本篇文章为大家展示了Android中怎么自定义选择控件，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
一、自定义Dialog
Dialog布局文件
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <LinearLayout android:layout_width="wrap_content" android:layout_weight="1" android:background="@drawable/dialog_bg" android:layout_height="match_parent" android:orientation="vertical" > <RelativeLayout android:layout_width="match_parent" android:layout_height="50dp"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:layout_centerVertical="true" android:textSize="18sp" android:textColor="#000000" android:id="@+id/tv_dialog_select_title"/> <ImageButton android:layout_width="50dp" android:layout_height="match_parent" android:padding="8dp" android:layout_marginRight="10dp" android:layout_centerVertical="true" android:layout_alignParentRight="true" android:scaleType="centerInside" android:background="@color/transparent" android:src="@drawable/im_search_back" android:id="@+id/btn_dialog_select_search"/> </RelativeLayout> <com.whieenz.searchselect.DialogSearchView android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/searchView" android:visibility="gone"/> <ListView android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:orientation="vertical" android:id="@+id/listview" android:layout_gravity="center_horizontal" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="80dp" android:gravity="center" android:background="@color/transparent"> <ImageButton android:layout_width="40dp" android:layout_height="40dp" android:id="@+id/imb_dialog_select_close" android:scaleType="centerInside" android:src="@drawable/dialog_close" android:background="@color/transparent"/> </LinearLayout></LinearLayout>Dialog Java文件
package com.whieenz.searchselect;import android.app.Activity;import android.app.Dialog;import android.content.Context;import android.content.DialogInterface;import android.util.DisplayMetrics;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.view.WindowManager;import android.widget.AdapterView;import android.widget.ImageButton;import android.widget.ListView;import android.widget.TextView;import java.util.ArrayList;import java.util.List;public class SerachSelectDialog extends Dialog { public SerachSelectDialog(Context context, int themeResId) { super(context, themeResId); } public void setDialogWindowAttr(double x, double y, Activity activity){ if (x<0||x>1||y<0||y>1){ return; } Window window = this.getWindow(); WindowManager.LayoutParams lp = window.getAttributes(); WindowManager manager = activity.getWindowManager(); DisplayMetrics outMetrics = new DisplayMetrics(); manager.getDefaultDisplay().getMetrics(outMetrics); int width = outMetrics.widthPixels; int height = outMetrics.heightPixels; lp.gravity = Gravity.CENTER; lp.width = (int) (width * x); lp.height = (int) (height * y); this.getWindow().setAttributes(lp); } public static class Builder { private String title; private View contentView; private String positiveButtonText; private String negativeButtonText; private String singleButtonText; private List<String> listData; private View.OnClickListener positiveButtonClickListener; private View.OnClickListener negativeButtonClickListener; private View.OnClickListener singleButtonClickListener; private View layout; private Context context; private SerachSelectDialog dialog; private OnSelectedListiner selectedListiner; ListView listView; //SearchView searchView ; DialogSearchView searchView; ImageButton searchBtn; ImageButton closeBtn; TextView titleView; private boolean state = false; public Builder(Context context) { //这里传入自定义的style，直接影响此Dialog的显示效果。style具体实现见style.xml this.context = context; dialog = new SerachSelectDialog(context,R.style.selectDialog); LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); layout = inflater.inflate(R.layout.dialog_select_search, null); listView = (ListView)layout.findViewById(R.id.listview); //searchView = (SearchView) layout.findViewById(R.id.searchView); searchView = (DialogSearchView) layout.findViewById(R.id.searchView); searchBtn = (ImageButton) layout.findViewById(R.id.btn_dialog_select_search); closeBtn = (ImageButton) layout.findViewById(R.id.imb_dialog_select_close); titleView = (TextView) layout.findViewById(R.id.tv_dialog_select_title); dialog.addContentView(layout, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)); } public Builder setTitle(String title) { this.title = title; return this; } public Builder setContentView(View v) { this.contentView = v; return this; } public