{"id":1279,"date":"2022-08-11T16:00:27","date_gmt":"2022-08-11T08:00:27","guid":{"rendered":"http:\/\/175.24.184.226\/?p=1279"},"modified":"2022-08-11T16:00:27","modified_gmt":"2022-08-11T08:00:27","slug":"android%e5%85%a5%e9%97%a8%e7%ac%94%e8%ae%b001","status":"publish","type":"post","link":"\/?p=1279","title":{"rendered":"Android\u5165\u95e8\u7b14\u8bb001"},"content":{"rendered":"<p>B\u7ad9\u6559\u7a0b\uff1a<a href=\"https:\/\/www.bilibili.com\/video\/BV1bu41197RE\">https:\/\/www.bilibili.com\/video\/BV1bu41197RE<\/a><br \/>\n\u7b14\u8bb0\u5730\u5740\uff1a<a href=\"http:\/\/note.youdao.com\/ynoteshare\/index.html?id=ac3916fa3cc3b035e9433d9564612f00&amp;type=note\">http:\/\/note.youdao.com\/ynoteshare\/index.html?id=ac3916fa3cc3b035e9433d9564612f00&type=note<\/a><br \/>\n\u524d\u8a00<\/p>\n<p>1\u3001\u5165\u95e8\u51c6\u5907<\/p>\n<pre><code>1.1 \u5b66\u4e60\u8fd9\u95e8\u8bfe\u7a0b\u9700\u8981\u51c6\u5907\u7684\u4e1c\u897f->java\u57fa\u7840\uff0c\u4e3a\u4ec0\u4e48\u9009\u62e9java\u8bed\u8a00\u800c\u4e0d\u662fkotlin\uff1f\n\n1.2 Android\u5bf9\u65b0\u624b\u7684\u53cb\u597d\u7a0b\u5ea6->\u4e0d\u53cb\u597d \u4e0a\u5b66\u65f6\u6211\u4eec\u8001\u5e08\u7684\u5efa\u8bae \u548c\u6211\u4e00\u8def\u8d70\u6765\u7684\u7ecf\u5386 \u4ee5\u53ca\u73b0\u5728\u57f9\u8bad\u73ed\u57f9\u8badAndroid\u7684\u6570\u91cf\n\n1.3 \u540e\u9762\u7684\u8bfe\u7a0b\u5b89\u6392->\u7531\u6d45\u5230\u6df1\n\n1.4 \u8bfe\u7a0b\u76ee\u6807->\u4ee5\u6700\u63a5\u5730\u6c14\u6700\u5bb9\u6613\u7406\u89e3\u7684\u65b9\u5f0f\u8bb2\u89e3\u8bfe\u7a0b\u7684\u77e5\u8bc6\u70b9\uff0c\u5728\u8bb2\u89e3\u5b8c\u77e5\u8bc6\u70b9\u4e4b\u540e\u5c3d\u91cf\u6bcf\u4e00\u4e2a\u77e5\u8bc6\u70b9\u90fd\u6709\u5b9e\u6218\u73af\u8282\u5e2e\u52a9\u5927\u5bb6\u52a0\u6df1\u8bb0\u5fc6\u548c\u7406\u89e3\n\n1.5 Android\u5f00\u53d1\u8005\u5b98\u7f51 https:\/\/developer.android.google.cn<\/code><\/pre>\n<p>2\u3001Android\u7cfb\u7edf\u7684\u6574\u4f53\u67b6\u6784\u548cAndroid\u5386\u53f2\u7248\u672c<\/p>\n<pre><code>2.1 Android\u662f\u4e00\u79cd\u64cd\u4f5c\u7cfb\u7edf\u8fd8\u662f\u4e00\u4e2a\u7f16\u7a0b\u8bed\u8a00\uff1f\n\n2.2 Android\u6574\u4f53\u67b6\u6784\u7684\u8ba4\u77e5 Android1->Android12 \u65e9\u671f\u7684Android\u7248\u672c\u7cfb\u7edf\u6f0f\u6d1e\u8f83\u591a \u5bb9\u6613\u88ab\u641e\u4e00\u4e9b\u9ed1\u79d1\u6280 \u52a0\u4e0a\u4e00\u4e9b\u65e0\u826f\u5f00\u53d1\u8005\u6216\u8005\u516c\u53f8\n\n    \u5bfc\u81f4\u5927\u5bb6\u6709\u4e00\u79cd\u5370\u8c61Android\u624b\u673a\u5f88\u5783\u573e\u5f88\u5361\u3002\u968f\u7740\u8c37\u6b4c\u4e0d\u65ad\u7684\u5bf9Android\u7cfb\u7edf\u7684\u66f4\u65b0\uff0c\u8d8a\u6765\u8d8a\u5b8c\u5584\uff0c\u4f53\u9a8c\u8d8a\u6765\u8d8a\u597d\n\n    \u767e\u5ea6\u767e\u79d1\u53c2\u8003\u8d44\u6599\uff1ahttps:\/\/baike.baidu.com\/item\/Android%E5%8E%86%E5%8F%B2%E7%89%88%E6%9C%AC\/1578450?fr=aladdin<\/code><\/pre>\n<p>\u7b2c\u4e00\u7ae0<\/p>\n<pre><code>1 Android\u5e94\u7528\u7684\u6574\u4f53\u67b6\u6784\n\n  \u767e\u5ea6\u767e\u79d1\u8d44\u6599\u53c2\u8003\uff1ahttps:\/\/baike.baidu.com\/item\/Android%E7%B3%BB%E7%BB%9F%E6%9E%84%E6%9E%B6\/15591610?fr=aladdin\n\n  \u6211\u4eec\u65e5\u5e38\u5f00\u53d1\u7684\u5c31\u662f\u5728\u5e94\u7528\u5c42\n\n2 \u642d\u5efaAndroid\u5f00\u53d1\u73af\u5883(Android Studio)\uff0c\u642d\u5efa\u5f00\u53d1\u73af\u5883\u662f\u6211\u4eec\u7684\u57fa\u7840\uff0c\u5982\u679c\u5f00\u53d1\u73af\u5883\u4e0d\u80fd\u642d\u5efa\u6210\u529f\uff0c\u90a3\u4e48\u4e5f\u5c31\u4e0d\u80fd\u7ee7\u7eed\u5f80\u4e0b\u5b66\u4e60\u4e86\n\n  Android Studio\u4e0b\u8f7d\u5730\u5740\uff1ahttps:\/\/developer.android.google.cn\/studio?hl=zh_cn\n\n3 \u521b\u5efa\u7b2c\u4e00\u4e2a\u5e94\u7528\u5e76\u4e14\u8fd0\u884c\u8d77\u6765\n\n  \u5b98\u7f51\u6587\u5b57\u6559\u7a0b->https:\/\/developer.android.google.cn\/training\/basics\/firstapp\/creating-project?hl=zh_cn\n\n4 \u8be6\u89e3\u5de5\u7a0b\u76ee\u5f55\u7ed3\u6784\n\n  \u4e3b\u8981\u8bb2\u89e3\u4e00\u4e9b\u5e38\u7528\u7684\u76ee\u5f55\uff0c\u5bf9\u4e8e\u4e00\u4e9b\u4e0d\u5e38\u7528\u7684\u76ee\u5f55\uff0c\u5c3d\u7ba1\u8bb2\u4e86\u5927\u5bb6\u4e5f\u4e0d\u5e38\u7528\uff0c\u8fc7\u51e0\u5929\u5c31\u53c8\u5fd8\u8bb0\u4e86\u3002\u4e0d\u8981\u6b7b\u8bb0\u786c\u80cc\u8fd9\u4e9b\u4e1c\u897f\n\n  \u5f00\u53d1\u8005\u6587\u6863\uff1ahttps:\/\/developer.android.google.cn\/guide\/topics\/resources\/providing-resources?hl=zh_cn\n\n  \u6e05\u5355\u6587\u4ef6AndroidManifest.xml \u5f00\u53d1\u8005\u6587\u6863https:\/\/developer.android.google.cn\/guide\/topics\/manifest\/manifest-intro?hl=zh_cn\n\n5 Android\u65e5\u5fd7\u8f93\u51fa\u7cfb\u7edfLog\u7684\u4f7f\u7528\n\n    5.1 \u7b80\u5355\u4f7f\u7528\n\n    5.2 log\u7b49\u7ea7\n\n    5.3 log\u63a7\u5236\u53f0\u7684\u8bb2\u89e3\n\n    5.4 log\u8fc7\u6ee4\u65b9\u5f0f\n\n    5.5 \u81ea\u5b9a\u4e49\u8fc7\u6ee4\u65b9\u5f0f<\/code><\/pre>\n<p>\u7b2c\u4e8c\u7ae0 \u5e38\u7528Ui\u7684\u8be6\u89e3<\/p>\n<pre><code> 1 View\u548cViewGroup\u7684\u533a\u522b\u548c\u8be6\u89e3\n\n   1.1 View\u662f\u6240\u6709\u7a7a\u95f4\u7684\u5b50\u7c7b\uff0c\u7528\u4e8e\u521b\u5efa\u4ea4\u4e92\u5f0f\u7684\u7ec4\u4ef6\n\n       \u4ece\u53e6\u5916\u4e00\u4e2a\u5c42\u9762\u4e0a\u8bb2\uff0cView\u4e0d\u80fd\u5305\u542b\u5176\u5b83\u63a7\u4ef6\uff0c\u4e0d\u662f\u4e00\u4e2a\u5bb9\u5668\n\n   1.2 ViewGroup\u7ee7\u627f\u81eaView\uff0c\u662f\u4e00\u4e2a\u5bb9\u5668\uff0c\u5176\u4e2d\u53ef\u4ee5\u5305\u542b\u5176\u5b83View\n\n   1.3 layout_width\u548cwidth\u7684\u533a\u522b\n\n   layout_width \u53ea\u6709\u4e09\u79cd\u9009\u62e9\u4e00\u4e2a\u662fwrap_content\u4e8c\u662fmatch_parent,\u4e09\u662f\u5177\u4f53\u503c\u3002\u4f7f\u7528\u8fd9\u4e2a\u5c5e\u6027\u7684\u524d\u63d0\u6761\u4ef6\u662f\u8fd9\u4e2aView\u5fc5\u987b\u6709\u7236View\uff0c\u5426\u5219layout_\u5f00\u5934\u7684\u76f8\u5173\u5c5e\u6027\u4e0d\u751f\u6548\u3002\n\n   