來電監聽
創建後臺服務 AddressService public 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 { @Override public 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,點擊後啟動或停止service
判斷服務是否在後臺運行,更新checkbox
public static boolean isServiceRunning(String serviceName, Context ctx) { ActivityManager am = (ActivityManager) ctx .getSystemService(Context.ACTIVITY_SERVICE); List runningServices = am.getRunningServices(100);//獲取所有後臺運行的服務 for (RunningServiceInfo runningServiceInfo : runningServices) { String className = runningServiceInfo.service.getClassName(); if (className.equals(serviceName)) { return true; } } return false; }
去電監聽
- 靜態註冊廣播
注意添加權限: 問題: 當開關關閉時,仍然能顯示去電地址信息
- 動態註冊廣播
- 當啟動後臺服務時,註冊廣播,服務停止後,註銷廣播,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,查看佈局樣式, 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Toast private 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, 如果電話處於空閒狀態,就從WindowManager中刪除View case TelephonyManager.CALL_STATE_IDLE: if (wm != null && view != null) { wm.removeView(view); } break;
自定義Toast樣式
1. 佈局文件 電話圖標: @android:drawable/ic_menu_call 2. 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() { @Override public 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DragViewActivity 1. 佈局文件: 2. 拖拽事件監聽 ivDrag.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: //獲取起始點座標 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; } //判斷圖片位於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); //重新獲取起始點座標 startX = (int) event.getRawX(); startY = (int) event.getRawY(); break; case MotionEvent.ACTION_UP: //記錄拖拽結束後的座標點 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,默認位於屏幕中央 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 2. 將根佈局的背景設置為半透明顏色
雙擊事件
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->關於手機->"Android 版本",多次點擊後會跳轉頁面 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 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_TOUCHABLE 2. 其次設置params.type = WindowManager.LayoutParams.TYPE_Phone; 3. 增加權限 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;
關鍵字: 監聽 intent-filter 第五十一