鎴戠殑android 绗?零澶? Activity(涓

鎴戠殑android 绗?0澶?- Activity(涓?

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鍏€?/span>Activity鐢熷懡鍛ㄦ湡

Activity鏈変笁涓姸鎬侊細

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褰揂ctivity浠庝竴绉嶇姸鎬佽浆鍙樺埌鍙︿竴绉嶇姸鎬佹椂锛屼細璋冪敤浠ヤ笅淇濇姢鏂规硶鏉ラ€氱煡杩欑鍙樺寲锛?/span>

voidonCreate(BundlesavedInstanceState)

voidonStart()

voidonRestart()

voidonResume()

voidonPause()

voidonStop()

voidonDestroy()

鎴戠殑android 绗?零澶? Activity(涓

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杩欎竷涓柟娉曞畾涔変簡Activity鐨勫畬鏁寸敓鍛藉懆鏈熴€傚疄鐜拌繖浜涙柟娉曞彲浠ュ府鍔╂垜浠洃瑙嗗叾涓殑涓変釜宓屽鐢熷懡鍛ㄦ湡寰幆锛?/span>

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lActivity鐨?/span>鍙鐢熷懡鍛ㄦ湡鑷?/span>onStart()璋冪敤寮€濮嬬洿鍒扮浉搴旂殑onStop()璋冪敤缁撴潫銆傚湪姝ゆ湡闂达紝鐢ㄦ埛鍙互鍦ㄥ睆骞曚笂鐪嬪埌Activity锛屽敖绠″畠涔熻骞朵笉鏄綅浜庡墠鍙版垨鑰呬篃涓嶄笌鐢ㄦ埛杩涜浜や簰銆傚湪杩欎袱涓柟娉曚箣闂达紝鎴戜滑鍙互淇濈暀鐢ㄦ潵鍚戠敤鎴锋樉绀鸿繖涓?/span>Activity鎵€闇€鐨勮祫婧愩€備緥濡傦紝褰撶敤鎴蜂笉鍐嶇湅瑙佹垜浠樉绀虹殑鍐呭鏃讹紝鎴戜滑鍙互鍦?/span>onStart()涓敞鍐屼竴涓?/span>BroadcastReceiver鏉ョ洃鎺т細褰卞搷UI鐨勫彉鍖栵紝鑰屽湪onStop()涓潵娉ㄦ秷銆?/span>onStart()鍜屄?/span>onStop()鏂规硶鍙互闅忕潃搴旂敤绋嬪簭鏄惁涓虹敤鎴峰彲瑙佽€岃澶氭璋冪敤銆?/span>

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lActivity鐨?/span>鍓嶅彴鐢熷懡鍛ㄦ湡鑷?/span>onResume()璋冪敤璧凤紝鑷崇浉搴旂殑onPause()璋冪敤涓烘銆傚湪姝ゆ湡闂达紝Activity浣嶄簬鍓嶅彴鏈€涓婇潰骞朵笌鐢ㄦ埛杩涜浜や簰銆?/span>Activity浼氱粡甯稿湪鏆傚仠鍜屾仮澶嶄箣闂磋繘琛岀姸鎬佽浆鎹?/span>鈥斺€?/span>渚嬪褰撹澶囪浆鍏ヤ紤鐪犵姸鎬佹垨鑰呮湁鏂扮殑Activity鍚姩鏃讹紝灏嗚皟鐢?/span>onPause()鏂规硶銆傚綋Activity鑾峰緱缁撴灉鎴栬€呮帴鏀跺埌鏂扮殑Intent鏃朵細璋冪敤onResume()鏂规硶銆傚叧浜庡墠鍙扮敓鍛藉懆鏈熷惊鐜殑渚嬪瓙璇疯PPT涓嬫柟澶囨敞鏍忋€?/span>

鎴戠殑android 绗?零澶? Activity(涓

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涓冦€乷nSaveInstanceState()鍜?onRestoreInstanceState()鏂规硶

Activity鐨刼nSaveInstanceState()鍜?onRestoreInstanceState()骞朵笉鏄敓鍛藉懆鏈熸柟娉曪紝瀹冧滑涓嶅悓浜巓nCreate()銆乷nPause()绛夌敓鍛藉懆鏈熸柟娉曪紝瀹冧滑骞朵笉涓€瀹氫細琚 Е鍙戙€傚綋搴旂敤閬囧埌鎰忓鎯呭喌锛堝锛氬唴瀛樹笉瓒炽€佺敤鎴风洿鎺ユ寜Home閿級鐢辩郴缁熼攢姣佷竴涓狝ctivity鏃讹紝onSaveInstanceState()鎵嶄細琚皟鐢ㄣ€備絾鏄綋鐢ㄦ埛涓诲姩鍘婚攢姣佷竴涓狝ctivity鏃讹紝渚嬪鍦ㄥ簲鐢ㄤ腑鎸夎繑鍥為敭锛宱nSaveInstanceState()灏变笉浼氳璋冪敤銆傚洜涓哄湪杩欑鎯呭喌涓嬶紝鐢ㄦ埛鐨勮涓哄喅瀹氫簡涓嶉渶瑕佷繚瀛楢ctivity鐨勭姸鎬併€傞€氬父onSaveInstanceState()鍙€傚悎鐢ㄤ簬淇濆瓨涓€浜涗复鏃舵€х殑鐘舵€侊紝鑰宱nPause()閫傚悎鐢ㄤ簬鏁版嵁鐨勬寔涔呭寲淇濆瓨銆?/span>

鍙﹀锛屽綋灞忓箷鐨勬柟鍚戝彂鐢熶簡鏀瑰彉锛孉ctivity浼氳鎽ф瘉骞朵笖琚噸鏂板垱寤猴紝濡傛灉浣犳兂鍦ˋctivity琚懅姣佸墠缂撳瓨涓€浜涙暟鎹紝骞朵笖鍦ˋctivity琚噸鏂板垱寤哄悗鎭㈠缂撳瓨鐨勬暟鎹€傚彲浠ラ噸鍐橝ctivity鐨刼nSaveInstanceState()鍜?onRestoreInstanceState()鏂规硶锛屽涓嬶細

public class聽PreferencesActivity聽extends Activity {

聽聽聽 private String name;

聽聽聽 protected void聽onRestoreInstanceState(Bundle聽savedInstanceState) {

聽 name=聽savedInstanceState.getString("name");聽//琚噸鏂板垱寤哄悗鎭㈠缂撳瓨鐨勬暟鎹?/span>

聽聽super.onRestoreInstanceState(savedInstanceState);

聽聽聽 }

聽聽聽 protected void聽onSaveInstanceState(Bundle聽outState) {

聽聽outState.putString("name","liming");//琚?/span>鎽ф瘉鍓嶇紦瀛樹竴浜涙暟鎹?/span>

聽聽super.onSaveInstanceState(outState);

聽聽聽 }

}

涓嬭浇瑙嗛浠ｇ爜

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鎴戠殑android 绗?零澶? Activity(涓

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