{"id":998,"date":"2017-03-27T10:44:44","date_gmt":"2017-03-27T02:44:44","guid":{"rendered":"http:\/\/www.yusian.com\/blog\/?p=998"},"modified":"2017-03-27T10:44:44","modified_gmt":"2017-03-27T02:44:44","slug":"android%e5%bc%80%e5%8f%91%e4%b9%8bspinner%e4%b8%8b%e6%8b%89%e9%80%89%e9%a1%b9%e7%9a%84%e5%9f%ba%e6%9c%ac%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/android\/2017\/03\/27\/104444998.html","title":{"rendered":"Android\u5f00\u53d1\u4e4bSpinner(\u4e0b\u62c9\u9009\u9879)\u7684\u57fa\u672c\u4f7f\u7528"},"content":{"rendered":"<p>1\u3001\u5148\u4e0a\u56fe<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.yusian.com\/blog\/wp-content\/uploads\/2017\/03\/device-2017-03-27-102955.png\" alt=\"\" width=\"360\" height=\"640\" class=\"alignnone size-full wp-image-999\" \/><\/p>\n<p>2\u3001\u521b\u5efaSpinner\u5206\u4e3a\u4e09\u6b65\uff1a<br \/>\n2.1\u3001\u9996\u5148\u5728Activity\u7684XML\u4e2d\u6dfb\u52a0<Spinner\/>\u6807\u7b7e\uff0c\u8bbe\u7f6e\u57fa\u672c\u5c5e\u6027\uff1b<br \/>\n2.2\u3001\u7ed9Spinner\u63d0\u4f9b\u76f8\u5bf9\u5e94\u7684\u6570\u636e\u6e90\uff0c\u53ca\u6837\u5f0f\uff1b<br \/>\n2.3\u3001\u521b\u5efaSpinner\u76f8\u5173\u7684ArrayAdapter\uff1b<br \/>\n3\u3001\u4e0b\u9762\u7528\u4e24\u79cd\u65b9\u5f0f\u6765\u521b\u5efa\u4e00\u4e2aSpinner\uff1b<br \/>\n3.1\u3001\u7b2c\u4e00\u79cd\u65b9\u5f0f\u4f7f\u7528ArrayAdapter\u7684\u9759\u6001\u65b9\u6cd5createFromResource()\uff1b<br \/>\n3.1.1\u3001\u8be5\u65b9\u6cd5\u9700\u8981\u4f20\u5165\u4e09\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2a\u4e3aContext\u5bf9\u8c61\uff0c\u5373\u5f53\u524dActivity\uff1b<br \/>\n3.1.2\u3001\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3atextArrayResId\uff0c\u5728String.xml\u4e2d\u521b\u5efa\u4e00\u4e2a<String-array\/>\u63d0\u4f9b\u6570\u636e\u6e90\uff1b<br \/>\n3.1.3\u3001\u7b2c\u4e09\u4e2a\u53c2\u6570\u4e3aItem\u6837\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u7cfb\u7edf\u81ea\u5e26\u6837\u5f0fR.layout.support_simple_spinner_dropdown_item\uff1b<br \/>\n3.2\u3001\u7b2c\u4e8c\u79cd\u65b9\u5f0f\u4f7f\u7528ArrayAdapter\u7684\u6784\u9020\u65b9\u6cd5\u52a8\u6001\u6784\u5efa\uff1b<br \/>\n3.2.1\u3001\u8be5\u65b9\u6cd5\u9700\u8981\u4f20\u5165\u56db\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2aContext\u5bf9\u8c61\uff0c\u5373\u4e3a\u5f53\u524dActivity\uff1b<br \/>\n3.2.2\u3001\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3aresource\uff0c\u5373Item\u7684\u6837\u5f0f\uff1b<br \/>\n3.2.3\u3001\u7b2c\u4e09\u4e2a\u53c2\u6570\u4e3aresource\u5f53\u4e2dTextView\u7684id\uff1b<br \/>\n3.2.4\u3001\u7b2c\u56db\u4e2a\u53c2\u6570\u4e3a\u6570\u636e\u6e90\uff0c\u63d0\u4f9b\u4e00\u4e2alist\uff0clist\u4e2d\u53ef\u4ee5\u4e3a\u4efb\u4f55\u5bf9\u8c61\uff0c\u7ed3\u679c\u53d6\u5bf9\u8c61\u7684toString\u65b9\u6cd5\uff1b<br \/>\n4\u3001\u8bbe\u7f6e\u76d1\u542c\uff0csetOnItemSelectedListener()\u65b9\u6cd5\uff1b<!--more--><\/p>\n<p>string.xml<\/p>\n<pre line=\"1\" lang=\"java\">\n<resources>\n    <string name=\"app_name\">Spinner<\/string>\n    <string-array name=\"spinner\">\n        <item>AAAA<\/item>\n        <item>BBBB<\/item>\n        <item>CCCC<\/item>\n        <item>DDDD<\/item>\n        <item>EEEE<\/item>\n        <item>FFFF<\/item>\n        <item>GGGG<\/item>\n    <\/string-array>\n<\/resources><\/pre>\n<p>item.xml<\/p>\n<pre line=\"1\" lang=\"java\"><?xml version=\"1.0\" encoding=\"utf-8\"?>\n<LinearLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\n    android:orientation=\"vertical\"\n    android:layout_width=\"match_parent\"\n    android:layout_height=\"match_parent\">\n\n    <TextView\n        android:id=\"@+id\/textview\"\n        android:layout_width=\"wrap_content\"\n        android:layout_height=\"44dp\"\n        android:text=\"Content\"\n        android:gravity=\"center_vertical\"\n        android:padding=\"5dp\" \/>\n    <View\n        android:layout_width=\"match_parent\"\n        android:layout_height=\"0.5dp\"\n        android:background=\"#ACACAC\"\n        \/>\n<\/LinearLayout><\/pre>\n<p>Activity<\/p>\n<pre line=\"1\" lang=\"java\">package com.yusian.spinner;\n\nimport android.support.v7.app.AppCompatActivity;\nimport