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TextView objects and truncation on Android screens (designing for multiple screens)
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Small Text"
android:textAppearance="?android:attr/textAppearanceSmall" />

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is your text"
android:ellipsize="marquee" android:lines="1 />

android:lines="3"
android:textIsSelectable="true"
android:fadeScrollbars="false"

android:lines="3"
android:clickable="true"
android:onClick="showDef"
android:ellipsize="start"
android:isScrollContainer="false"

public void showDef(View v) {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage("same text as was set in the text view")
        .setCancelable(false)
        .setNegativeButton("Clear", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                dialog.cancel();
           }
        });

AlertDialog alert = builder.create();
alert.show()