我想在滚动视图中单击按钮时添加五个编辑文本视图。但是当我单击按钮时，出现的编辑文本视图不在滚动视图中，而是在主线性布局中 怎么办，编辑文本视图才能显示在滚动视图中。
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/mLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/tv_editmessage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/tv_editMessage" />
<EditText
android:id="@+id/et_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textMultiLine"
android:text="@string/et_messageToSend" >
<requestFocus />
</EditText>
<ScrollView
android:layout_width="match_parent"
android:id="@+id/ScrView"
android:layout_height="0dp"
android:layout_weight="1" >
<EditText
android:id="@+id/edittext"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:ems="10"
android:hint="@string/et_display" >
</EditText>
</ScrollView>
<Button
android:id="@+id/bpickperson"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/b_pick" />
<Button
android:id="@+id/balert"
android:layout_width="288dp"
android:layout_height="wrap_content"
android:text="@string/b_alert" />
<Button
android:id="@+id/baddmorecontacts"
android:layout_width="288dp"
android:layout_height="wrap_content"
android:text="@string/b_addmorecontacts" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center" >
<Button
android:id="@+id/b_facebook"
android:layout_width="144dp"
android:layout_height="wrap_content"
android:text="@string/b_facebook" />
<Button
android:id="@+id/b_twitter"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/b_twitter" />
</LinearLayout>
</LinearLayout>
MainActivity
public class MainActivity extends Activity implements LocationListener {
String separator = "; ";
private Button btn_cntct;
public int REQUESTCODE = 1;
private LinearLayout layoutLinear;
private Button btn_addmore_cntct;
int temp;
ScrollView ScrView;
Context c = MainActivity.this;
Button b_alert;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// defining button elements for picking contacts from phone-book
btn_cntct = (Button) findViewById(R.id.bpickperson);
btn_cntct.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// using Intent for fetching contacts from phone-book
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE);
startActivityForResult(intent, REQUESTCODE);
}
});
// defining button and edit-text values for adding mutli edit-texts
// views
temp = 1;
layoutLinear = (LinearLayout) findViewById(R.id.mLayout);
ScrView = (ScrollView)findViewById(R.id.ScrView);
btn_addmore_cntct = (Button) findViewById(R.id.baddmorecontacts);
btn_addmore_cntct.setOnClickListener(OnClick());
EditText editview = new EditText(this);
editview.setText("Add more");
}
// implementing OnClickListener OnClick() method for "btn_addmore_cntct"
// button
private OnClickListener OnClick() {
// TODO Auto-generated method stub
// changing return type "null" to "new OnClickListner"
return new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (temp <= 2) {
EditText tab = new EditText(getApplicationContext());
tab.setLayoutParams(new LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
tab.setEnabled(false);
tab.setFocusable(false);
// layoutLinear.addView(tab,0);
ScrView.addView(tab,0);
temp++;
} else {
// Print message to user Cant add more editText.
Toast.makeText(getApplicationContext(), "No More Contacts",
Toast.LENGTH_SHORT).show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (data != null) {
Uri uri = data.getData();
Log.i("data", uri.toString());
if (uri != null) {
Cursor c = null;
try {
c = getContentResolver()
.query(uri,
new String[] {
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.Phone.TYPE },
null, null, null);
if (c != null && c.moveToFirst()) {
String name = c.getString(0);
String number = c.getString(1);
int type = c.getInt(2);
showSelectedNumber(name, number, type);
}
} finally {
if (c != null) {
c.close();
}
}
}
}
}
// defining showSelectedNummber to display selected contact from phone-book
// to Edit-Text View
String selectedNum = " ";
public void showSelectedNumber(String name, String number, int type) {
if (layoutLinear == null) {
Log.i("layoutLinear is null", "null");
} else {
Log.i("layoutLinear is not null", "not null");
}
EditText userNumber = (EditText) layoutLinear.getChildAt(0);
if (userNumber == null) {
Log.i("edittext is null", "null");
} else {
Log.i("edittext is not null", "not null");
}
String typeNumber = (String) ContactsContract.CommonDataKinds.Phone
.getTypeLabel(getResources(), type, "");
// preventing number duplicacy and raising toast
if (selectedNum.contains(number)) {
// do nothing
// alert user that number is already selected
Toast.makeText(getApplicationContext(),
"Selected Contact Already Exists", Toast.LENGTH_SHORT)
.show();
} else
userNumber.setText(name + ":" + number + " " + typeNumber);
selectedNum = selectedNum + number;
}
}
logcat的
02-07 11:44:46.116: D/AndroidRuntime(1281): Shutting down VM
02-07 11:44:46.116: W/dalvikvm(1281): threadid=1: thread exiting with uncaught exception (group=0x40015560)
02-07 11:44:46.126: E/AndroidRuntime(1281): FATAL EXCEPTION: main
02-07 11:44:46.126: E/AndroidRuntime(1281): java.lang.IllegalStateException: ScrollView can host only one direct child
02-07 11:44:46.126: E/AndroidRuntime(1281): at android.widget.ScrollView.addView(ScrollView.java:220)
02-07 11:44:46.126: E/AndroidRuntime(1281): at com.example.zzz1.MainActivity$4.onClick(MainActivity.java:157)
02-07 11:44:46.126: E/AndroidRuntime(1281): at android.view.View.performClick(View.java:2485)
02-07 11:44:46.126: E/AndroidRuntime(1281): at android.view.View$PerformClick.run(View.java:9080)
02-07 11:44:46.126: E/AndroidRuntime(1281): at android.os.Handler.handleCallback(Handler.java:587)
02-07 11:44:46.126: E/AndroidRuntime(1281): at android.os.Handler.dispatchMessage(Handler.java:92)
02-07 11:44:46.126: E/AndroidRuntime(1281): at android.os.Looper.loop(Looper.java:123)
02-07 11:44:46.126: E/AndroidRuntime(1281): at android.app.ActivityThread.main(ActivityThread.java:3683)
02-07 11:44:46.126: E/AndroidRuntime(1281): at java.lang.reflect.Method.invokeNative(Native Method)
02-07 11:44:46.126: E/AndroidRuntime(1281): at java.lang.reflect.Method.invoke(Method.java:507)
02-07 11:44:46.126: E/AndroidRuntime(1281): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-07 11:44:46.126: E/AndroidRuntime(1281): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-07 11:44:46.126: E/AndroidRuntime(1281): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：1)
在scrollview ScrView.addView（tab）中添加edittext
答案 1 :(得分：0)
ScrollView必须有子布局才能添加任何视图。
将文本视图添加到线性布局 将LinearLayout添加到Scrollview。 将scrollview添加到父布局
这是xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mainl"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:id="@+id/scLay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>
</LinearLayout>
这是活动java类
LinearLayout l,scl;
Button b1;
EditText e1,e2,e3,e4,e5;
ScrollView sv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
l = (LinearLayout) findViewById(R.id.mainl);
scl=(LinearLayout) findViewById(R.id.scLay);
sv=(ScrollView)findViewById(R.id.scrollView1);
b1=(Button)findViewById(R.id.button1);
e1=new EditText(this);
e2=new EditText(this);
e3=new EditText(this);
e4=new EditText(this);
e5=new EditText(this);
b1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
scl.addView(e1);
scl.addView(e2);
scl.addView(e3);
scl.addView(e4);
scl.addView(e5);
}
});
}