Android实现类似iOS分栏控制器
近公司接了一个项目，需要会安卓，人手不够的情况作为一个开发iOS的也需要跟进，开始学习android，集成开发环境以后。直接就被难到了，iOS里面的分栏控制器（tabbarcontroller）android里面根本没有这个控件，安卓都是自己来实现这个效果的。所以开始研究android是如何实现的，下面这些代码。
当我们创建一个android APP项目的时候会自动生成一个MainActivity，我们可以在这Activity实现这个效果。首先我们先看一下效果图
代码实现
<frameLayout android:id="@+id/main_fl" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1"/>
这样页面我们就实现了。
接下来就是点击切换页面的效果实现了，代码主要就是实现点击切换页面的功能。所以我们要关联一下五个Fragment了
package com.zkteco.pridebiosecurity.view;
import android.annotation.SuppressLint;
import android.os.Build;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.zkteco.pridebiosecurity.R;
import com.zkteco.pridebiosecurity.base.BaseActivity;
import com.zkteco.pridebiosecurity.base.BaseFragment;
import com.zkteco.pridebiosecurity.util.StatusBarUtil;
import com.zkteco.pridebiosecurity.view.clock.ClockFragment;
import com.zkteco.pridebiosecurity.view.entrance.EntranceFragment;
import com.zkteco.pridebiosecurity.view.home.HomeFragment;
import com.zkteco.pridebiosecurity.view.me.MeFragment;
import com.zkteco.pridebiosecurity.view.message.MessageFragment;
import com.zkteco.pridebiosecurity.widget.TitleBar;
/**
* 程序主界面
*
* Created by sunyd on 2019/2/22.
*/
public class MainActivity extends BaseActivity implements OnClickListener {
private LinearLayout mMessageLl, mColckLl, mHomeLl, mEntranceLl, mMeLl;
private ImageView mMessageIv, mColckIv, mHomeIv, mEntranceIv, mMeIv;
private TextView mMessageTv, mColckTv, mHomeTv, mEntranceTv, mMeTv;
private BaseFragment baseFragment;
@Override
protected int bindLayout() {
return R.layout.activity_main;
}
@Override
protected void initView() {
// 设置状态栏背景蓝色，文字白色
StatusBarUtil.setStatusBarLightMode(this, false);
mMessageLl = bindView(R.id.message_ll);
mColckLl = bindView(R.id.clock_ll);
mHomeLl = bindView(R.id.home_ll);
mEntranceLl = bindView(R.id.entrance_ll);
mMeLl = bindView(R.id.me_ll);
mMessageIv = bindView(R.id.message_iv);
mColckIv = bindView(R.id.clock_iv);
mHomeIv = bindView(R.id.home_iv);
mEntranceIv = bindView(R.id.entrance_iv);
mMeIv = bindView(R.id.me_iv);
mMessageTv = bindView(R.id.message_tv);
mColckTv = bindView(R.id.clock_tv);
mHomeTv = bindView(R.id.home_tv);
mEntranceTv = bindView(R.id.entrance_tv);
mMeTv = bindView(R.id.me_tv);
changeFragment(MessageFragment.class, 0);
}
@Override
protected void initData() {
}
@Override
protected void setListeners() {
mMessageLl.setOnClickListener(this);
mColckLl.setOnClickListener(this);
mHomeLl.setOnClickListener(this);
mEntranceLl.setOnClickListener(this);
mMeLl.setOnClickListener(this);
}
@Override
protected void autoRefresh() {
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.message_ll:
changeFragment(MessageFragment.class, 0);
break;
case R.id.clock_ll:
changeFragment(ClockFragment.class, 1);
break;
case R.id.home_ll:
changeFragment(HomeFragment.class, 2);
break;
case R.id.entrance_ll:
changeFragment(EntranceFragment.class, 3);
break;
case R.id.me_ll:
changeFragment(MeFragment.class, 4);
break;
}
}
/**
* 切换主界面
* @param clazz
* @param position
*/
public void changeFragment(Class clazz, int position) {
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
Fragment fragment = fm.findFragmentByTag(clazz.getName());
if (fragment == null) {
try {
fragment = clazz.newInstance();
} catch (Exception e) {
