Android 最基础生命周期及旋转屏幕问题

 public class MainActivity extends Activity {

     private static final String TAG ="MainActivity";

     @Override
     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         Log.d(TAG, "onCreate");
     }

     @Override
     protected void onStart() {

         super.onStart();
         Log.d(TAG, "onStart");
     }

     @Override
     protected void onRestart() {

         super.onRestart();
         Log.d(TAG, "onRestart");
     }

     @Override
     protected void onResume() {

         super.onResume();
         Log.d(TAG, "onResume");
     }

     @Override
     protected void onPause() {

         super.onPause();
         Log.d(TAG, "onPause");
     }

     @Override
     protected void onStop() {

         super.onStop();
         Log.d(TAG, "onStop");
     }

     @Override
     protected void onDestroy() {

         super.onDestroy();
         Log.d(TAG, "onDestroy");
     }

     @Override
     public void onConfigurationChanged(Configuration newConfig) {

         super.onConfigurationChanged(newConfig);
         Log.d(TAG, "onConfigurationChanged");
     }

Activity各个生命周期

启动：

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6gEI2for8515d+q8pp3VIIOYSxFaJVMI2+/NXTq4HVCTum5RJifIzy9hmm9uM2hSi8dZF5dWa7QizCjzbtNijEMprO6nVdXlOI5BN+q2XbQtTbjQrxWlM6JWgfophhpeG5mL7l9W4hsztMoGwr9lSwU5QWmdEjU3VbIZT/M5wP5flynjhDp3VzDmGqaRlqnDsqJ3RvX5vM4an3mczfmwI/oocj1hWi7KDTAajytMKilcDa/babT5lmHFy4f4RDLWp0awohauYL9VYKTNdQCLspXQX8LFOeHBVj1cYezptnT8Voq94DrHc1Dy8tNKNXKxLzXpYLP3OtWhYxRtjzFluLQ8wJ5p3qeZxbO61bGT28u+fA5g2JlZm1jn/VjwP3dnB6kZFM4YTm706ESD4hDUztUQD1nepcb6UJK88IwmLcqfmnSuDxkVao4SOCV0QvA4J74R/V8xrP0Bc7z1vq7XKkC3ff3To/mK3baEpXgf8x9z08PmKcSN7PHkvE5DOgQnwLafZwlpUccjzFM5pHF4acESoEIYQQDBWCEEIIhgpBCCEEQ4UghBCCoUIQQgjBUCEIIYRgqBCEEEIwVAhCCCEYKgQhhBAMFYIQQgjmH5Fm6yWYTTipAAAAAElFTkSuQmCC" 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按返回键：

aaarticlea/png;base64,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" alt="" />

