android - TextView 在不同的分辨率下处于不同的高度。拨码不起作用

Question

textView 下方的 bottom 属性缩放错误，TextView 在每个 Android 设备上的高度不同:见附图。

public class MainActivity extends Activity {

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

    RelativeLayout relativeLayout = (RelativeLayout)findViewById(R.id.bar_holder);

    BarView view = new BarView(getApplicationContext());
    int width = (int) getApplicationContext().getResources().getDimension(R.dimen.bar_width_compare);
    int height = 200;
    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(width, height);
    params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
    int left = (int) getApplicationContext().getResources().getDimension(R.dimen.bar_margin_left_right);
    int right = 0;
    int bottom = (int) getApplicationContext().getResources().getDimension(R.dimen.graph_margin_bar_compare_bottom);
    params.setMargins(left, 0, right, bottom);
    view.setBackgroundColor(getApplicationContext().getResources().getColor(R.color.bar_dark_blue));
    view.setLayoutParams(params);
    relativeLayout.addView(view);

    TextView textView = new TextView(getApplicationContext());
    textView.setText("   20  ");
    textView.setTextSize(20);
    textView.setTextColor(getApplicationContext().getResources().getColor(R.color.black_text));
    width = (int) getApplicationContext().getResources().getDimension(R.dimen.bar_width);
    height = 100;

    bottom = (int) getApplicationContext().getResources().getDimension(R.dimen.graph_margin_bar_bottom);
    int offset = getApplicationContext().getResources().getDimensionPixelOffset(R.dimen.graph_margin_bar_bottom);
    int pxSize =  getApplicationContext().getResources().getDimensionPixelSize(R.dimen.graph_margin_bar_bottom);



    RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams(width, height);
    params2.setMargins(0, 0, 0, bottom);
    params2.addRule(Gravity.CENTER_HORIZONTAL);
    params2.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
    params2.addRule(RelativeLayout.ALIGN_LEFT, view.getId());
    textView.setLayoutParams(params2);
    relativeLayout.addView(textView);
    }
}

bars_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="horizontal"
android:layout_marginTop="40dp" >


<RelativeLayout
    android:id="@+id/bar_holder"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_marginTop="20dp"
    android:layout_marginBottom="10dp" >


</RelativeLayout>
</LinearLayout>

维度.xml

<resources>
    <dimen name="graph_margin_bar_bottom">40dp</dimen>
    <dimen name="bar_width_compare">25dp</dimen>
    <dimen name="bar_margin_left_right">10dp</dimen>
    <dimen name="graph_margin_bar_compare_bottom">50dp</dimen>
    <dimen name="bar_width">50dp</dimen>
</resources>

这里有 2 个手机示例，但每个手机看起来都不一样......

三星 Galaxy Tab 3 Lite (density1.0)

三星 Galaxy S4 (density3.0)

Answer 1

Android 将所有实际屏幕尺寸分为四种通用尺寸:小、普通、大和超大。

为正常、小屏幕的“布局”创建三个 floderlayout-large 适用于大屏幕layout-xlarge 用于超大屏幕

将相同的 bars_layout.xml 添加到所有 floder 中并根据屏幕尺寸增加尺寸(例如，如果您在布局 floder 中保持尺寸为 10 dp，那么对于 layout-large 将该尺寸增加到 30 dp，对于 layout-xlarge 则为 60dp)

对于dimens.xml 小而普通的屏幕，将其添加到“values”floder对于大屏幕添加到 values-large floder对于超大添加到 values-xlarge