Tabhost与activitygroup并用

最新推荐文章于 2016-01-20 15:21:10 发布

原创最新推荐文章于 2016-01-20 15:21:10 发布 · 421 阅读

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#布局 #tabhost #relativelayout #解决方案 #launcher

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本文介绍了解决Android中使用TabHost时遇到的问题：从TabHost中的Activity启动另一个Activity后，新Activity不显示在TabHost内。通过使用ActivityGroup管理多个Activity，实现平滑的页面切换。

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不少人发现用完 tabhost 后当在布局中的一个buton中启动另一个activity 就会发现没有tab 卡片也就是说他不在tabhost中启动的Activity 而是另起一页可以这么理解吧总之

让人很头疼今天就介绍一个解决方案解决这个办法

import android.os.Bundle;
import android.app.Activity;
import android.app.TabActivity;
import android.content.Intent;
import android.view.Menu;
import android.widget.TabHost;

public class MainActivity extends TabActivity {
TabHost TabHost;

@SuppressWarnings("deprecation")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TabHost = getTabHost();
TabHost.addTab(TabHost
.newTabSpec("t1")
.setIndicator("美女",
getResources().getDrawable(R.drawable.ic_launcher))
.setContent(new Intent(this, FirstGroupTab.class)));
TabHost.addTab(TabHost
.newTabSpec("t1")
.setIndicator("天使",
getResources().getDrawable(R.drawable.ic_launcher))
.setContent(new Intent(this, meinv24.class)));
TabHost.setCurrentTab(0);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}

xml

第二个类

import android.app.ActivityGroup;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.Window;

//第一个标签页显示的Activity，继承ActivityGroup，管理所有子Activity
public class FirstGroupTab extends ActivityGroup {
//用于管理本Group中的所有Activity
public static ActivityGroup group;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
group = this;
}

@Override
public void onBackPressed() {
//把后退事件交给子Activity处理
group.getLocalActivityManager().getCurrentActivity().onBackPressed();
}

@Override
protected void onStart() {
super.onStart();
//要跳转的Activity
Intent intent = new Intent(this, FirstActivity.class);
// 把Activity转换成一个Window，然后转换成View
Window w = group.getLocalActivityManager().startActivity(
"FirstActivity", intent);
View view = w.getDecorView();
//设置要跳转的Activity显示为本ActivityGroup的内容
group.setContentView(view);
}
}

第三个类

public class FirstActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.s1);

//跳转到第二个Activity
Button btn = (Button) findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//要跳转的Activity
Intent intent = new Intent(FirstActivity.this, zhongjiezhe_3.class);
// 把Activity转换成一个Window，然后转换成View
Window w = FirstGroupTab.group.getLocalActivityManager()
.startActivity("inv",intent);
View view = w.getDecorView();
//设置要跳转的Activity显示为本ActivityGroup的内容
FirstGroupTab.group.setContentView(view);
}
});
}
}

xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<Button
android:id="@+id/btn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="我跳" />
</LinearLayout>

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;

public class zhongjiezhe_3 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.in);
Button bu = (Button) findViewById(R.id.busdcdtton1);
bu.setOnClickListener(new OnClickListener() {

public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent = new Intent(zhongjiezhe_3.this,
FirstActivity.class);
// 把aCTIVITY转换成window 然后转换成view
Window w = FirstGroupTab.group.getLocalActivityManager()
.startActivity("zhongjiezhe_3", intent);
View view = w.getDecorView();
// 设置要跳转的Activity显示为本ActivityGroup的内容
FirstGroupTab.group.setContentView(view);
}
});

}
}

xml