按home键

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAhQAAAAyCAIAAACLctWwAAAIlklEQVR4nO2dSbKsKhCGXRcLYhtugYmrMN7oRTCvTThxCWcR3IECCZlYYFlhU/8Xd1AHpTFpfhqv2TmJ8b//xXAAAADAOdeJoRAPAAAAG0A8AAAANAPxAAAA0AzEAwAAQDMQDwAAAM1APAAAADQD8QAAANAMxAMAAEAzEA8AAADN7BOPSXd91/Wdeu0KPIQl5dGyC0b1Xdd33WDm65T2xli92FMw9c+i00Zi1Ls2M7/UWwPOL9VlTbedmoxa7/xF/FCw/NPT2eW5InvEw+peW+ecm82gzF9r4CEY1WvrjMpbv1F9ltEVSvsAuKlrmV/qk773YfQvYUelhqW1JL8/ZjaD1uP75vcNs1zT1GdBrBFGBkDZJx5+ZpTYtzbwQPIRzQq97hqlDROZQesx5pLMNMlkR09GvZmBzmbosomqHf0SYU0qaGGXrKjkjJbps19n5L0lM7WQu8hapHwGJ0ePBhnVkl0h+vnYUelxaSRGDVoPBVM7Jy3dZjN03aDyJbJzq50nLS6IQ+MpmIVllKyk6VVhNSmmuQQuhaG/7wtb3hXrgg4CfmDh9Wu1N2NmH96Y63vNTdi1bSWur+sDj4ONaKPWQz72XaC0yzrJZxGkgmjV0v78j3X9JGlhLCptpv73bIYwUkQL2Cm03TVBOaNJx5GIFG99BGLqQu7FomaDfiF6FG87xnHtmtNhOyrzZ9Ro55fS02zCKoSZ2pO1VavJAB0e0D9sNIXceLbMkmVE/9y4VEqTloT+vidSp3tXF25ZDpbrl5gxqr7QmJt6zR3YIx6z8XNnN1nbHHggQodcG8Sku6D2Z5dW7OepMKyt099p/Ly7JB5kCpOr3XqJ5EhvjuIhZBSNxktITb2Re83jF6OTyW+i/VcVj6XA2sbBRTC1h7VVciZHtD9uhaU1lVMtHjEp1pxqxCMGXrMimhA7XaEuyFQyrifE+hXFgzfmtl5zB/aIR2Is357qAw+Eiwc5wFjr5vzSfkE8Ni5Z3Ss1JBOoIAlsSMrFg86GyuKxVTAOf/y30bM52gXHLP8I1k6OVh83tadGPPy7HmTA+lw8/JxAOiCsEA/njBrMTITtvrSKB18xS/UriweN5ff9HnaSuu/MQxhk6wMPRGj9cdkY1qTnl3bpfj6Xno/U64OUxWOZtpDem64SPGEBHlfipA/EtwmKKw9BfZMSbuYulZNWyqTXS2J0Eigv8EP0C7Cp/U56ceO9eKSjFZn98MazZRYuEqVD+HL3SdO0ozIvYVi8H1KnaxIPqX5DBZGX7sTGXOw1N2XXmYe4vVAfeATJHC0/ikwPVy9Q2mQJLBwa92HsXn6vrdDvijhxUE5OOEcbE4wH5uvs2J+BK7UkUspo0uoVDRsPP95sMXH7Z9aLBQjjlxA9yYimIEQ/G0VM5Is3mJmb2okG5DXVqaGUpth4nGCWQk2tlzLtl+8smZpr4U3h+05CXegpe6kkRJfqNzZmZV6aRy+MMA949x3/SRAEpEU3AJ+8qA2eC8QDrIQ1x1W2hsD5yBNwABzEAwAAwA4gHgAAAJqBeAAAAGgG4gEAAKAZiAcAAIBmIB4AAACagXgAAABoBuIBAACgGYgHAACAZiAeAAAAmoF4AAAAaGafeCTuLdsDD2FJWfhem8k9Sl6htDdGcFn68+i0kZBvcRegriC27vnYTVBNRq13/iakOpS6veOmb7DPn0f8Tjhx/1AbeAiLb07Jv03+7egrlPYB7P+u6ofenC7rDEoRr3/qMEdJJd8b7L4vmOWapj6J6EalzvvvD7JPPART1gceSNHj5uVKG75OOmg9kkZJZ5rJF0yNejMDJZ4JMh8b0TNB7v+SuPrhGS3T5+CxIBsNmbt4lrtI4sBA9GUi+pAflfdSJUY/HzsqPXqHWoPWzA0tWYjwpdtshq4bVL5Edm61c/ZtfNZ4CmZhGSUraXpVWE2KaS6B3hHeExblbHlXqgvDVxul1sjS3O5Kj2HXtpW4vq4PPA42oo1aD3mFXaC0yzrJZxGkgk5tvCfB1WNov7jILs5AZV97bjZDGCmIC5rJ+qvRD52Q0aQ76gOq7EmwkHuxqNwjmxQ9ircdO+qI7TqaEbCjMn9GjXZ+KT0R3+PM1B7uMjkO0HQYWp1B0VGMN54GN7T0z41LpTRpSTLnkjdE6nQbdSEOEbmJxDS3utJj2CMes/FzZzdZ2xx4IEKHjJU3+m58dmm/4MOcOkTL2vd6ieTIvaeV3dAWHZVTU2/kXvP4xeiiJ8cLi0dw9RjEQzC1p8aHORGh3Nt8Tr0P85DUO7fqcpoh8JoV0USTD/N4Hzkc4kaQ09zqSo9hj3gkDt+jU9/awAPh4sFdcJ9f2i+Ix8Ylq3ulhnQC5Z+LDUm5eNCeUxaPts7wrr/JUTZcSV8B/wjWTo5WHze1p0Y8EufKkmPzSL14+IFMOiCsEA+/gROF7b7sE4/tDe2SeJS70mPYd+YhDLL1gQcitP64BxLWpOeXlu6feoVLmtf6IGXxYL7BM6/UMfHoBJtNGOPbBMWVh6C+SQk3c5fKSStl0tGtN49OAuV9rRD9Amxqv5Ne3HgvHunARGY/vPFsmYWLROkQvtx90jTtqMzrES6KpU5XqgvpTrkxC3dudaXHsOvMQ9xeqA88gmSOlh9FpsdZFygt2T8VD437MHYvv9dXP/2uiBMH5eT4brQxwXhgvs6O/cGdUksipYwmrV7RsHHH9s0WE7d/Zr1YgDB+CdGTjGgKQvSzUcREvniDmbmpnWhAXlOdGkppio3HCWYp1NR6KdN++c6SqbkW3hS+ryjUhZ4Sm6fW4CaS9irFrvQ08J8EQUBeswOw/0XtH+UnuhLEA6yEidJVtobA+SRvdZ9dmNvwI10J4gEAAKAZiAcAAIBmIB4AAACagXgAAABoBuIBAACgGYgHAACAZiAeAAAAmoF4AAAAaAbiAQAAoJl/Boq/tprHUPgAAAAASUVORK5CYII=" alt="" />

