此版本在“一个不错的UI框架”基础上修改了首次启动底部导航没有选中Tab的情况
运行效果图如下：
1、TabView.java 这里修改的是mState=-1
/******************************************************************************* * * Copyright (c) Weaver Info Tech Co. Ltd * * TabView * * app.ui.widget.TabView.java * TODO: File description or class description. * * @author: Administrator * @since: 2014-4-22 * @version: 1.0.0 * * @changeLogs: * 1.0.0: First created this class. * ******************************************************************************/ package app.ui.widget; import mobi.kuaidian.qunakao.R; import android.content.Context; import android.util.AttributeSet; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.LinearLayout; /** * @author Administrator * */ public class TabView extends LinearLayout implements OnClickListener { private OnTabChangeListener mOnTabChangedListener; private int mState = -1; private final Button mStateButton1; private final Button mStateButton2; private final Button mStateButton3; private final Button mStateButton4; public TabView(Context context) { this(context, null); } public TabView(Context context, AttributeSet attrs) { this(context, attrs, 0); } /** * @param context * @param attrs * @param defStyle */ public TabView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); inflate(context, R.layout.view_tab, this); mStateButton1 = (Button) findViewById(R.id.button_state1); mStateButton2 = (Button) findViewById(R.id.button_state2); mStateButton3 = (Button) findViewById(R.id.button_state3); mStateButton4 = (Button) findViewById(R.id.button_state4); mStateButton1.setOnClickListener(this); mStateButton2.setOnClickListener(this); mStateButton3.setOnClickListener(this); mStateButton4.setOnClickListener(this); } public void setOnTabChangeListener(OnTabChangeListener listener) { mOnTabChangedListener = listener; } public void setCurrentTab(int index) { switchState(index); } private void switchState(int state) { if (mState == state) { return; } // else continue mState = state; mStateButton1.setSelected(false); mStateButton2.setSelected(false); mStateButton3.setSelected(false); mStateButton4.setSelected(false); Object tag = null; switch (mState) { case 0: mStateButton1.setSelected(true); tag = mStateButton1.getTag(); break; case 1: mStateButton2.setSelected(true); tag = mStateButton2.getTag(); break; case 2: mStateButton3.setSelected(true); tag = mStateButton3.getTag(); break; case 3: mStateButton4.setSelected(true); tag = mStateButton4.getTag(); break; default: break; } if (mOnTabChangedListener != null) { if (tag != null && mOnTabChangedListener != null) { mOnTabChangedListener.onTabChange(tag.toString()); } else { mOnTabChangedListener.onTabChange(null); } } // else ignored } /* (non-Javadoc) * @see android.view.View.OnClickListener#onClick(android.view.View) */ @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.button_state1: switchState(0); break; case R.id.button_state2: switchState(1); break; case R.id.button_state3: switchState(2); break; case R.id.button_state4: switchState(3); break; default: break; } } public static interface OnTabChangeListener { public void onTabChange(String tag); } }
2、StartActivity.java 将mTabView.setCurrentTab(0); 移动到setupViews();之后
package app.ui.activity; import mobi.kuaidian.qunakao.R; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.util.Log; import android.view.KeyEvent; import android.widget.TextView; import app.ui.FragmentCallback; import app.ui.fragment.ProfileFragment; import app.ui.fragment.ServiceFragment; import app.ui.fragment.SessionFragment; import app.ui.fragment.SettingFragment; import app.ui.widget.TabView; import app.ui.widget.TabView.OnTabChangeListener; import app.util.DialogUtils; import app.util.FragmentUtils; public class StartActivity extends FragmentActivity implements OnTabChangeListener, FragmentCallback { private FragmentManager mFragmentManager; private Fragment mCurrentFragment; private TabView mTabView; private