自訂View仿TabHost的實現(一)

Activity1如下:

package cn.com;import android.app.Activity;import android.os.Bundle;public class Activity1 extends Activity{     @Override    protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    //設定setTitle應該在setTitle之前    //否則不起作用    setTitle("Activity1");    setContentView(R.layout.activity_1);    }}

Activity2如下:

package cn.com;import android.app.Activity;import android.os.Bundle;public class Activity2 extends Activity{     @Override    protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    //設定setTitle應該在setTitle之前    //否則不起作用    setTitle("Activity2");    setContentView(R.layout.activity_2);    }}

Activity3如下:

package cn.com;import android.app.Activity;import android.os.Bundle;public class Activity3 extends Activity{     @Override    protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    //設定setTitle應該在setTitle之前    //否則不起作用    setTitle("Activity3");    setContentView(R.layout.activity_3);    }}

Activity4如下:

package cn.com;import android.app.Activity;import android.os.Bundle;public class Activity4 extends Activity{     @Override    protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    //設定setTitle應該在setTitle之前    //否則不起作用    setTitle("Activity4");    setContentView(R.layout.activity_4);    }}

BottomMenuView如下:

package cn.com;import android.app.Activity;import android.content.Context;import android.content.Intent;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.LinearLayout;//自訂View.仿TabHost的實現public class BottomMenuView extends LinearLayout{private Context mContext;private LinearLayout mLinearLayout1;private LinearLayout mLinearLayout2;private LinearLayout mLinearLayout3;private LinearLayout mLinearLayout4;private String mCurrentActivityTitle;private final static String ACTIVITY_NAME_1="Activity1";private final static String ACTIVITY_NAME_2="Activity2";private final static String ACTIVITY_NAME_3="Activity3";private final static String ACTIVITY_NAME_4="Activity4";public BottomMenuView(Context context, AttributeSet attrs) {super(context, attrs);mContext=context;initView();}private void initView(){View bottomMenuView=LayoutInflater.from(mContext).inflate(R.layout.bottommenu, null, false);ViewGroup.LayoutParams params=new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT);this.addView(bottomMenuView,params);mLinearLayout1=(LinearLayout)bottomMenuView.findViewById(R.id.menu_LinearLayout1);mLinearLayout2=(LinearLayout)bottomMenuView.findViewById(R.id.menu_LinearLayout2);mLinearLayout3=(LinearLayout)bottomMenuView.findViewById(R.id.menu_LinearLayout3);mLinearLayout4=(LinearLayout)bottomMenuView.findViewById(R.id.menu_LinearLayout4);BottomMenuOnClickListener clickListener=new BottomMenuOnClickListener();mLinearLayout1.setOnClickListener(clickListener);mLinearLayout2.setOnClickListener(clickListener);mLinearLayout3.setOnClickListener(clickListener);mLinearLayout4.setOnClickListener(clickListener);setEveryMenuStatus();}/** *  * 1 在每個menu對應的Activity中設定其Title * 2 在此判斷當前顯示是哪一個Activity.使得 *   當前Activity對應的Menu不可再次點擊. */private void setEveryMenuStatus(){mCurrentActivityTitle=(String) ((Activity)mContext).getTitle();if (mCurrentActivityTitle.equals(ACTIVITY_NAME_1)) {mLinearLayout1.setClickable(false);}else if (mCurrentActivityTitle.equals(ACTIVITY_NAME_2)) {mLinearLayout2.setClickable(false);}else if (mCurrentActivityTitle.equals(ACTIVITY_NAME_3)) {mLinearLayout3.setClickable(false);}else if (mCurrentActivityTitle.equals(ACTIVITY_NAME_4)) {mLinearLayout4.setClickable(false);}}private class BottomMenuOnClickListener implements OnClickListener{public void onClick(View v) {switch (v.getId()) {case R.id.menu_LinearLayout1:Intent intent1=new Intent(mContext, Activity1.class);mContext.startActivity(intent1);break;case R.id.menu_LinearLayout2:Intent intent2=new Intent(mContext, Activity2.class);mContext.startActivity(intent2);break;case R.id.menu_LinearLayout3:Intent intent3=new Intent(mContext, Activity3.class);mContext.startActivity(intent3);break;case R.id.menu_LinearLayout4:Intent intent4=new Intent(mContext, Activity4.class);mContext.startActivity(intent4);break;default:break;}}}}