android.os.Bundle;\nimport android.util.Log;\nimport android.view.View;\nimport android.widget.AdapterView;\nimport android.widget.ArrayAdapter;\nimport android.widget.Spinner;\nimport android.widget.SpinnerAdapter;\n\nimport java.util.ArrayList;\nimport java.util.List;\n\npublic class MainActivity extends AppCompatActivity {\n    private Spinner spinner;\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.activity_main);\n        spinner = (Spinner) findViewById(R.id.spinner);\n\n        \/\/ \u65b9\u5f0f\u4e00\uff1a\u4f7f\u7528ArrayAdapter\u7684\u9759\u6001\u65b9\u6cd5\u52a0\u8f7d\u672c\u5730\u8d44\u6e90\u521b\u5efa\n        ArrayAdapter adapter = ArrayAdapter.createFromResource(this,\n                R.array.spinner,    \/\/ \u6570\u636e\n                R.layout.support_simple_spinner_dropdown_item   \/\/ \u6837\u5f0f\n        );\n\n        \/\/ \u65b9\u5f0f\u4e8c\uff1a\u4f7f\u7528ArrayAdapter\u7684\u6784\u9020\u65b9\u6cd5\u52a8\u6001\u521b\u5efa\n\/\/        List<String> list = new ArrayList<>();\n\/\/        list.add(\"11111\");\n\/\/        list.add(\"22222\");\n\/\/        list.add(\"33333\");\n\/\/        adapter = new ArrayAdapter(this,\n\/\/                R.layout.item,      \/\/ \u81ea\u5b9a\u4e49\u6837\u5f0f\n\/\/                R.id.textview,      \/\/ \u6307\u5b9a\u663e\u793a\u5185\u5bb9\u7684TextView\n\/\/                list                \/\/ \u6570\u636e\u6e90\n\/\/        );\n\n        spinner.setAdapter(adapter);\n        \/\/ \u8bbe\u7f6e\u76d1\u542c\n        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {\n            @Override\n            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {\n                Log.d(\"SALog\", \"onItemSelected: \" + position);\n            }\n            @Override\n            public void onNothingSelected(AdapterView<?> parent) {\n                Log.d(\"SALog\", \"onNothingSelected: \");\n            }\n        });\n    }\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u5148\u4e0a\u56fe 2\u3001\u521b\u5efaSpinner\u5206\u4e3a\u4e09\u6b65\uff1a 2.1\u3001\u9996\u5148\u5728Activity\u7684XML\u4e2d\u6dfb\u52a0\u6807\u7b7e\uff0c\u8bbe\u7f6e\u57fa\u672c\u5c5e\u6027\uff1b 2.2\u3001\u7ed9Spinner\u63d0\u4f9b\u76f8\u5bf9\u5e94\u7684\u6570\u636e\u6e90\uff0c\u53ca\u6837\u5f0f\uff1b 2.3\u3001\u521b\u5efaSpinner\u76f8\u5173\u7684ArrayAdapter\uff1b 3\u3001\u4e0b\u9762\u7528\u4e24\u79cd\u65b9\u5f0f\u6765\u521b\u5efa\u4e00\u4e2aSpinner\uff1b 3.1\u3001\u7b2c\u4e00\u79cd\u65b9\u5f0f\u4f7f\u7528ArrayAdapter\u7684\u9759\u6001\u65b9\u6cd5createFromResource()\uff1b 3.1.1\u3001\u8be5\u65b9\u6cd5\u9700\u8981\u4f20\u5165\u4e09\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2a\u4e3aContext\u5bf9\u8c61\uff0c\u5373\u5f53\u524dActivity\uff1b 3.1.2\u3001\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3atextArrayResId\uff0c\u5728String.xml\u4e2d\u521b\u5efa\u4e00\u4e2a\u63d0\u4f9b\u6570\u636e\u6e90\uff1b 3.1.3\u3001\u7b2c\u4e09\u4e2a\u53c2\u6570\u4e3aItem\u6837\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u7cfb\u7edf\u81ea\u5e26\u6837\u5f0fR.layout.support_simple_spinner_dropdown_item\uff1b 3.2\u3001\u7b2c\u4e8c\u79cd\u65b9\u5f0f\u4f7f\u7528ArrayAdapter\u7684\u6784\u9020\u65b9\u6cd5\u52a8\u6001\u6784\u5efa\uff1b 3.2.1\u3001\u8be5\u65b9\u6cd5\u9700\u8981\u4f20\u5165\u56db\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2aContext\u5bf9\u8c61\uff0c\u5373\u4e3a\u5f53\u524dActivity\uff1b 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4\u3001\u8bbe\u7f6e\u76d1\u542c\uff0csetOnItemSelectedListener()\u65b9\u6cd5\uff1b<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[33,15],"class_list":["post-998","post","type-post","status-publish","format-standard","hentry","category-android","tag-33","tag-module"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/998","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=998"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/998\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=998"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=998"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}