Android 文字轮播

简单的文字轮播，效果图如下（事实上是比较慢的，ps 很烂才弄成了这样）：

需要两个步骤：

1.复制工具类到项目中

import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;

import android.annotation.SuppressLint;
import android.widget.TextView;

/**
 * author: wu
 * date: on 2018/10/13.
 * describe:自定义TextView，实现轮播
 */

@SuppressLint("AppCompatCustomView")
public class ForcedTextView extends TextView {


    public ForcedTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
        if (focused) {
            super.onFocusChanged(focused, direction, previouslyFocusedRect);
        }
    }

    public void onWindowFocusChanged(boolean hasWindowFocus) {
        if (hasWindowFocus) {
            super.onWindowFocusChanged(hasWindowFocus);
        }
    }

    public boolean isFocused() {
        return true;
    }
}

2.再 xml 文件中添加如下代码即可：

    <com.example.qd.handlerlizi.ForcedTextView
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:text="让我们荡起双桨"
        android:singleLine="true"
        android:marqueeRepeatLimit="marquee_forever"
        android:gravity="center"
        android:ellipsize="marquee"
        android:textSize="18dp"/>

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