LetterBar

一个用于Android的字母索引侧边条控件

快速使用

compile 'com.eric.android.view:letterbar:1.0.2'

属性设置

android:textColor="@color/colorPrimary"

android:textSize="13sp"

app:highlightBackground="#10000000"

app:highlightColor="@color/colorAccent"

代码示例

public class MainActivity extends AppCompatActivity {

private LetterBar letter_bar;

private TextView tv_letter;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

tv_letter = findViewById(R.id.tv_letter);

letter_bar = findViewById(R.id.letter_bar);

//触摸后的监听回调

letter_bar.setOnLetterChangeListener(new LetterBar.OnLetterChangeListner() {

@Override

public void onLetterChanged(String letter) {

tv_letter.setVisibility(View.VISIBLE);

tv_letter.setAlpha(1);

tv_letter.setText(letter);

}

@Override

public void onLetterChoosed(String letter) {

tv_letter.animate().alpha(0).setDuration(500).setListener(new AnimatorListenerAdapter() {

@Override

public void onAnimationEnd(Animator animation) {

super.onAnimationEnd(animation);

tv_letter.setVisibility(View.GONE);

}

});

}

});

}

}

效果图