按home键后再次从图标启动

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAfEAAABDCAIAAAADJavgAAAG2ElEQVR4nO2dzbWsKBRGjYuASMMUmBiFq0e9FvNKwokhdBD2QPkHxSrfK6X2Hnm1FDwcPkDr1teN//y7AABAE3RoOgBAM6DpAADtgKYDALQDmg4A0A5oOgBAOxxq+iS7vuv6Trze2nkJ65VHnRxQou+6vusGNd+ntg9GyzWemVD/LDJMEiWOcmZ+icMAzi/RRal7npqCzn7y9zA5307mH2i6lr3Uy7IssxqE+u/szktQopd6USIOtxJ9VNAdatsAaahrmV9CTu8X/OHpfwg9CjGs2RJsf8ysBinH4/T7E2G5Z6i/hBJmZNVj90ZYbpb2h5pu7tYruH7nhcRCozOd4R61NSuAbpBydKUE8zL7mb6TkxIH87VZDV00rdOjmVZsl7JDVBesP/IFrZNNO0OJRCoKdab0LFuVXHF7p7uAjGItrnD699GjkOOaJEoMUg6FUC9LbqEzq6HrBhEvKJdli/Mks8tHmzyFsCQFBetO/2hm7ZW95rpzrYy//VySxVCpLZyme83xYd7m0mNto0Hp9SJ/Ku2Pnr1kF4n1O68jEZpRyiGWpBvUdl1VmCKsgntDyNqWZmNbbeSGKFdVmxbe9qwG24FdBPSkzdHtgvmCJukSyKvedgteqAulF6saJWXhdDem6tHJzT0nj3oU6j8lRj2/hJxmZefsSagNUa5q6emmvUFzsy4U+eTZC0tUkP/nzqHSNf2a+NvPJNfpCm1hNX1Ww7bz87wtpIeWRnNsl//L8/RZjXYE0/r0zgvJ9JMtppM0wf1+bfOtG+j1Jgrmk8qM9iVN9+YL8SC0HfJK9D8cZUxYkAtaWkM/1Dul19x+8XRvehIMyXfV9LXCUi9W0zOhNiS5mp8Guuc5+327WtPdpZJ0qtF0t/OeDXGKbKcrtIV5Lefm1J/nbSk9MoPlX9Z0LxUm6Ya12p0Xkmq693B8C9P3a/sHNH3nkJa9EEMw9bNKnShFrOn+jLus6XsVS0lv//D0aEJ0Qykxt6D1tPjNl4baUKPpTkeslHyu6Waozr18qtB0M2N1481zOafpVkD6eKAtsZ+35fT4vqZrmdG++p0XkklKtyCyC6vv19Z7NmcHnkBAtxspa/o6wnudKpxTG+wq0i0nveRwL5CL8/TMoBjUcLf0XD39Rpnkdih7urczv8i1p9+A3SF5yb2rP9b0sBt7k5I0efbCkmp36b1rufuE19SjUC/59Cfpy5LvdEea7mXmZ3lbTo+8pl+a9kfP07NrjfqdVxDMaOK3T+GLhRvU1ntSn31P2FtJXbe378aZpf2S1crgRcqo3QXdO9JtLmleewqxXqRU0CTFywXWPVg/WG+m8Y+i5ypg8zhzelCQf4XM6d9GeCEy1RvUnIZ6yQYwbalODKVrZpNnyYSl0FLboWhIzn+yFOp0iHoo6dOPTFvIKfqmwKyG3NvL03mbSQ+/ceMHMlemPf9z9JtMTczF4Hre/yYr3AM0/RexM/S7PN+A7xN87fXblYH3QdMBANoBTQcAaAc0HQCgHdB0AIB2QNMBANoBTQcAaAc0HQCgHdB0AIB2QNMBANoBTQcAaAc0HQCgHfCY5qesHHhMp+Ax3T5ecwjxQYvcAzym8ZiOwWM6AI/p1nG/n15nGVjF9yKMxzQe03hM74LH9EN5x2PacD/n6HrwmMZjGo/pXfCYfiQnPKaLEnEn5+h68JjGYxqP6V3wmH4iZ/xIHf6Lh5s5R9eDxzQe03hM74LH9BN5T9P3n8p+1Tm6Hjym8ZjGY3oXPKYfSbXHdPhE0QXqZs7R9eAxjcc0HtN74DH9UCo9pk9ZP3/ROboe/ufoN8FjGvLgMf100PRfBI9pSMBjuhHQdACAdkDTAQDaAU0HAGgHNB0AoB3QdACAdkDTAQDaAU0HAGgHNB0AoB3QdACAdkDTAQDaAU0HAGgHPKb5KSsHHtMpeEy3jf31xGYyH49pPKZj8JgOwGO6ddzP1vuGdo8Fj2k8pvGY3gWP6Yfyjsd0YC5Yk7fORNMFrdi7a7vSZ+Axjcc0HtO74DH9SE54TFtNn9XgLMOq8zYwwrTeSWmnO9WVPgCPaTym8ZjeBY/pJ3LGj9QZfmUm6cd5m9f0pNOd60ofgMc0HtN4TO+Cx/QTOafpVkD6eKAt4eVtpaaf60ofgMc0HtN4TO+Cx/QjqfaYjp6nJ6v/4Jq5vPWHhG5H08td6VrwmMZjGo/pPfCYfiiVHtPRNwVmNQTvPGvy1nxSqJfs+k6Oxd5d6ErXwv8c/SZ4TEMePKafDpr+i+AxDQl4TDcCmg4A0A5oOgBAO6DpAADtgKYDALQDmg4A0A5oOgBAO6DpAADtgKYDALQDmg4A0A7/A0Km5DZSwqAiAAAAAElFTkSuQmCC" alt="" />

