<com.free.autowraptextview.widget.AutoWrapTextView
        android:id="@+id/awtextview"
        android:layout_width="200dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
  />

private String text = "密码：jokG5456KL542356jsjdherGHS";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ((AutoWrapTextView) findViewById(R.id.awtextview)).setText(text);

}

<declare-styleable name="AutoWrapTextViewStyle">
    <attr name="paddingLeft" format="dimension" />
    <attr name="paddingTop" format="dimension" />
    <attr name="paddingRight" format="dimension" />
    <attr name="paddingBottom" format="dimension" />
    <attr name="textSize" format="dimension" />
    <attr name="textColor" format="color" />
    <attr name="lineSpacingExtra" format="integer" />
</declare-styleable>