事件

  /*** 雙擊* @param view*/ public void onClick(View view) {if (firstClickTime > 0) {if (System.currentTimeMillis() - firstClickTime < 500) {System.out.println("雙擊");firstClickTime = 0;return;}}firstClickTime = System.currentTimeMillis(); }

• 多擊事件

  設置->關于手機->"Android 版本",多次點擊后會跳轉頁面 查看系統源碼Settings, 搜索"Android 版本"字符串,查找相關代碼,拷貝到自己的項目中long[] mHits = new long[3];//數組長度為點擊次數/*** 多次點擊* * @param view*/ public void onClick(View view) {// src 源數組// srcPos 開始拷貝的位置// dst 目標數組// dstPos 目標數組的起始拷貝位置// length 拷貝的數組長度System.arraycopy(mHits, 1, mHits, 0, mHits.length - 1);//拷貝數組mHits[mHits.length - 1] = SystemClock.uptimeMillis();if (mHits[0] >= (SystemClock.uptimeMillis() - 500)) {System.out.println("是男人!!!");mHits = new long[3];} }

• 雙擊居中

  //圖片設置為屏幕居中 ivDrag.layout(windowWidth / 2 - ivDrag.getWidth() / 2,ivDrag.getTop(),windowWidth / 2 + ivDrag.getWidth() / 2,ivDrag.getBottom());//在sp中記錄位置 Editor edit = sp.edit(); edit.putInt("lastX", ivDrag.getLeft()); edit.putInt("lastY", ivDrag.getTop()); edit.commit();注意: 為了能響應點擊事件,需要在onTouch中返回false,將事件傳遞給onClick

• 窗體觸摸移動

  1. 為了獲取觸摸事件,首先需要去掉WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE2. 其次設置params.type = WindowManager.LayoutParams.TYPE_Phone;3. 增加權限 <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>4. 移動邏輯處理case MotionEvent.ACTION_MOVE:int dx = (int) (event.getRawX() - startX);int dy = (int) (event.getRawY() - startY);params.x += dx;params.y += dy;//控制圖片不要超出屏幕邊界if (params.x < 0) {params.x = 0;}//控制圖片不要超出屏幕邊界if (params.y < 0) {params.y = 0;}//控制圖片不要超出屏幕邊界if (params.x > wm.getDefaultDisplay().getWidth()- view.getWidth()) {params.x = wm.getDefaultDisplay().getWidth()- view.getWidth();}//控制圖片不要超出屏幕邊界if (params.y > wm.getDefaultDisplay().getHeight()- view.getHeight()) {params.y = wm.getDefaultDisplay().getHeight()- view.getHeight();}System.out.println("當前位置:" + params.x + ";" + params.y);wm.updateViewLayout(view, params);//更新圖片的顯示位置startX = (int) event.getRawX();startY = (int) event.getRawY();break;

總結

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