竖屏切横屏：

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横屏切竖屏：

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" 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在AndroidManifest.xml 添加

android:configChanges="orientation"

切屏时和不加一样

根据Android SDK描述，在API13及以上还要加上screenSize。因为横竖屏变化，屏幕横竖尺寸也变化

android:configChanges="orientation|keyboardHidden|screenSize"

"orientation" 	The screen orientation has changed — the user has rotated the device.

Note: If your application targets API level 13 or higher 
      (as declared by the minSdkVersion and targetSdkVersion attributes),
      then you should also declare the "screenSize" configuration,
      because it also changes when a device switches between portrait and landscape orientations.

然后再Activity中添加方法：

@Override
	public void onConfigurationChanged(Configuration newConfig) {
		Log.d(TAG, "onConfigurationChanged");
		super.onConfigurationChanged(newConfig);

	}

那么再旋转屏幕时，就会执行onConfigurationChanged方法

改变Activity的配置可能会使Activity重启动（默认情况下会重启），如果不想重新启动就需要配置configChanges属性，它可以配置多个用“|”分格。

当 在activity加上android:configChanges="keyboardHidden|orientation"属性,就不会重启 activity.而只是调用onConfigurationChanged(Configuration newConfig).这样就可以在这个方法里调整显示方式.

在xml文件里面可以进行配置configChanges也可以在代码中动态配置

android:configChanges=["mcc", "mnc", "locale",
                                 "touchscreen", "keyboard", "keyboardHidden",
                                 "navigation", "screenLayout", "fontScale",
                                 "uiMode", "orientation", "screenSize",
                                 "smallestScreenSize"]

还有屏幕旋转的相关配置：android:screenOrientation 这个属性是控制Activity启动时候的方向

android:screenOrientation=["unspecified" | "behind" |
                                     "landscape" | "portrait" |
                                     "reverseLandscape" | "reversePortrait" |
                                     "sensorLandscape" | "sensorPortrait" |
                                     "userLandscape" | "userPortrait" |
                                     "sensor" | "fullSensor" | "nosensor" |
                                     "user" | "fullUser" | "locked"]

android:screenOrientation="landscape"---控制Acitvity为横屏显示。

android:screenOrientation="portrait"---控制Activity为竖屏显示

unspecified--系统默认显示

user---用户当前的首选方向

behind---与当前堆栈下面的Activity同向

sensor---根据传感器定（常用）

nosensor---忽略传感器；系统根据unspecified显示