e.printStackTrace();
}
}
if (baseFragment != null && baseFragment != fragment) {
ft.hide(baseFragment);
}
if (!fragment.isAdded()) {
ft.add(R.id.main_fl, fragment, clazz.getName());
} else {
ft.show(fragment);
}
ft.commitAllowingStateLoss();
baseFragment = (BaseFragment) fragment;
mMessageIv.setImageResource(R.mipmap.ic_message_0);
mColckIv.setImageResource(R.mipmap.ic_clock_0);
mHomeIv.setImageResource(R.mipmap.ic_home_0);
mEntranceIv.setImageResource(R.mipmap.ic_entrance_0);
mMeIv.setImageResource(R.mipmap.ic_me_0);
mMessageTv.setTextColor(getResources().getColor(R.color.gray));
mColckTv.setTextColor(getResources().getColor(R.color.gray));
mHomeTv.setTextColor(getResources().getColor(R.color.gray));
mEntranceTv.setTextColor(getResources().getColor(R.color.gray));
mMeTv.setTextColor(getResources().getColor(R.color.gray));
if (position == 0) {
mMessageIv.setImageResource(R.mipmap.ic_message_1);
mMessageTv.setTextColor(getResources().getColor(R.color.app_style_color));
} else if (position == 1) {
mColckIv.setImageResource(R.mipmap.ic_clock_1);
mColckTv.setTextColor(getResources().getColor(R.color.app_style_color));
} else if (position == 2) {
mHomeIv.setImageResource(R.mipmap.ic_home_1);
mHomeTv.setTextColor(getResources().getColor(R.color.app_style_color));
} else if (position == 3) {
mEntranceIv.setImageResource(R.mipmap.ic_entrance_1);
mEntranceTv.setTextColor(getResources().getColor(R.color.app_style_color));
} else if (position == 4) {
mMeIv.setImageResource(R.mipmap.ic_me_1);
mMeTv.setTextColor(getResources().getColor(R.color.app_style_color));
}
}
}这里呢，每一个Fragment都继承了BaseFragment，下面是BaseFragment的代码实现
/**
* TODO
* By sunyd, 2016-7-19
*/
package com.zkteco.pridebiosecurity.base;
import android.content.Context;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.zkteco.pridebiosecurity.widget.LoadingDialog;
/**
* fragment基类
*
* @author sunyd, 2016-7-19
*/
public abstract class BaseFragment extends android.support.v4.app.Fragment {
protected Context mContext;
private LoadingDialog mABLoadingDialog;
protected View mRootView;
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
@Nullable
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(bindLayout(), container, false);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mABLoadingDialog = new LoadingDialog(getActivity());
mContext = getActivity();
mRootView = view;
initView();
}
protected T bindView(int id) {
@SuppressWarnings("unchecked") T t = (T) mRootView.findViewById(id);
return t;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
initData();
setListeners();
}
@Override
public void onResume() {
super.onResume();
autoRefresh();
}
/**
* 绑定布局
* @return
*/
protected abstract int bindLayout();
/**
* 初始化组件
*/
protected abstract void initView();
/**
* 数据
*/
protected abstract void initData();
/**
* 设置监听
*/
protected abstract void setListeners();
/**
* 自动刷新
*/
protected abstract void autoRefresh();
/**
* 加载动画
* @param show
*/
public void showOrHideWaitBar(boolean show) {
if (mABLoadingDialog != null) {
if (show) {
mABLoadingDialog.show();
} else {
mABLoadingDialog.dismiss();
}
}
}
@Override
public void onDestroy() {
if (mABLoadingDialog != null && mABLoadingDialog.isDialogShowing()) {
mABLoadingDialog.dismiss();
}
super.onDestroy();
