tablehost
返回键的拦截
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK
&& event.getAction() == KeyEvent.ACTION_DOWN) {
if (firstTime + 2000 > System.currentTimeMillis()) {
super.onBackPressed();
} else {
ToastUtils.showShort(this, "再按一次退出程序");
}
firstTime = System.currentTimeMillis();
return false;
}
return super.dispatchKeyEvent(event);
}
package com.xinhua.schome.activity; import android.app.TabActivity; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.FragmentTransaction; import android.text.TextUtils; import android.view.KeyEvent; import android.view.View; import android.view.View.OnClickListener; import android.widget.FrameLayout; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.RadioGroup; import android.widget.TextView; import android.widget.RadioGroup.OnCheckedChangeListener; import android.widget.TabHost; import com.easemob.EMConnectionListener; import com.easemob.EMError; import com.easemob.EMEventListener; import com.easemob.EMNotifierEvent; import com.easemob.chat.EMChatManager; import com.xinhua.schome.R; import com.xinhua.schome.base.App; import com.xinhua.schome.base.AppManager; import com.xinhua.schome.common.MyConstants; import com.xinhua.schome.event.BaseEvent; import com.xinhua.schome.event.GetMsgEvent; import com.xinhua.schome.event.LoginChangeCityEvent; import com.xinhua.schome.event.MainEvent; import com.xinhua.schome.event.UpdateCityEvent; import com.xinhua.schome.utils.AppHelper; import com.xinhua.schome.utils.PrefUtils; import com.xinhua.schome.utils.ToastUtils; import com.xinhua.schome.webactivity.FindWebActivity; import com.xinhua.schome.webactivity.MainWebActivity; import com.xinhua.schome.webactivity.UserCenterWebActivity; import com.xinhua.schome.webactivity.MainWebActivity.MyConnectionListener; import de.greenrobot.event.EventBus; public class MainActivity extends TabActivity implements OnClickListener,EMEventListener { private static long firstTime; private TabHost tabHost; private ImageView mBelowHomeIv; private ImageView mBelowMessageIv; private ImageView mBelowFindIv; private ImageView mBelowPersonageIv; private TextView mBelowHomeTv; private TextView mBelowMessageTv; private TextView mBelowFindTv; private TextView mBelowPersonageTv; private FrameLayout mMainFrame; private LinearLayout mHomeLayout; private LinearLayout mMessageLayout; private LinearLayout mFindLayout; private LinearLayout mPersonageLayout; private String mobile; private TextView mMessageNumTv; private MyConnectionListener connectionListener; @Override protected void onNewIntent(Intent intent) { // TODO Auto-generated method stub System.out.println("onNewIntent"); super.onNewIntent(intent); } @Override public boolean dispatchKeyEvent(KeyEvent event) { if (event.getKeyCode() == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) { if (firstTime + 2000 > System.currentTimeMillis()) { super.onBackPressed(); } else { ToastUtils.showShort(this, "再按一次退出程序"); } firstTime = System.currentTimeMillis(); return false; } return super.dispatchKeyEvent(event); } @Override protected void onCreate(Bundle arg0) { // TODO Auto-generated method stub super.onCreate(arg0); setContentView(R.layout.activity_new_main); AppManager.getInstance().addActivity(this); tabHost = this.getTabHost(); tabHost.addTab(tabHost.newTabSpec("首页").setIndicator("首页") .setContent(new Intent(this, MainWebActivity.class))); tabHost.addTab(tabHost.newTabSpec("消息").setIndicator("消息") .setContent(new Intent(this, MessageActivity.class))); tabHost.addTab(tabHost.newTabSpec("发现").setIndicator("发现") .setContent(new Intent(this, FindWebActivity.class))); // tabHost.addTab(tabHost.newTabSpec("个人").setIndicator("个人").setContent(new // Intent(this, UserCenterWebActivity.class))); tabHost.addTab(tabHost.newTabSpec("个人").setIndicator("个人") .setContent(new Intent(this, MyProfileActivity.class))); initView(); changePage(0); EventBus.getDefault().register(this); connectionListener = new MyConnectionListener(); EMChatManager.getInstance().addConnectionListener(connectionListener); } /** * 连接监听listener * */ public class MyConnectionListener implements EMConnectionListener { @Override public void onConnected() { } @Override public void onDisconnected(final int error) { final