兩個XML文件，但在第一個活動訪問第二XML控制

Question

First_layout.xml

<LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android"  
      xmlns:tools="http://schemas.android.com/tools" 
      android:id="@+id/LinearLayout2" android:layout_width="match_parent" 
      android:layout_height="match_parent" android:orientation="vertical"> 

      <TextView android:id="@+id/tactiveDateDisplay" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" android:text="TextView" /> 
</LinearLayout> 

Second_layout.xml

 <RelativeLayout 
      xmlns:android="http://schemas.android.com/apk/res/android"  
      xmlns:tools="http://schemas.android.com/tools" 
      android:id="@+id/LinearLayout2" android:layout_width="match_parent" 
      android:layout_height="match_parent" android:orientation="vertical"> 

      <TextView android:id="@+id/tactiveDateDisplay1" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" android:text="TextView" /> 
</RelativeLayout> 

MainActivity.java

public class MainActivity extends Activity 
    { 
    TextView tv; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
      tv=(TextView)findViewById(R.layout.activity_main); 
    call(); 
} 
     private void call() 
{ 
    setContentView(R.layout.seccond);//second xml file 
    //At this line i want to access the second layout textview control 
} 

    } 

這是我的代碼，所以如何訪問MainActvity.java文件中的second_layout.xml文件控件TextView

Answer 1

public class MainActivity extends Activity 
    { 
    TextView tv; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
      tv=(TextView)findViewById(R.layout.activity_main); 
    Intent intent=new Intent(this,MainActivity_1.class); 
      startActivity(intent); 
} 
public class MainActivity_1 extends Activity 
    { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.seccond);//second xml file 
    //At this line i want to access the second layout textview control 
} 
In Androidmanifest.xml 

Answer 2

第一和第二佈局爲一個活動？

如果是，您可以創建一個佈局，其可見性可見或消失。

我認爲你應該爲每個佈局創建一個活動，並用startActivity調用活動。