activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/rl" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="16dp" tools:context=".MainActivity" android:background="#e5edf1" > <TextView android:id="@+id/tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Line One\nLine Two\nLine Three\nLine Four\nLine Five\nLine Six" android:background="#fdfbd0" android:textSize="18dp" android:layout_margin="10dp" android:padding="10dp" /> <!-- android:maxLines Makes the TextView be at most this many lines tall. When used on an editable text, the inputType attribute value must be combined with the textMultiLine flag for the maxLines attribute to apply. Must be an integer value, such as "100". This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type. This corresponds to the global attribute resource symbol maxLines. --> <TextView android:id="@+id/tv_second" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Line One\nLine Two\nLine Three\nLine Four\nLine Five\nLine Six" android:background="#eaa3a3" android:maxLines="3" android:scrollbars="vertical" android:textSize="18dp" android:layout_margin="10dp" android:padding="10dp" android:layout_toRightOf="@id/tv" /> <TextView android:id="@+id/tv_third" android:layout_width="wrap_content" android:layout_height="75dp" android:text="Line One\nLine Two\nLine Three\nLine Four\nLine Five\nLine Six" android:background="#a3eabb" android:scrollbars="vertical" android:textSize="18dp" android:layout_toRightOf="@id/tv_second" android:layout_margin="10dp" android:padding="10dp" /> </RelativeLayout>
MainActivity.java
package com.cfsuman.me.androidcodesnippets; import android.app.Activity; import android.content.Context; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.text.method.ScrollingMovementMethod; import android.widget.RelativeLayout; import android.widget.TextView; public class MainActivity extends AppCompatActivity { private Context mContext; private Activity mActivity; private RelativeLayout mRelativeLayout; private TextView mTextViewSecond; private TextView mTextViewThird; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get the application context mContext = getApplicationContext(); // Get the activity mActivity = MainActivity.this; // Get the widgets reference from XML layout mRelativeLayout = (RelativeLayout) findViewById(R.id.rl); mTextViewSecond = (TextView) findViewById(R.id.tv_second); mTextViewThird = (TextView) findViewById(R.id.tv_third); /* public akibat void setMovementMethod (MovementMethod movement) Sets the movement method (arrow key handler) to be used for this TextView. This can be null to disallow using the arrow keys to move the cursor or scroll the view. Be warned that if you want a TextView with a key listener or movement method not to be focusable, or if you want a TextView without a key listener or movement method to be focusable, you must call setFocusable(boolean) again after calling this to get the focusability back the way you want it. Parameters movement : MovementMethod */ /* MovementMethod Provides cursor positioning, scrolling and text selection functionality in a TextView. The TextView delegates handling of key events, trackball motions and touches to the movement method for purposes of content navigation. The framework automatically selects an appropriate movement method based on the content of the TextView. This interface is intended for use by the framework; it should not be implemented directly by applications. */ // Set the scrolling movement method for TextView mTextViewThird.setMovementMethod(new ScrollingMovementMethod()); mTextViewSecond.setMovementMethod(new ScrollingMovementMethod()); } }
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