单个选项卡中有 2 个活动

Question

我有 4 个标签。一个选项卡 1（响应）我想开始另一项活动，例如单击“继续”按钮，并且应该转到另一个页面（响应 1），其中有后退按钮。一切都应该在选项卡 1 本身上。我遇到的问题是，如果我运行 4 到 5 次，就会出现堆栈溢出错误。

响应.Java

package com.muo.Livegroups;

import android.app.ActivityGroup;
import android.app.LocalActivityManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.util.Log;

public class Respond extends ActivityGroup 
{
    protected static LocalActivityManager mLocalActivityManager;
    public static final String LOG_TAG = "muo";
    @Override   
    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.respond);

        //Continue button on Respond page
        Button next1 = (Button) findViewById(R.id.Continue);
        next1.setOnClickListener(new View.OnClickListener() 
        {
            public void onClick(View view) 
            {
                Intent myIntent = new Intent(view.getContext(), Respond1.class);
                startActivityForResult(myIntent, 0);
            //  StringBuffer urlString = new StringBuffer();
            //  myIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            //  replaceContentView("Respond1",myIntent);

                int mInt=0;
                Log.v(LOG_TAG, "mInt Value: " + mInt);
            }
        });
    }

    public void replaceContentView(String id, Intent newIntent) 
    {
        View view = getLocalActivityManager()
                        .startActivity(id,newIntent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY ))
                        .getDecorView(); 
        this.setContentView(view);
    }
}

响应1.Java

package com.muo.Livegroups;

import android.app.ActivityGroup;
import android.app.LocalActivityManager;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class Respond1 extends ActivityGroup 
{
    protected static LocalActivityManager mLocalActivityManager;
    public static final String LOG_TAG = "muo1";
    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.respond1);

        Button next = (Button) findViewById(R.id.Button03);
        next.setOnClickListener(new View.OnClickListener() 
        {
            public void onClick(View view) 
            {
                Intent intent = new Intent();
                setResult(RESULT_OK, intent);
                finish();
            //  Intent myIntent = new Intent(view.getContext(), Respond.class);
            //  StringBuffer urlString = new StringBuffer();
            //  myIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            //  replaceContentView("Respond",intent);

                int mInt1=0;
                Log.v(LOG_TAG, "mInt Value: " + mInt1);
            }
        });
    }

    public void replaceContentView(String id, Intent newIntent) 
    {
        View view = getLocalActivityManager()
                        .startActivity(id,newIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP ))
                        .getDecorView(); 
        this.setContentView(view);
    }
}

Answer 1

您应该考虑将这两个活动片段并将它们放在一个活动中在选项卡中。如果您使用的 api 级别低于 3.0，请查看 android 兼容性包。

Answer 2

主要活动应该是 ActivityGroup 并将此代码放在开始新活动的位置

  Intent intent = new Intent(v.getContext(), Activity1.class);
Activity1 parentActivity = (Activity1)getParent();  
parentActivity.replaceContentView("activity1", intent, 
             Intent.FLAG_ACTIVITY_REORDER_TO_FRONT );