}
} MainActivity继承BaseActivity，下面便是BaseActivity实现代码
package com.zkteco.pridebiosecurity.base;
import android.annotation.SuppressLint;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import com.zkteco.pridebiosecurity.R;
import com.zkteco.pridebiosecurity.util.StatusBarUtil;
import com.zkteco.pridebiosecurity.widget.LoadingDialog;
/**
* activity基类
*
* @author sunyd, 2019-2-25
*/
@SuppressLint("NewApi")
public abstract class BaseActivity extends AppCompatActivity {
private LoadingDialog mABLoadingDialog;
protected Context mContext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
BaseApplication.getInstance().addActivity(this);
// 设置状态栏背景白色，文字黑色
StatusBarUtil.setStatusBarLightMode(this, true);
setContentView(bindLayout());
mABLoadingDialog = new LoadingDialog(this);
mContext = this;
initView();
initData();
setListeners();
}
@Override
protected void onResume() {
super.onResume();
autoRefresh();
}
@Override
public void finish() {
BaseApplication.getInstance().removeAcitivity(this);
super.finish();
}
/**
* 简化初始化过程
* @param id
* @param
* @return
*/
protected T bindView(int id) {
@SuppressWarnings("unchecked") T t = (T) findViewById(id);
return t;
}
/**
* 绑定布局
* @return
*/
protected abstract int bindLayout();
/**
* 初始化组件
*/
protected abstract void initView();
/**
* 数据
*/
protected abstract void initData();
/**
* 设置监听
*/
protected abstract void setListeners();
/**
* 自动刷新
*/
protected abstract void autoRefresh();
/**
* 加载动画
*/
public void showOrHideWaitBar(boolean show) {
if (mABLoadingDialog != null) {
if (show) {
mABLoadingDialog.show();
} else {
mABLoadingDialog.dismiss();
}
}
}
@Override
public void onDestroy() {
if (mABLoadingDialog != null && mABLoadingDialog.isDialogShowing()) {
mABLoadingDialog.dismiss();
}
super.onDestroy();
}
} 以上便实现了，这个功能的所有效果。
当我们APP使用时也会常用到Application，也就是iOS里面的AppDelegate。可以方便我们实现很多方法
下面是Application的实现
package com.zkteco.pridebiosecurity.base;
import android.app.Activity;
import android.app.Application;
import android.content.Intent;
import com.zkteco.pridebiosecurity.util.CrashHandler;
import com.zkteco.pridebiosecurity.view.login.LoginActivity;
import java.util.Set;
import java.util.WeakHashMap;
/**
* APP主入口
*
* @author sunyd, 2016-7-19
*/
public class BaseApplication extends Application {
private final WeakHashMap mActivityGroup = new WeakHashMap<>(1);
private static BaseApplication sInstance = null;
@Override
public void onCreate() {
super.onCreate();
sInstance = this;
}
/**
* 获取全局context
* @return
*/
public static BaseApplication getInstance() {
return sInstance;
}
/**
* 添加Activity
* @param a
*/
protected void addActivity(Activity a) {
mActivityGroup.put(a, 0);
}
/**
* 移除Activity
* @param a
*/
protected void removeAcitivity(Activity a) {
mActivityGroup.remove(a);
}
/**
* 获取所有Activity
* @param c
* @return
*/
public Activity getActivityOfClass(Class c) {
Set set = mActivityGroup.keySet();
for (Activity a : set) {
if (a.getClass() == c) {
return a;
}
}
return null;
}
/**
* 退出所有Activity
*/
public void exitAllActivities() {
while (mActivityGroup.size() > 0) {
Set as = mActivityGroup.keySet();
((Activity[]) as.toArray())[0].finish();
}
mActivityGroup.clear();
}
} 以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
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