layout_width\u5c31\u662f\u7236\u5e03\u5c40\u5141\u8bb8view\u6240\u5360\u7684\u5bbd\u5ea6\uff0c\u800cwidth\u662fview\u7684\u81ea\u8eab\u5bbd\u5ea6\u3002\u5728layout_width\u548cwidth\u90fd\u8bbe\u7f6e\u4e3a\u5177\u4f53\u6570\u503c\u7684\u65f6\u5019\uff0cwidth\u5176\u5b9e\u5c31\u65e0\u6548\u4e86\uff0c\u8fd9\u4e5f\u4e0d\u96be\u7406\u89e3\uff0c\u7236\u5e03\u5c40\u5df2\u7ecf\u7ed9\u4f60\u5206\u914d\u4e86\u5177\u4f53\u7684\u7a7a\u95f4\uff0c\n\n   \u4e0d\u8bbaview\u600e\u4e48\u8bbe\u7f6ewidth\uff0cview\u7684\u5bbd\u5ea6\u4e5f\u53ea\u80fd\u662flayout_width\u3002\n\n   width\u8fd9\u4e2a\u662f\u7528\u6765view\u7684\u5177\u4f53\u5bbd\u5ea6\u7684\uff0c\u4ee5\u50cf\u7d20\u4e3a\u5355\u4f4d\u3002\n\n 2 \u5e38\u89c1\u7684View\n\n   2.1 TextView<\/code><\/pre>\n<p>\u7528\u9014\uff1a\u663e\u793a\u6587\u672c\u7684\u63a7\u4ef6<br \/>\n\u53c2\u8003\u6587\u6863\uff1a<a href=\"https:\/\/developer.android.google.cn\/reference\/android\/widget\/TextView\">https:\/\/developer.android.google.cn\/reference\/android\/widget\/TextView<\/a><br \/>\n\u5e38\u7528\u5c5e\u6027\uff1a<br \/>\n1\u3001id-&gt;\u4e3a\u63a7\u4ef6\u8bbe\u7f6e\u4e00\u4e2aID\uff0c\u65b9\u4fbf\u6839\u636eid\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Java\u4ee3\u7801\u4e2d\u901a\u8fc7findViewById()\u7684\u65b9\u6cd5\u83b7\u53d6\u5230\u8be5\u5bf9\u8c61\uff0c\u7136\u540e\u8fdb\u884c\u76f8\u5173\u5c5e\u6027\u7684\u8bbe\u7f6e\u3002\u53c8\u6216\u8005XML\u6587\u4ef6\u8fdb\u884c\u6446\u653e\uff0c\u53c2\u8003\u7ec4\u4ef6\u7528\u7684\u4e5f\u662fid\uff01<br \/>\n2\u3001gravity-&gt;\u8bbe\u7f6e\u63a7\u4ef6\u7684\u65b9\u5411<br \/>\n3\u3001text-&gt;\u8bbe\u7f6e\u663e\u793a\u7684\u6587\u672c\u5185\u5bb9,\u6bd4\u8f83\u89c4\u8303\u7684\u5199\u6cd5\u662f\u628a\u5b57\u7b26\u4e32\u653e\u5728string.xml\u6587\u4ef6\u91cc\u9762\uff0c\u7136\u540e\u53bb\u5f15\u7528\u8d44\u6e90<br \/>\n4\u3001textColor-&gt;\u8bbe\u7f6e\u6587\u672c\u989c\u8272<br \/>\n5\u3001textStyle-&gt;\u8bbe\u7f6e\u5b57\u4f53\u98ce\u683c \u9ed8\u8ba4\u662f\u6ca1\u6709\u6548\u679c\uff0c\u6709\u4e09\u4e2a\u9009\u9879\u53ef\u4ee5\u9009 bold(\u7c97\u4f53) italic(\u659c\u4f53)<br \/>\n6\u3001background-&gt;\u63a7\u4ef6\u7684\u80cc\u666f\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u989c\u8272\uff0c\u56fe\u7247\uff0c\u5176\u5b83\u8d44\u6e90\u6587\u4ef6<br \/>\n7\u3001maxLines-&gt;\u6700\u591a\u53ef\u4ee5\u663e\u793a\u51e0\u884c\u6587\u672c<br \/>\n8\u3001android:ellipsize=\u201dstart\u201d\u2014\u2013\u7701\u7565\u53f7\u663e\u793a\u5728\u5f00\u5934 &quot;...pedia&quot;<\/p>\n<pre><code>  android:ellipsize=\u201dend\u201d\u2014\u2014\u7701\u7565\u53f7\u663e\u793a\u5728\u7ed3\u5c3e  \"encyc...