開發工具:ADT v22.6.2-1085508
target SDK:v4.1.2 JellyBean(API 16)
min SDK:v2.3.3 Gingerbread(API 10)
AndroidManifest.xml
- <?xml version="1.0" encoding="utf-8"?>
- <manifest
- xmlns:android="http://schemas.android.com/apk/res/android"
- package="com.example.contextmenutest"
- android:versionCode="1"
- android:versionName="1.0" >
- <uses-sdk
- android:minSdkVersion="10"
- android:targetSdkVersion="16" />
- <application
- android:allowBackup="true"
- android:icon="@drawable/ic_launcher"
- android:label="@string/app_name"
- android:theme="@style/AppTheme" >
- <activity
- android:name="com.example.contextmenutest.MainActivity"
- android:label="@string/app_name" >
- <intent-filter>
- <action android:name="android.intent.action.MAIN" />
- <category android:name="android.intent.category.LAUNCHER" />
- </intent-filter>
- </activity>
- </application>
- </manifest>
activity_main.xml
- <LinearLayout
- xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:tools="http://schemas.android.com/tools"
- android:id="@+id/container"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:orientation="vertical"
- tools:context="com.example.contextmenudemo.MainActivity" >
- <ListView
- android:id="@+id/listView1"
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- android:longClickable="true" >
- </ListView>
- </LinearLayout>
main_list_item.xml
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout
- xmlns:android="http://schemas.android.com/apk/res/android"
- android:id="@+id/ListItem"
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:orientation="vertical">
- <TextView
- android:id="@+id/TextView1"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="text1"
- android:textAppearance="?android:attr/textAppearanceSmall" />
- </LinearLayout>
MainActivity.java
- package com.example.contextmenudemo;
- import java.util.ArrayList;
- import android.support.v7.app.ActionBarActivity;
- import android.os.Bundle;
- import android.view.ContextMenu;
- import android.view.Menu;
- import android.view.MenuInflater;
- import android.view.MenuItem;
- import android.view.View;
- import android.view.ContextMenu.ContextMenuInfo;
- import android.widget.AdapterView;
- import android.widget.ListView;
- import android.widget.Toast;
- public class MainActivity extends ActionBarActivity
- {
- ListView listview;
- String[] values = new String[] { "item1", "item2", "item3", "item4", "item5" };
- int pos = -1;
- @Override
- protected void onCreate(Bundle savedInstanceState)
- {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- listview = (ListView) findViewById(R.id.listView1);
- final ArrayList<String> list = new ArrayList<String>();
- for(int i=0; i<values.length; ++i)
- {
- list.add(values[i]);
- }
- MainListAdapter mAdapter = new MainListAdapter (this, list);
- listview.setAdapter(mAdapter);
- // 註冊浮動功能表給 view, 在本例為 listview
- registerForContextMenu(listview);
- }
- @Override
- public boolean onCreateOptionsMenu(Menu menu)
- {
- getMenuInflater().inflate(R.menu.main, menu);
- return true;
- }
- // 點選功能表選項的回應碼
- @Override
- public boolean onOptionsItemSelected(MenuItem item)
- {
- int id = item.getItemId();
- switch(id)
- {
- case R.id.action_settings:
- Toast.makeText(this, "list "+pos+" menu 設定", Toast.LENGTH_LONG).show();
- pos = -1;
- return true;
- case R.id.action_new:
- Toast.makeText(this, "list "+pos+" menu 新增", Toast.LENGTH_LONG).show();
- pos = -1;
- return true;
- case R.id.action_edit:
- Toast.makeText(this, "list "+pos+" menu 修改", Toast.LENGTH_LONG).show();
- pos = -1;
- return true;
- }
- return super.onOptionsItemSelected(item);
- }
- // 建立浮動功能表
- @Override
- public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo)
- {
- // 功能表 和 浮動功能表是可以不同的
- // 選項不同, 各自點擊選項時的反應也可不同
- // 不過在本例, 偷懶採用同一個功能表
- super.onCreateContextMenu(menu, v, menuInfo);
- AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
- pos = info.position + 1;
- // 設定浮動功能表的標題欄
- menu.setHeaderTitle("選取 "+values[info.position]);
- MenuInflater inflater = getMenuInflater();
- inflater.inflate(R.menu.main, menu);
- }
- // 點選浮動功能表選項的回應碼
- @Override
- public boolean onContextItemSelected(MenuItem item)
- {
- // 因為在本例, 浮動功能表 和 功能表 是同一個
- // 所以直接將參數傳給功能表的 onOptionsItemSelected()
- // 讓功能表去處理
- return onOptionsItemSelected(item);
- }
- }
MainListAdapter.java
- package com.example.contextmenudemo;
- import java.util.List;
- import android.app.Activity;
- import android.content.Context;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.BaseAdapter;
- import android.widget.TextView;
- public class MainListAdapter extends BaseAdapter
- {
- private Activity activity;
- private List<String> mTextView;
- private static LayoutInflater inflater = null;
- public MainListAdapter(Activity a, List<String> str)
- {
- activity = a;
- mTextView = str;
- inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
- }
- public int getCount()
- {
- return mTextView.size();
- }
- public Object getItem(int position)
- {
- return position;
- }
- public long getItemId(int position)
- {
- return position;
- }
- public View getView(int position, View convertView, ViewGroup parent)
- {
- View vi = convertView;
- if(convertView==null)
- {
- vi = inflater.inflate(R.layout.main_list_item, null);
- }
- TextView TextView1 = (TextView) vi.findViewById(R.id.TextView1);
- TextView1.setText(mTextView.get(position).toString());
- return vi;
- }
- }
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