技术问答android涓璦ctivityview鎬庝箞鑾峰彇 - 扬州沐宇科技

鍦ˋndroid涓紝鍙互閫氳繃浠ヤ笅鏂规硶鑾峰彇Activity鐨勮鍥撅細

浣跨敤findViewById()鏂规硶锛氬彲浠ラ€氳繃鍦ˋctivity涓皟鐢╢indViewById()鏂规硶鏉ヨ幏鍙栬鍥句腑鐨勭壒瀹氳鍥剧粍浠躲€備緥濡傦紝瑕佽幏鍙栦竴涓猅extView鐨勫紩鐢紝鍙互浣跨敤浠ヤ笅浠ｇ爜锛?/li>

TextView textView = findViewById(R.id.textView);

浣跨敤getRootView()鏂规硶锛氬彲浠ラ€氳繃璋冪敤Activity鐨刧etRootView()鏂规硶鏉ヨ幏鍙栨暣涓狝ctivity鐨勬牴瑙嗗浘銆備緥濡傦紝瑕佽幏鍙栨暣涓狝ctivity鐨勬牴瑙嗗浘锛屽彲浠ヤ娇鐢ㄤ互涓嬩唬鐮侊細

View rootView = getWindow().getDecorView().getRootView();

浣跨敤getContentView()鏂规硶锛氬彲浠ラ€氳繃璋冪敤Activity鐨刧etContentView()鏂规硶鏉ヨ幏鍙朅ctivity鐨勫唴瀹硅鍥俱€備緥濡傦紝瑕佽幏鍙朅ctivity鐨勫唴瀹硅鍥撅紝鍙互浣跨敤浠ヤ笅浠ｇ爜锛?/li>

View contentView = getWindow().getDecorView().findViewById(android.R.id.content);

杩欎簺鏂规硶鍙互璁╂偍鍦ˋctivity涓幏鍙栬鍥撅紝浠ヤ究鍦ㄤ唬鐮佷腑瀵瑰叾杩涜鎿嶄綔鎴栦慨鏀广€?/p>