\"\n\n  android:ellipsize=\u201dmiddle\u201d\u2014-\u7701\u7565\u53f7\u663e\u793a\u5728\u4e2d\u95f4 \"en...dia\"\n\n  android:ellipsize=\u201dmarquee\u201d\u2013\u4ee5\u6a2a\u5411\u6eda\u52a8\u65b9\u5f0f\u663e\u793a(\u9700\u83b7\u5f97\u5f53\u524d\u7126\u70b9\u65f6) \u8fd9\u4e2a\u7b49\u4f1a\u8bb2\u89e3\u6848\u4f8b\u4f7f\u7528TextView\u5b9e\u73b0\u8dd1\u9a6c\u706f\u6548\u679c\u4f1a\u7528\u5230<\/code><\/pre>\n<p>9\u3001includeFontPadding-&gt;\u5f53\u6211\u4eec\u8bbe\u7f6e\u6587\u5b57\u65f6\uff0c\u95f4\u8ddd\u4e0a\u4e0b\u5de6\u53f3\u7684\u95f4\u8ddd\u4f1a\u53d8\u5927 \u90a3\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u5c5e\u6027 \u7f29\u5c0f\u8fb9\u8ddd \u8fbe\u5230\u66f4\u597d\u7684Ui<br \/>\n10\u3001drawableStart|end|top|bottom -&gt;\u5f15\u7528\u4e00\u4e2a\u8d44\u6e90\u5728\u6539\u6587\u672c\u7684\u5bf9\u5e94\u7684<br \/>\n11\u3001autoLink -&gt;\u63a7\u5236\u662f\u5426\u81ea\u52a8\u627e\u5230 url \u548c\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u7b49\u94fe\u63a5\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u53ef\u70b9\u51fb\u7684\u94fe\u63a5\u3002\u9ed8\u8ba4\u503c\u4e3a\u201cnone\u201d\uff0c\u7981\u7528\u6b64\u529f\u80fd\u3002<\/p>\n<pre><code>   2.2 Button \n \u7528\u9014\uff1a\u6309\u94ae\u63a7\u4ef6,\u7528\u6765\u54cd\u5e94\u6309\u94ae\u7684\u70b9\u51fb\u4e8b\u4ef6\uff0c\u4e0d\u4e00\u5b9a\u4f7f\u7528\u8fd9\u4e2a\u63a7\u4ef6\u6765\u54cd\u5e94\n \u7b80\u4ecb\uff1a\u7ee7\u627f\u81eaTextView\u62e5\u6709TextView\u7684\u6240\u6709\u5c5e\u6027\n \u53c2\u8003\u6587\u6863\uff1ahttps:\/\/developer.android.google.cn\/guide\/topics\/ui\/controls\/button?hl=en\n \u70b9\u51fb\u4e8b\u4ef6\uff1a\u70b9\u51fb\u4e8b\u4ef6\u7684\u56db\u79cd\u54cd\u5e94\u65b9\u5f0f\uff0c\u5e38\u7528\u7684\u51e0\u79cd\u65b9\u5f0f\u3002\u89c6\u9891\u8be6\u89e3\uff0c<\/code><\/pre>\n<p>\u76f8\u5173\u63a7\u4ef6\uff1aImageButton  \u663e\u793a\u4e00\u4e2a\u5e26\u6709\u56fe\u50cf\uff08\u800c\u4e0d\u662f\u6587\u672c\uff09\u7684\u6309\u94ae \u5176\u5b83\u7528\u6cd5\u548cButton\u7c7b\u4f3c\uff0c\u4e0d\u8be6\u7ec6\u89e3\u91ca\uff0c\u5927\u5bb6\u4e3e\u4e00\u53cd\u4e09<\/p>\n<pre><code>   2.3 EditText\n    \u7528\u9014\uff1a\u8f93\u5165\u6846\uff0c\u7528\u6765\u8f93\u5165\u6587\u672c\u3002\n      \u53c2\u8003\u6587\u6863\uff1ahttps:\/\/developer.android.google.cn\/reference\/android\/widget\/EditText?hl=en<\/code><\/pre>\n<p>\u7b80\u4ecb\uff1a\u7ee7\u627f\u81eaTextView\u62e5\u6709TextView\u7684\u6240\u6709\u5c5e\u6027<br \/>\n\u5e38\u7528\u5c5e\u6027\uff1a<br \/>\n1\u3001inputType-&gt;\u8f93\u5165\u7c7b\u578b<br \/>\nandroid:inputType=\u201dnone\u201d<br \/>\nandroid:inputType=\u201dtext\u201d<br \/>\nandroid:inputType=\u201dtextCapCharacters\u201d \u5b57\u6bcd\u5927\u5199<br \/>\nandroid:inputType=\u201dtextCapWords\u201d \u9996\u5b57\u6bcd\u5927\u5199<br \/>\nandroid:inputType=\u201dtextCapSentences\u201d \u4ec5\u7b2c\u4e00\u4e2a\u5b57\u6bcd\u5927\u5199<br \/>\nandroid:inputType=\u201dtextAutoCorrect\u201d \u81ea\u52a8\u5b8c\u6210<br \/>\nandroid:inputType=\u201dtextAutoComplete\u201d \u81ea\u52a8\u5b8c\u6210<br \/>\nandroid:inputType=\u201dtextMultiLine\u201d \u591a\u884c\u8f93\u5165<br \/>\nandroid:inputType=\u201dtextImeMultiLine\u201d \u8f93\u5165\u6cd5\u591a\u884c\uff08\u5982\u679c\u652f\u6301\uff09<br \/>\nandroid:inputType=\u201dtextNoSuggestions\u201d \u4e0d\u63d0\u793a<br \/>\nandroid:inputType=\u201dtextUri\u201d \u7f51\u5740<br \/>\nandroid:inputType=\u201dtextEmailAddress\u201d \u7535\u5b50\u90ae\u4ef6\u5730\u5740<br \/>\nandroid:inputType=\u201dtextEmailSubject\u201d \u90ae\u4ef6\u4e3b\u9898<br \/>\nandroid:inputType=\u201dtextShortMessage\u201d \u77ed\u8baf<br \/>\nandroid:inputType=\u201dtextLongMessage\u201d \u957f\u4fe1\u606f<br \/>\nandroid:inputType=\u201dtextPersonName\u201d \u4eba\u540d<br \/>\nandroid:inputType=\u201dtextPostalAddress\u201d \u5730\u5740<br \/>\nandroid:inputType=\u201dtextPassword\u201d \u5bc6\u7801<br \/>\nandroid:inputType=\u201dtextVisiblePassword\u201d \u53ef\u89c1\u5bc6\u7801<br \/>\nandroid:inputType=\u201dtextWebEditText\u201d \u4f5c\u4e3a\u7f51\u9875\u8868\u5355\u7684\u6587\u672c<br \/>\nandroid:inputType=\u201dtextFilter\u201d \u6587\u672c\u7b5b\u9009\u8fc7\u6ee4<br \/>\nandroid:inputType=\u201dtextPhonetic\u201d \u62fc\u97f3\u8f93\u5165<br \/>\n\/\/\u6570\u503c\u7c7b\u578b<br \/>\nandroid:inputType=\u201dnumber\u201d \u6570\u5b57<br \/>\nandroid:inputType=\u201dnumberSigned\u201d \u5e26\u7b26\u53f7\u6570\u5b57\u683c\u5f0f<br \/>\nandroid:inputType=\u201dnumberDecimal\u201d \u5e26\u5c0f\u6570\u70b9\u7684\u6d6e\u70b9\u683c\u5f0f<br \/>\nandroid:inputType=\u201dphone\u201d \u62e8\u53f7\u952e\u76d8<br \/>\nandroid:inputType=\u201ddatetime\u201d \u65f6\u95f4\u65e5\u671f<br \/>\nandroid:inputType=\u201ddate\u201d \u65e5\u671f\u952e\u76d8<br \/>\nandroid:inputType=\u201dtime\u201d \u65f6\u95f4\u952e\u76d8<br \/>\n2\u3001hint-&gt;\u63d0\u793a\u6587\u672c<br \/>\n3\u3001android:textColorHint -&gt;\u8bbe\u7f6e\u63d0\u793a\u6587\u672c\u7684\u989c\u8272<br \/>\n4\u3001android:background=&quot;@null&quot;<br \/>\n5\u3001android:editable=&quot;false&quot; \u8bbe\u7f6eEditText\u4e0d\u53ef\u7f16\u8f91<\/p>\n<pre><code>   2.4 ImageView\n    \u7528\u9014\uff1a\u7528\u6765\u663e\u793a\u56fe\u7247<\/code><\/pre>\n<p>\u53c2\u8003\u6587\u6863\uff1a<a href=\"https:\/\/developer.android.google.cn\/reference\/android\/widget\/ImageView?hl=en\">https:\/\/developer.android.google.cn\/reference\/android\/widget\/ImageView?hl=en<\/a><br \/>\n\u5e38\u7528\u5c5e\u6027\uff1a<br \/>\n1\u3001src \u8bbe\u7f6e\u56fe\u7247\u7684\u8d44\u6e90\uff0csrc\u586b\u5165\u56fe\u7247\u65f6\uff0c\u662f\u6309\u7167\u56fe\u7247\u5927\u5c0f\u76f4\u63a5\u586b\u5145\uff0c\u5e76\u4e0d\u4f1a\u8fdb\u884c\u62c9\u4f38\u3002<br \/>\n2\u3001ScaleType \u5c5e\u6027\uff0c\u8fd9\u8fb9\u4ecb\u7ecd\u51e0\u4e2a\u5e38\u7528\u7684\u5c5e\u6027\uff0c\u5176\u5b83\u4e0d\u5e38\u7528\u7684\u5927\u5bb6\u53ef\u4ee5\u8bfe\u540e\u53bb\u8bd5\u4e00\u4e0b\uff1a<br \/>\n2.1 centerCrop \u5305\u6301\u6a2a\u7eb5\u6bd4\u7f29\u653e\u56fe\u7247\uff0c\u76f4\u81f3\u5b8c\u5168\u8986\u76d6ImnageView\u4e3a\u6b62\uff0c\u7f29\u653e\u540e\u7684\u56fe\u7247\u5982\u679c\u8d85\u8fc7ImageView\u5219\u505a<br \/>\n2.2 fitXY \u5c06\u56fe\u7247\u7f29\u653e\u81f3\u6574\u4e2a\u63a7\u4ef6\u5927\u5c0f\uff0c\u8fd9\u8fb9\u7684\u7f29\u653e\u7684\u6bd4\u4f8b\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u4f1a\u5bfc\u81f4\u56fe\u7247\u53d8\u5f62<\/p>\n<pre><code> 3 \u5e38\u89c1\u7684ViewGroup\n\n   3.1 FrameLayout\uff08\u5e27\u5e03\u5c40\uff09<\/code><\/pre>\n<p>\u5e27\u5e03\u5c40\u53ef\u4ee5\u8bf4\u662f\u6700\u7b80\u5355\u7684ViewGroup\u3002\u5f53\u6211\u4eec\u5f80\u91cc\u9762\u6dfb\u52a0\u63a7\u4ef6\u7684\u65f6\u5019\uff0c\u4f1a\u9ed8\u8ba4\u628a\u63a7\u4ef6\u653e\u5728\u5de6\u4e0a\u89d2\uff0c\u5982\u679c\u653e\u591a\u4e2a\u4f1a\u6709\u53e0\u52a0\u6548\u679c\uff0c\u8fd9\u79cd\u5e03\u5c40\u6ca1\u6709\u4efb\u4f55\u7684\u5b9a\u4f4d\u65b9\u5f0f\u3002<br \/>\n\u53c2\u8003\u6587\u6863\uff1a<a href=\"https:\/\/developer.android.google.cn\/reference\/android\/widget\/FrameLayout?hl=ch\">https:\/\/developer.android.google.cn\/reference\/android\/widget\/FrameLayout?hl=ch<\/a><\/p>\n<pre><code>   3.2 LinearLayout \uff08\u7ebf\u6027\u5e03\u5c40\uff09<\/code><\/pre>\n<p>android:orientation    \u5e03\u5c40\u65b9\u5411\uff0c\u6709\u4e24\u4e2a\u503c\u53ef\u9009\uff0chorizontal\u6c34\u5e73\uff0cvertical\u7ad6\u76f4<br \/>\nlayout_weight \u8bbe\u7f6e\u63a7\u4ef6\u7684\u6bd4\u4f8b<br \/>\n\u53c2\u8003\u6587\u6863\uff1a<a href=\"https:\/\/developer.android.google.cn\/reference\/kotlin\/android\/widget\/LinearLayout?hl=en\">https:\/\/developer.android.google.cn\/reference\/kotlin\/android\/widget\/LinearLayout?hl=en<\/a><\/p>\n<pre><code>   3.3 RelativeLayout\uff08\u76f8\u5bf9\u5e03\u5c40\uff09<\/code><\/pre>\n<p>android\uff1alayout_centerHrizontal \u6c34\u5e73\u5c45\u4e2d<br \/>\nandroid\uff1alayout_centerVertical \u5782\u76f4\u5c45\u4e2d<br \/>\nandroid\uff1alayout_centerInparent \u76f8\u5bf9\u4e8e\u7236\u63a7\u4ef6\u5b8c\u5168\u5c45\u4e2d<br \/>\nandroid\uff1alayout_alignParentBottom \u8d34\u7d27\u7236\u63a7\u4ef6\u7684\u4e0b\u8fb9\u7f18<br \/>\nandroid\uff1alayout_alignParentLeft \u8d34\u7d27\u7236\u63a7\u4ef6\u7684\u5de6\u8fb9\u7f18<br \/>\nandroid\uff1alayout_alignParentRight \u8d34\u7d27\u7236\u63a7\u4ef6\u7684\u53f3\u8fb9\u7f18<br \/>\nandroid\uff1alayout_alignParentTop \u8d34\u7d27\u7236\u63a7\u4ef6\u7684\u4e0a\u8fb9\u7f18<br \/>\nandroid\uff1alayout_marginBottom \u79bb\u67d0\u63a7\u4ef6\u5e95\u8fb9\u7f18\u7684\u8ddd\u79bb<br \/>\nandroid\uff1alayout_marginLeft \u79bb\u67d0\u63a7\u4ef6\u5de6\u8fb9\u7f18\u7684\u8ddd\u79bb<br \/>\nandroid\uff1alayout_marginRight \u79bb\u67d0\u63a7\u4ef6\u53f3\u8fb9\u7f18\u7684\u8ddd\u79bb<br \/>\nandroid\uff1alayout_marginTop \u79bb\u67d0\u63a7\u4ef6\u4e0a\u8fb9\u7f18\u7684\u8ddd\u79bb<br \/>\nandroid\uff1alayout_below \u5728\u67d0\u63a7\u4ef6\u4e0b\u65b9<br \/>\nandroid\uff1alayout_above \u5728\u67d0\u63a7\u4ef6\u4e0a\u65b9<br \/>\nandroid\uff1alayout_toLeftOf \u5728\u67d0\u63a7\u4ef6\u7684\u5de6\u8fb9<br \/>\nandroid\uff1alayout_toRightOf \u5728\u67d0\u63a7\u4ef6\u7684\u53f3\u8fb9<br \/>\nandroid\uff1alayout_alignTop \u672c\u63a7\u4ef6\u7684\u4e0a\u8fb9\u7f18\u548c\u67d0\u63a7\u4ef6\u7684\u4e0a\u8fb9\u7f18\u5bf9\u9f50<br \/>\nandroid\uff1alayout_alignLeft \u672c\u63a7\u4ef6\u7684\u5de6\u8fb9\u7f18\u548c\u67d0\u63a7\u4ef6\u7684\u5de6\u8fb9\u7f18\u5bf9\u9f50<br \/>\nandroid\uff1alayout_alignBottom \u672c\u63a7\u4ef6\u7684\u4e0b\u8fb9\u7f18\u548c\u67d0\u63a7\u4ef6\u7684\u4e0b\u63a7\u4ef6\u5bf9\u9f50<br \/>\nandroid\uff1alayout_alignRight \u672c\u63a7\u4ef6\u7684\u53f3\u8fb9\u7f18\u548c\u67d0\u63a7\u4ef6\u7684\u6709\u8fb9\u7f18\u5bf9\u9f50<br \/>\n\u6ce8\u610f\uff1a<br \/>\n\u5b98\u65b9\u63d0\u793a\u4e3a\u4e86\u83b7\u5f97\u66f4\u597d\u7684\u6027\u80fd\u548c\u5de5\u5177\u652f\u6301\uff08\u66f4\u591a\u7684\u529f\u80fd\uff09\uff0c\u6211\u4eec\u8981\u4f7f\u7528 ConstraintLayout \uff0c\u8fd9\u4e2a\u5e03\u5c40\u6211\u4eec\u540e\u9762\u518d\u6765\u8bb2<\/p>\n<p>\u7b2c\u4e09\u7ae0 Activity\u7684\u4f7f\u7528<\/p>\n<p>\u53c2\u8003\u6587\u6863\uff1a<a href=\"https:\/\/developer.android.google.cn\/guide\/components\/activities\/intro-activities?hl=zh_cn\">https:\/\/developer.android.google.cn\/guide\/components\/activities\/intro-activities?hl=zh_cn<\/a><br \/>\n1.\u4ec0\u4e48\u662factivity\uff1f<br \/>\n\u7ffb\u8bd1\u6210\u4e2d\u6587\uff1a\u6d3b\u52a8<br \/>\n\u89c6\u89c9\u4e0a\u8bb2\uff1a\u7528\u6765\u505a\u754c\u9762\u5c55\u793a\u7684\uff0c\u6bd4\u5982\u3002\u3002<br \/>\n\u4ee3\u7801\u4e0a\u8bb2\uff1a\u7ee7\u627f\u81eaActivity\u53ca\u5176\u5b50View<br \/>\n2.\u521b\u5efa\u81ea\u5df1\u7684activity<br \/>\n\u521b\u5efaActivity\u7684\u4e24\u79cd\u65b9\u5f0f\uff1a<br \/>\n1\u3001\u65b0\u5efa\u7c7b<br \/>\n2\u3001\u4f7f\u7528as\u63d0\u4f9b\u7684\u4ee3\u7801\u6a21\u677f<br \/>\n\u6ce8\u610f\u70b9\uff1a<br \/>\n\u6e05\u5355\u6587\u4ef6\uff0c\u6b64\u5143\u7d20\u552f\u4e00\u7684\u5fc5\u8981\u5c5e\u6027\u662f android:name\uff0c\u8be5\u5c5e\u6027\u7528\u4e8e\u6307\u5b9a Activity \u7684\u7c7b\u540d\u79f0\u3002<br \/>\n3.activity\u7684\u8df3\u8f6c<br \/>\n\u663e\u793a\u8df3\u8f6c\uff1a<br \/>\nIntent intent = new Intent(this,SecondActivity.class);<br \/>\nstartActivity(intent);<br \/>\n\u9690\u5f0f\u8df3\u8f6c\uff1a<br \/>\n3.1 \u901a\u8fc7action\u8fdb\u884c\u8df3\u8f6c<br \/>\n\/\/\u9700\u8981\u5728AndroidManifest.xml\u4e2d\u914d\u7f6eaction<br \/>\nIntent intent = new Intent(&quot;android.intent.action.mydialog&quot;);<br \/>\nstartActivity(i);<br \/>\n3.2 \u901a\u8fc7uri\u8fdb\u884c\u8df3\u8f6c<br \/>\n\/\/\u62e8\u6253\u7535\u8bdd\u7a0b\u5e8f<br \/>\nUri uri = Uri.parse(&quot;tel:10086&quot;);<br \/>\nIntent intent = new Intent(Intent.ACTION_DIAL,uri);<br \/>\nstartActivity(intent);<br \/>\n3.3 \u901a\u8fc7startActivityForResult()\u542f\u52a8Activity<\/p>\n<p>4.