如何将EditText转换为可编辑的文本文件（如NotePad）

Question

Hi

My problem is, that when I have a blank screen with ScrollView and EditText . I wanted my app to allow user to write what ever and where ever he/she wants, BUT when I ran the app, you were only allowed to type in the middle. (I stretched the EditText to cover the whole screen)

Here is my screen:

Here is the screen I should/need to have:

Here is the code:

 <?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="onhar.personalnote.Writing_Table">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ScrollView
            android:layout_width="match_parent"
            android:layout_height="1000dp">

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="1000dp">



            </RelativeLayout>

        </ScrollView>

    </RelativeLayout>

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

    </android.support.design.widget.AppBarLayout>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        android:src="@drawable/plusicon" />

    <include layout="@layout/content_writing__table" />

</android.support.design.widget.CoordinatorLayout>

Is this possible?

Answer 1

In your XML you need android:gravity="top|start" on your EditText.

If you want to do it in Java code then it's: myEditText.setGravity(Gravity.TOP | Gravity.START);

Answer 2

Where position is an int:

editText1.setSelection(position);

editText1.setSelection(0); //You can set it as 0.

Answer 3

EditText yourEt= (EditText) findViewById(R.id.yourEt);
yourEt.requestFocus();
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(yourEt, InputMethodManager.SHOW_IMPLICIT);

// You can set focus of edittext only. 
// Please share your code.  

Answer 4

First thing is that you should never use fixed height. And answer to your query is add this attribute android:fillViewport="true" to your ScrollView . Also add android:gravity="top" to you EditText.

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

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fillViewport="true">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <EditText
                android:id="@+id/edt"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:gravity="top"
                android:hint="Hello" />
        </RelativeLayout>
    </ScrollView>
</RelativeLayout>