String st1 = getResources().getString( R.string.can_not_connect_chat_server_connection); final String st2 = getResources().getString( R.string.the_current_network); runOnUiThread(new Runnable() { @Override public void run() { if (error == EMError.USER_REMOVED) { // 显示帐号已经被移除 // showAccountRemovedDialog(); } else if (error == EMError.CONNECTION_CONFLICT) { // 显示帐号在其他设备登陆dialog showConflictDialog(); } else { /* * chatHistoryFragment.errorItem.setVisibility(View.VISIBLE * ); if (NetUtils.hasNetwork(MainWebActivity.this)) * chatHistoryFragment.errorText.setText(st1); else * chatHistoryFragment.errorText.setText(st2); */ } } }); } } /** * 显示帐号在别处登录dialog */ private void showConflictDialog() { // TODO Auto-generated method stub ToastUtils.showShort(MainActivity.this, "此帐号已经在其他移动设备登录,请注意帐号安全"); AppManager.getInstance().finishAllActivityExcept(MainActivity.class); PrefUtils.putString(MainActivity.this, MyConstants.PREF_KEY_SID, ""); PrefUtils.putString(MainActivity.this, MyConstants.PREF_KEY_USER_JSON, ""); PrefUtils.putInt(this, MyConstants.KEY_NO_VIEW_COUNT, 0); Intent intent = new Intent(MainActivity.this, LoginActivity.class); if (App.getUser() != null) { mobile = App.getUser().getMobile(); intent.putExtra("Mobile", mobile); } startActivity(intent); App.setUser(null); EMChatManager.getInstance().logout(); } private void initView() { mBelowHomeIv = (ImageView) findViewById(R.id.below_home_iv); mBelowMessageIv = (ImageView) findViewById(R.id.below_message_iv); mBelowFindIv = (ImageView) findViewById(R.id.below_find_iv); mBelowPersonageIv = (ImageView) findViewById(R.id.below_personage_iv); mBelowHomeTv = (TextView) findViewById(R.id.below_home_tv); mBelowMessageTv = (TextView) findViewById(R.id.below_message_tv); mBelowFindTv = (TextView) findViewById(R.id.below_find_tv); mBelowPersonageTv = (TextView) findViewById(R.id.below_personage_tv); mMainFrame = (FrameLayout) findViewById(R.id.main_frame); mHomeLayout = (LinearLayout) findViewById(R.id.below_home_layout); mMessageLayout = (LinearLayout) findViewById(R.id.below_message_layout); mFindLayout = (LinearLayout) findViewById(R.id.below_find_layout); mPersonageLayout = (LinearLayout) findViewById(R.id.below_personage_layout); mMessageNumTv = (TextView) findViewById(R.id.message_num_tv); mHomeLayout.setOnClickListener(this); mMessageLayout.setOnClickListener(this); mFindLayout.setOnClickListener(this); mPersonageLayout.setOnClickListener(this); } public void onEventMainThread(MainEvent event) { switch (event.what) { case 3: PrefUtils.putString(this, "find_web_index", "2"); changePage(2); break; case 4: PrefUtils.putString(this, "find_web_index", "3"); changePage(2); break; default: break; } } public void onEvent(BaseEvent event) { if (event instanceof GetMsgEvent) { updateBadgeView(); } } @Override protected void onDestroy() { // TODO Auto-generated method stub EventBus.getDefault().unregister(this); AppManager.getInstance().finishActivity(this); super.onDestroy(); } /** * 连续按两次返回键就退出 */ @Override public void onBackPressed() { } @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.below_home_layout: changePage(0); break; case R.id.below_message_layout: changePage(1); break; case R.id.below_find_layout: changePage(2); break; case R.id.below_personage_layout: changePage(3); break; default: break; } } private void clearSelection() { // TODO Auto-generated method stub mBelowHomeIv.setSelected(false); mBelowMessageIv.setSelected(false); mBelowFindIv.setSelected(false); mBelowPersonageIv.setSelected(false); mBelowHomeTv.setSelected(false); mBelowMessageTv.setSelected(false); mBelowFindTv.setSelected(false); mBelowPersonageTv.setSelected(false); } private void updateBadgeView() { if (App.getUser() == null) { mMessageNumTv.setVisibility(View.GONE); }else{ int unReadMsgCount = EMChatManager.getInstance().getUnreadMsgsCount(); int noViewCount = PrefUtils.getInt(getApplicationContext(), MyConstants.KEY_NO_VIEW_COUNT, 0); final int mTotalMsg = unReadMsgCount + noViewCount; runOnUiThread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub if (mTotalMsg > 0) { if (mTotalMsg > 100) { mMessageNumTv.setText(""); mMessageNumTv.setVisibility(View.VISIBLE); }else{ mMessageNumTv.setText(mTotalMsg + ""); mMessageNumTv.setVisibility(View.VISIBLE); } } else { mMessageNumTv.setVisibility(View.GONE); } } }); } } private void changePage(int i) { clearSelection(); switch (i) { case 0: mBelowHomeIv.setSelected(true); mBelowHomeTv.setSelected(true); tabHost.setCurrentTabByTag("首页"); break; case 1: mBelowMessageIv.setSelected(true); mBelowMessageTv.setSelected(true); AppManager.getInstance().change_message_fragment = true; tabHost.setCurrentTabByTag("消息"); // PrefUtils.putBoolean(getApplicationContext(), MyConstants.KEY_CHANGE_MESSAGE_FRAGMENT, true); break; case 2: mBelowFindIv.setSelected(true); mBelowFindTv.setSelected(true); tabHost.setCurrentTabByTag("发现"); break; case 3: mBelowPersonageIv.setSelected(true); mBelowPersonageTv.setSelected(true); tabHost.setCurrentTabByTag("个人"); break; default: break; } } @Override protected void onResume() { // TODO Auto-generated method stub System.out.println("Main------onResume"); updateBadgeView(); EMChatManager.getInstance().registerEventListener( this, new EMNotifierEvent.Event[] { EMNotifierEvent.Event.EventNewMessage, EMNotifierEvent.Event.EventOfflineMessage, EMNotifierEvent.Event.EventConversationListChanged }); super.onResume(); } @Override protected void onStop() { // TODO Auto-generated method stub super.onStop(); EMChatManager.getInstance().unregisterEventListener(this); } @Override public void onEvent(EMNotifierEvent arg0) { // TODO Auto-generated method stub updateBadgeView(); } }
<?xml version="1.0" encoding="utf-8"?> <TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent" > <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/white" android:orientation="vertical" > <FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="0.0dip" android:layout_weight="1.0" /> <TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="0.0" android:visibility="gone" /> <include layout="@layout/include_divider" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:paddingBottom="3dp" android:paddingTop="3dp" > <LinearLayout android:id="@+id/below_home_layout" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:orientation="vertical" > <ImageView android:id="@+id/below_home_iv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/bg_below_home_selector" /> <TextView android:id="@+id/below_home_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="首页" android:textColor="@drawable/find_teach_tv_color_selector" /> </LinearLayout> <RelativeLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <LinearLayout android:id="@+id/below_message_layout" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <ImageView android:id="@+id/below_message_iv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:src="@drawable/bg_below_message_selector" /> <TextView android:id="@+id/message_num_tv" android:layout_width="15dp" android:layout_height="15dp" android:background="@drawable/shape_circle_red_bord" android:gravity="center" android:text="0" android:layout_toRightOf="@id/below_message_iv" android:textColor="@color/white" android:visibility="invisible" android:textSize="8sp" /> </RelativeLayout> <TextView android:id="@+id/below_message_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="消息" android:textColor="@drawable/find_teach_tv_color_selector" /> </LinearLayout> </RelativeLayout> <LinearLayout android:id="@+id/below_find_layout" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:orientation="vertical" > <ImageView android:id="@+id/below_find_iv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/bg_below_find_selector" /> <TextView android:id="@+id/below_find_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="发现" android:textColor="@drawable/find_teach_tv_color_selector" /> </LinearLayout> <LinearLayout android:id="@+id/below_personage_layout" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:orientation="vertical" > <ImageView android:id="@+id/below_personage_iv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/bg_below_personage_selector" /> <TextView android:id="@+id/below_personage_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="个人" android:textColor="@drawable/find_teach_tv_color_selector" /> </LinearLayout> </LinearLayout> </LinearLayout> </TabHost>