\u4f7f\u7528Intent\u4f20\u9012\u6570\u636e\u548c\u63a5\u6536\u6570\u636e<br \/>\nintent.putXXX(key,value);<\/p>\n<p>5.activity\u7684\u751f\u547d\u5468\u671f<\/p>\n<p>onCreate()<br \/>\n\u5fc5\u987b\u5b9e\u73b0\u8fd9\u4e2a\u56de\u8c03\u65b9\u6cd5\uff0c\u5b83\u4f1a\u5728\u7cfb\u7edf\u9996\u6b21\u521b\u5efaActivity\u7684\u65f6\u4faf\u89e6\u53d1\u3002<br \/>\nonStart()<br \/>\n\u5f53 Activity \u8fdb\u5165 Started \u72b6\u6001\u65f6\uff0c\u7cfb\u7edf\u4f1a\u8c03\u7528\u6b64\u56de\u8c03\u3002\u8c03\u7528onStart\u65f6\u5bf9\u7528\u6237\u53ef\u89c1\u7684\uff0c\u4f46\u662f\u7528\u6237\u4e0d\u53ef\u4ea4\u4e92\uff0c\u4e5f\u4e0d\u4f1a\u505c\u7559\u5728\u8fd9\u4e2a\u9875\u9762\u3002\u8be5\u65b9\u6cd5\u5b8c\u6210\u7684\u975e\u5e38\u5feb\uff0c\u5e76\u4e14\u4e0eonCreate()<br \/>\n\u4e00   \u6837\uff0c\u4e0d\u4f1a\u505c\u7559\u5728\u754c\u9762\u3002\u5b8c\u6210\u8fd9\u4e2a\u56de\u8c03\u4e4b\u540e\uff0c\u7cfb\u7edf\u7d27\u63a5\u7740\u4f1a\u8fdb\u53bbResumed\u72b6\u6001\u3002<br \/>\nonResume()<br \/>\n\u6b64\u65f6\uff0c\u8be5Activity()\u4f4d\u4e8eActivity()\u7684\u6808\u9876\u3002\u5e76\u4e14\u4f1a\u6355\u83b7\u6240\u6709\u7528\u6237\u8f93\u5165\uff0c\u6b64\u65f6\u7528\u6237\u53ef\u4ee5\u548c\u5e94\u7528\u7a0b\u5e8f\u505a\u4ea4\u4e92\u3002<br \/>\nonPause()<br \/>\n\u5f53\u7528\u6237\u70b9\u51fb\u8fd4\u56de\u6216\u8005\u5207\u6362\u5230\u522b\u7684\u9875\u9762\u65f6\uff0cActivity\u5931\u53bb\u7126\u70b9\u5e76\u8fdb\u5165'onPause()'\u72b6\u6001\u3002<br \/>\nonStop()<br \/>\n\u7cfb\u7edf\u8c03\u7528\u6b64\u65b9\u53d1\u4f5c\u4e3a\u7528\u6237\u79bb\u5f00\u4f60\u7684Activity\u7684\u7b2c\u4e00\u4e2a\u6307\u793a\uff08\u5c3d\u7ba1\u8fd9\u5e76\u4e0d\u603b\u610f\u5473\u7740\u6d3b\u52a8\u6b63\u5728\u88ab\u9500\u6bc1\uff09\uff1b\u8868\u660eactivity\u5df2\u7ecf\u4e0d\u5728\u524d\u53f0\u5c55\u793a\u3002\u505c\u6b62\u52a8\u753b\u548c\u5237\u65b0UI<br \/>\nonDestroy()<br \/>\nonDestroy()\u5728\u6d3b\u52a8\u88ab\u9500\u6bc1\u4e4b\u524d\u8c03\u7528\u3002\u7cfb\u7edf\u4f1a\u9664\u6389\u8fd9\u4e2a\u751f\u547d\u5468\u671f\u7684\u539f\u56e0\u662f\uff1a<br \/>\n1\u3001\u7531\u4e8e\u7528\u6237\u5173\u95edActivity\u754c\u9762\uff0c\u6216\u8005\u5f00\u53d1\u8005\u81ea\u5df1\u8c03\u7528finish()\u51fd\u6570\u5173\u95edActivity\u5bfc\u81f4\u7684\u3002\u603b\u4e4b\u662fActivity\u88ab\u5173\u95ed\u7684\u65f6\u5019\u8c03\u7528\u7684\u3002<br \/>\n2\u3001\u7531\u4e8e\u914d\u7f6e\u66f4\u6539\uff0c\u6bd4\u5982\u8bf4\u5c4f\u5e55\u53d1\u751f\u65cb\u8f6c\u3002<br \/>\n\u8fd9\u662fActivity\u6700\u540e\u4e00\u4e2a\u65b9\u6cd5\u3002\u53ef\u4ee5\u7528isFinishing()\u6765\u5224\u65ad\u5b83\uff0c\u5982\u679c\u6709dialog\u5728\u8fd0\u8f6c\uff0c\u8981\u5728\u8fd9\u4e2a\u754c\u9762\u5c06dialog\u7ed9cancel\u6389\uff0c\u4e0d\u7136\u629b\u5f02\u5e38\u3002<br \/>\n6.\u5207\u6362activity\u7684\u751f\u547d\u5468\u671f<br \/>\n1\u3001ActivityA \u5207\u6362\u5230ActivityB\u7684\u751f\u547d\u5468\u671f\u53d8\u5316\uff1a<br \/>\nonPause() -&gt;onStop()<br \/>\n2\u3001ActivityB\u8fd4\u56de\u5230ActivityA\u7684\u751f\u547d\u5468\u671f\u53d8\u5316\uff1a<br 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