我想显示每个国家/地区的提示。当我单击国家/地区名称时，它应显示说明。为此，我设计了XML，其相对布局包含两个或多个文本视图（country1，country2）和一个文本视图，以便在单击任何国家/地区时显示描述。
问题是，当我点击国家1时，国家2不会显示运行时文本视图。
但是对于国家3，当我点击它时，它显示在底部。所以这意味着文本视图没有对齐。我得到了这个概念，但我仍然坚持如何实现它。
我正在使用API版本21
这是我的Java：
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.ScrollView;
import android.widget.TextView;
public class savev extends Activity implements OnClickListener{
TextView t1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.country);
t1=(TextView) findViewById(R.id.textview4);
t1.setVisibility(View.GONE);
findViewById(R.id.textview1).setOnClickListener(this);
findViewById(R.id.textview2).setOnClickListener(this);
findViewById(R.id.textview3).setOnClickListener(this);
}
public void toggle_contents(View v,int r,int s){
/*RelativeLayout.LayoutParams p = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
p.addRule(RelativeLayout.BELOW, r);*/
t1.setVisibility(t1.isShown()? View.GONE: View.VISIBLE);
t1.setText(s);
/*t1.setLayoutParams(p);*/
}
@Override
public void onClick(View v)
{
switch (v.getId())
{
case R.id.textview1:
toggle_contents(v,R.id.textview1,R.string.country1Meaning);
break;
case R.id.textview2:
toggle_contents(v,R.id.textview2,R.string.country2Meaning);
break;
case R.id.textview3:
toggle_contents(v,R.id.textview3,R.string.country1Meaning);
break;
default:break;
}
}
}
这是我的XML：
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:fillViewport="true">
<RelativeLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/rl"
>
<TextView
android:id="@+id/textview1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:color="#FFFFFF"
android:padding="25dip"
android:text="country1"
android:textStyle="bold"
android:clickable="true"
android:background="#D8D8D8"
>
</TextView>
<TextView
android:id="@+id/textview4"
android:drawablePadding="12dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="12dip"
android:drawableLeft="@drawable/customborder"
android:drawableStart="@drawable/customborder"
android:background="#FF0000"
>
</TextView>
<TextView
android:id="@+id/textview2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:color="#FFFFFF"
android:padding="25dip"
android:text="country2"
android:textStyle="bold"
android:clickable="true"
android:background="#D8D8D8"
android:layout_below="@+id/textview1"
>
</TextView>
<TextView
android:id="@+id/textview3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:color="#FFFFFF"
android:padding="25dip"
android:text="country3"
android:textStyle="bold"
android:clickable="true"
android:background="#D8D8D8"
android:layout_below="@+id/textview2"
>
</TextView>
</RelativeLayout>
</ScrollView>
答案 0 :(得分：0)
将相对布局更改为线性
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:fillViewport="true">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/mainLayout"
>
<TextView
android:id="@+id/textview1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:color="#FFFFFF"
android:padding="25dip"
android:text="country1"
android:textStyle="bold"
android:clickable="true"
android:background="#D8D8D8"
>
</TextView>
<TextView
android:id="@+id/textview2"
android:drawablePadding="12dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="12dip"
android:drawableLeft="@drawable/customborder"
android:drawableStart="@drawable/customborder"
android:background="#FF0000"
>
</TextView>
<TextView
android:id="@+id/textview3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:color="#FFFFFF"
android:padding="25dip"
android:text="country2"
android:textStyle="bold"
android:clickable="true"
android:background="#D8D8D8"
android:layout_below="@+id/textview1"
>
</TextView>
<TextView
android:id="@+id/txtDescription"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:color="#FFFFFF"
android:padding="25dip"
android:visibility="gone
android:textStyle="bold"
android:clickable="true"
android:background="#D8D8D8"
android:layout_below="@+id/textview2"
>
</TextView>
</RelativeLayout>
</ScrollView>
动态更改说明文字视图位置：
public class savev extends Activity implements OnClickListener{
TextView txtDesc;
ViewGroup mainContainer; //Linearlayout with textviews
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.country);
txtDesc=(TextView) findViewById(R.id.textview4);
mainContainer = (ViewGroup) findViewId(R.id.mainLayout);
txtDesc.setVisibility(View.GONE);
findViewById(R.id.textview1).setOnClickListener(this);
findViewById(R.id.textview2).setOnClickListener(this);
findViewById(R.id.textview3).setOnClickListener(this);
}
@Override
public void onClick(View v)
{
switch (v.getId())
{
case R.id.textview1:
txtDesc.setText(getString(R.string.country1Meaning));
break;
case R.id.textview2:
txtDesc.setText(getString(R.string.country2Meaning));
break;
case R.id.textview3:
txtDesc.setText(getString(R.string.country3Meaning));
break;
default:break;
}
mainContainer.removeView (txtDesc)
int pos = mainContainer.indexOfChild(v);
if(pos>0) {
txtDesc.setVisibility(VISIBLE);
if(pos == getChildCount)
mainContainer.addView(txtDesc);
else
mainContainer.addView(txtDesc,pos+1);
}
}
}