Android Rating Bar 无法设置十进制值

Question

我正在尝试将评分栏的初始评分设置为浮点值。但输出总是完全填满星星！我不知道为什么会这样。

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    ratingText = (TextView) findViewById(R.id.rating);
    ratingBar = ((RatingBar) findViewById(R.id.ratingBar1));
    ratingBar.setRating(Float.parseFloat("3.5"));
    ((RatingBar) findViewById(R.id.ratingBar1))
            .setOnRatingBarChangeListener(this);

}

这是评分栏：

<RatingBar
    android:id="@+id/ratingBar1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:stepSize="0.5"
    android:layout_marginLeft="22dp"
    android:layout_marginTop="28dp" />

Answer 1

尝试像这样以编程方式完成

ratingBar = ((RatingBar) findViewById(R.id.ratingBar1));
ratingBar.setStepSize(0.5f);
ratingBar.ratingBar.setNumStars(5);
ratingBar.ratingBar.setMax(5);
ratingBar.setRating(Float.parseFloat("3.5"));

Answer 2

您只需删除项目中的工具栏。我认为工具栏中存在一些问题。我尝试如下，它有效

ratingBar = ((RatingBar) findViewById(R.id.ratingBar1));
    ratingBar.setRating(Float.parseFloat("3.6"));
    ratingBar = ((RatingBar) findViewById(R.id.ratingBar1));

Answer 3

您正在设置 stepSize="0.5"。您应该将其更改为 0.1。