TextView mTitleTextView; /** 上一次的状态 */ private int mPreviousTabIndex = 1; /** 当前状态 */ private int mCurrentTabIndex = 1; /** 再按一次退出程序*/ private long exitTime = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mFragmentManager = getSupportFragmentManager(); mCurrentTabIndex = 1; mPreviousTabIndex = 1; setupViews(); mTabView.setCurrentTab(0); } private void setupViews() { setContentView(R.layout.activity_start); mTitleTextView = (TextView) findViewById(R.id.text_title); mTabView = (TabView) findViewById(R.id.view_tab); mTabView.setOnTabChangeListener(this); // mTabView.setCurrentTab(mCurrentTabIndex); mCurrentFragment = new ServiceFragment(); FragmentUtils.replaceFragment(mFragmentManager, R.id.layout_content,ServiceFragment.class, null, false); } /* (non-Javadoc) * @see android.support.v4.app.FragmentActivity#onActivityResult(int, int, android.content.Intent) */ @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); switch (requestCode) {/* case BaseActivity.REQUEST_OK_LOGIN: if (resultCode == RESULT_OK) { ApplicationUtils.showToast(this, R.string.text_loginsuccess); mTitleTextView.setText(R.string.text_tab_profile); final ProfileFragment profileFragment = (ProfileFragment) mFragmentManager.findFragmentByTag(ProfileFragment.class.getSimpleName()); if (profileFragment != null) { Log.d(TAG, "ProfileFragment is refreshing."); profileFragment.refreshViews(); } else { Log.e(TAG, "ProfileFragment is null."); } } else { // 返回原来的页面 mTabView.setCurrentTab(mPreviousTabIndex); ApplicationUtils.showToast(this, R.string.toast_login_failed); } break; default: break; */} } /* (non-Javadoc) * @see app.ui.FragmentCallback#onFragmentCallback(android.support.v4.app.Fragment, int, android.os.Bundle) */ @Override public void onFragmentCallback(Fragment fragment, int id, Bundle args) { mTabView.setCurrentTab(1); } /* (non-Javadoc) * @see app.ui.widget.TabView.OnTabChangeListener#onTabChange(java.lang.String) */ @Override public void onTabChange(String tag) { Log.e("tag", "onTabchange tag:" + tag); if (tag != null) { if (tag.equals("message")) { mPreviousTabIndex = mCurrentTabIndex; mCurrentTabIndex = 0; mTitleTextView.setText(R.string.text_tab_message); replaceFragment(SessionFragment.class); // 检查，如果没有登录则跳转到登录界面 /* final UserConfigManager manager = UserConfigManager.getInstance(); if (manager.getId() <= 0) { startActivityForResult(new Intent(this, LoginActivity.class), BaseActivity.REQUEST_OK_LOGIN); }*/ }else if ("service".equals(tag)) { mPreviousTabIndex = mCurrentTabIndex; mCurrentTabIndex = 1; mTitleTextView.setText(R.string.text_tab_service); replaceFragment(ServiceFragment.class); } else if (tag.equals("personal")) { mPreviousTabIndex = mCurrentTabIndex; mCurrentTabIndex = 2; mTitleTextView.setText(R.string.text_tab_profile); replaceFragment(ProfileFragment.class); // 检查，如果没有登录则跳转到登录界面 /* final UserConfigManager manager = UserConfigManager.getInstance(); if (manager.getId() <= 0) { startActivityForResult(new Intent(this, LoginActivity.class), BaseActivity.REQUEST_OK_LOGIN); }*/ } else if (tag.equals("settings")) { mPreviousTabIndex = mCurrentTabIndex; mCurrentTabIndex = 3; mTitleTextView.setText(R.string.text_tab_setting); replaceFragment(SettingFragment.class); // 检查，如果没有登录则跳转到登录界面 /* final UserConfigManager manager = UserConfigManager.getInstance(); if (manager.getId() <= 0) { startActivityForResult(new Intent(this, LoginActivity.class), BaseActivity.REQUEST_OK_LOGIN); }*/ } } } private void replaceFragment(Class<? extends Fragment> newFragment) { mCurrentFragment = FragmentUtils.switchFragment(mFragmentManager, R.id.layout_content, mCurrentFragment, newFragment, null, false); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) { if ((System.currentTimeMillis() - exitTime) > 2000) { DialogUtils.showToast(this, "再按一次退出程序"); exitTime = System.currentTimeMillis(); } else { finish(); System.exit(0); } return true; } return super.onKeyDown(keyCode, event); } }