上一篇博客介绍了，Android-普通菜单Menu，而这篇博客介绍Android-上下文菜单Menu
AndroidManifest.xml 中加入权限：
<!-- 读取联系人数据的权限 -->
<uses-permission android:name="android.permission.READ_CONTACTS"/> <!-- 读取通话记录的全身 -->
<uses-permission android:name="android.permission.READ_CALL_LOG" /> <!-- 修改通话记录的权限 -->
<uses-permission android:name="android.permission.WRITE_CALL_LOG" />
Activity
package liudeli.activity; import android.app.Activity;
import android.content.ClipboardManager;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.CallLog;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.CursorAdapter;
import android.widget.ListView;
import android.widget.TextView; public class ContentMenuActivity extends Activity { private static final int MENU_ITEM_COPY_TO_DIALER = Menu.FIRST;
private static final int MENU_ITEM_SEND_SMS = Menu.FIRST + 1;
private static final int MENU_ITEM_COPY_TO_CLIPBOARD = Menu.FIRST + 2;
private CursorAdapter adapter; @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_content_menu); // 初始化控件
ListView lv = findViewById(R.id.lv); // 获取通话记录的数据
ContentResolver cr = getContentResolver();
Uri uri = CallLog.Calls.CONTENT_URI;
String[] projection = new String[]{CallLog.Calls._ID,
CallLog.Calls.CACHED_NAME,
CallLog.Calls.NUMBER,
CallLog.Calls.TYPE}; Cursor cursor = cr.query(uri, projection, null, null, null);
adapter = new MyAdapter(this, cursor);
lv.setAdapter(adapter); /**
* 1 给listview注册上下文菜单
*/
registerForContextMenu(lv);
} /**
* 2 创建上下文菜单
* @param menu
* @param v
* @param menuInfo
*/
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenu.ContextMenuInfo menuInfo) {
menu.add(0, MENU_ITEM_COPY_TO_DIALER, 0, "复制号码到拨号盘");
menu.add(0, MENU_ITEM_SEND_SMS, 0, "发送短信");
menu.add(0, MENU_ITEM_COPY_TO_CLIPBOARD, 0, "复制号码到粘贴板");
super.onCreateContextMenu(menu, v, menuInfo);
} /**
* 3 处理上下文菜单的点击事件
* @param item
* @return
*/
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo acmi = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
int position = acmi.position;
Cursor cursor = (Cursor) adapter.getItem(position);
String number = cursor.getString(cursor.getColumnIndex(CallLog.Calls.NUMBER));
Intent intent;
int id = item.getItemId();
switch (id) {
case MENU_ITEM_COPY_TO_DIALER:
//激活拨号盘的组件，并且把号码传递过去
intent = new Intent();
intent.setAction(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:"+number));
startActivity(intent);
break;
case MENU_ITEM_SEND_SMS:
intent = new Intent();
intent.setAction(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("smsto:"+number));
startActivity(intent);
break;
case MENU_ITEM_COPY_TO_CLIPBOARD:
//剪贴板是一个系统服务
ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
//复制数据
clipboardManager.setText(number);
break; default:
break;
} return super.onContextItemSelected(item);
} private class MyAdapter extends CursorAdapter { private LayoutInflater mInflater; public MyAdapter(Context context, Cursor c) {
super(context, c);
mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
} @Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View view = mInflater.inflate(R.layout.lv_item, null);
return view;
} @Override
public void bindView(View view, Context context, Cursor cursor) {
// 得到控件
TextView tv_name = view.findViewById(R.id.tv_name);
TextView tv_number = view.findViewById(R.id.tv_number);
TextView tv_type = view.findViewById(R.id.tv_type); // 得到数据
String name = cursor.getString(1);
String number = cursor.getString(2);
int type = cursor.getInt(3); // 绑定数据
if(name == null){
tv_name.setText("未知");
}else{
tv_name.setText(name);
} tv_number.setText(number); switch (type) {
case CallLog.Calls.INCOMING_TYPE:
tv_type.setText("来电");
break;
case CallLog.Calls.OUTGOING_TYPE:
tv_type.setText("拨号"); break;
case CallLog.Calls.MISSED_TYPE:
tv_type.setText("未接");
break; default:
break;
} } }
}
Activity的布局文件：
<?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"> <ListView
android:id="@+id/lv"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/> </LinearLayout>
适配器要使用的 item 布局：
<?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="horizontal" > <TextView
android:id="@+id/tv_name"
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/tv_number"
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/tv_type"
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="wrap_content" /> </LinearLayout>
效果：