void setListData(List<String> listData) { this.listData = listData; } public Builder setPositiveButton(String positiveButtonText, View.OnClickListener listener) { this.positiveButtonText = positiveButtonText; this.positiveButtonClickListener = listener; return this; } public Builder setNegativeButton(String negativeButtonText, View.OnClickListener listener) { this.negativeButtonText = negativeButtonText; this.negativeButtonClickListener = listener; return this; } private SerachSelectDialog create() { titleView.setText(title); final SearchSelectAdapter sa = new SearchSelectAdapter(context,listData); listView.setAdapter(sa); listView.invalidate(); searchBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if (!state){ searchView.setVisibility(View.VISIBLE); state = true; }else { searchView.setVisibility(View.GONE); state = false; } } }); searchView.setDialogSearchViewListener(new DialogSearchView.DialogSearchViewListener() { @Override public boolean onQueryTextChange(String text) { updateLayout(searchItem(text)); return false; } }); closeBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { dialog.dismiss(); } }); dialog.setOnDismissListener(new DialogInterface.OnDismissListener() { @Override public void onDismiss(DialogInterface dialog) { } }); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { selectedListiner.onSelected(sa.getItem(position)); dialog.dismiss(); } }); dialog.setContentView(layout); //用户可以点击手机Back键取消对话框显示 dialog.setCancelable(true); //用户不能通过点击对话框之外的地方取消对话框显示 dialog.setCanceledOnTouchOutside(false); return dialog; } public List<String> searchItem(String name) { ArrayList<String> mSearchList = new ArrayList<String>(); for (int i = 0; i < listData.size(); i++) { int index = listData.get(i).indexOf(name); // 存在匹配的数据 if (index != -1) { mSearchList.add(listData.get(i)); } } return mSearchList; } public void updateLayout(List<String> newList) { final SearchSelectAdapter sa = new SearchSelectAdapter(context,newList); listView.setAdapter(sa); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { selectedListiner.onSelected(sa.getItem(position)); dialog.dismiss(); } }); } public void setSelectedListiner(SerachSelectDialog.Builder.OnSelectedListiner selectedListiner) { this.selectedListiner = selectedListiner; } public static abstract class OnSelectedListiner{ public abstract void onSelected(String String); } public SerachSelectDialog show() { create(); dialog.show(); return dialog; } }}二、自定义SearchView
SearchView 布局文件
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:gravity="center" android:background="#ffffff" android:layout_height="50dp"> <LinearLayout android:layout_width="match_parent" android:layout_height="35dp" android:orientation="horizontal" android:gravity="center_vertical" android:layout_marginLeft="15dp" android:layout_marginRight="15dp" android:background="@drawable/search_layout_bg"> <ImageButton android:layout_width="20dp" android:layout_height="20dp" android:id="@+id/imb_search_search" android:layout_marginLeft="15dp" android:scaleType="centerInside" android:src="@drawable/im_search_gray" android:background="#F0F0F0" /> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_marginRight="15dp" android:id="@+id/et_search_text" android:layout_weight="1" android:lines="1" android:textSize="14sp" android:background="@null" android:hint="请输入搜索内容"/> <ImageButton android:layout_width="35dp" android:layout_height="35dp" android:padding="12.5dp" android:id="@+id/imb_search_clear" android:layout_marginRight="20dp" android:src="@drawable/im_x" android:visibility="gone" android:scaleType="centerInside" android:background="#F0F0F0" /> </LinearLayout></LinearLayout>SearchView Java代码
package com.whieenz.searchselect;import android.content.Context;import android.text.Editable;import android.text.TextWatcher;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.widget.EditText;import android.widget.ImageView;import android.widget.LinearLayout;public class DialogSearchView extends LinearLayout implements View.OnClickListener { private EditText etInput; private ImageView ivDelete; private Context mContext; private DialogSearchViewListener mListener; public void setDialogSearchViewListener(DialogSearchViewListener listener) { mListener = listener; } public DialogSearchView(Context context, AttributeSet attrs) { super(context, attrs); mContext = context; LayoutInflater.from(context).inflate(R.layout.view_search_layout, this); initViews(); } private void initViews() { etInput = (EditText) findViewById(R.id.et_search_text); ivDelete = (ImageView) findViewById(R.id.imb_search_clear); ivDelete.setOnClickListener(this); etInput.addTextChangedListener(new EditChangedListener()); etInput.setOnClickListener(this); } private class EditChangedListener implements TextWatcher { @Override public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) { } @Override public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) { if (!"".equals(charSequence.toString())) { ivDelete.setVisibility(VISIBLE); //更新autoComplete数据 if (mListener != null) { mListener.onQueryTextChange(charSequence + ""); } } else { ivDelete.setVisibility(GONE); } } @Override public void afterTextChanged(Editable editable) { } } @Override public void onClick(View view) { switch (view.getId()) { case R.id.imb_search_clear: etInput.setText(""); if (mListener != null) { mListener.onQueryTextChange(""); } ivDelete.setVisibility(GONE); break; } } public interface DialogSearchViewListener { boolean onQueryTextChange(String text); }}自定义ListView Adapter
listItem 布局文件
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="50dp" android:paddingLeft="10dp" android:paddingTop="15dp" android:paddingBottom="15dp" android:orientation="horizontal"> <TextView android:id="@+id/tv_select_info" android:layout_width="match_parent" android:layout_height="match_parent" android:textSize="20sp" android:layout_centerInParent="true" android:gravity="center" android:lines="1"/></RelativeLayout>Adapter 文件
package com.whieenz.searchselect;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;import java.util.List;public class SearchSelectAdapter extends BaseAdapter { private List<String> Datas; private Context context; private LayoutInflater inflater; public SearchSelectAdapter(Context ctx, List<String> datas){ this.context = ctx; this.Datas = datas; this.inflater = LayoutInflater.from(ctx); } @Override public int getCount() { return Datas.size(); } @Override public String getItem(int i) { return Datas.get(i); } @Override public long getItemId(int i) { return i; } @Override public View getView(int i, View view, ViewGroup viewGroup) { ViewHolder holder = null; if (view == null ) { view = inflater.inflate(R.layout.list_cell_select_single, null); holder = new ViewHolder(view); view.setTag(holder); } else { holder = (ViewHolder) view.getTag(); } holder.info.setText(Datas.get(i)); return view; } static class ViewHolder { TextView info; public ViewHolder(View view) { info = view.findViewById(R.id.tv_select_info); } }}MainActivity 实现
布局文件
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:padding="10dp" tools:context="com.whieenz.searchselect.MainActivity"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="150dp" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="20sp" android:gravity="left" android:text="选择结果：" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="20sp" android:textColor="#ff5c5c" android:id="@+id/tv_result" /> </LinearLayout> <Button android:layout_width="match_parent" android:layout_height="40dp" android:layout_marginTop="20dp" android:gravity="center" android:textSize="20sp" android:textColor="#ffffff" android:background="@drawable/btn_bg" android:text="打开选择器" android:onClick="doSelect"/></LinearLayout>Java文件
package com.whieenz.searchselect;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.TextView;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity { private List<String> mDatas; private TextView textView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView) findViewById(R.id.tv_result); initData(); } public void doSelect(View view){ SerachSelectDialog.Builder alert = new SerachSelectDialog.Builder(this); alert.setListData(mDatas); alert.setTitle("请选择城市"); alert.setSelectedListiner(new SerachSelectDialog.Builder.OnSelectedListiner() { @Override public void onSelected(String info) { textView.setText(info); } }); SerachSelectDialog mDialog = alert.show(); //设置Dialog 尺寸 mDialog.setDialogWindowAttr(0.9,0.9,this); } private void initData(){ mDatas = new ArrayList<>(); String [] citys = {"武汉","北京","上海","深圳","兰州","成都","天津"}; for (int i = 0; i < 10; i++) { for (int j = 0; j < citys.length; j++) { mDatas.add(citys[j]+i); } } }}其他配置
Dialog style（样式）
<style name="selectDialog" parent="@android:style/Theme.Dialog"> <item name="android:windowNoTitle">true</item>//无 <item name="android:windowBackground">@color/transparent</item> </style>上述内容就是Android中怎么自定义选择控件，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注编程网行业资讯频道。
