textView 下方的底部属性缩放错误,TextView在每个Android设备上的高度不同:请参阅附图。
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>
dimens.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>
以下是两部手机的例子,但每部手机的外观都不同......
三星Galaxy Tab 3 Lite(密度1.0)
三星Galaxy S4(密度3.0)
答案 0 :(得分:3)
Android将所有实际屏幕尺寸分为四种通用尺寸:小尺寸,普通尺寸,大尺寸和超大尺寸。
为&#34; layout&#34;创建三个floder对于正常的小屏幕 布局 - 大屏幕 layout-xlarge for extra-large screen
将相同的bars_layout.xml添加到所有floder中,并根据屏幕大小增加大小(例如,如果布局中的保持大小为10 dp,则布局大,则将该大小增加到30 dp,而layout-xlarge则为60dp)< / p>
对于dimens.xml小和普通屏幕,将其添加到&#34;值&#34; floder 对于大屏幕添加值 - 大型floder 对于超大的添加值-xlarge
答案 1 :(得分:1)
setMargins(int,int,int,int)使用的是像素,而不是DIP,所以在每个设备上,相同大小的像素看起来不同,你需要将DIP转换为像素,然后使用该值将setMargins()转换为
答案 2 :(得分:0)
将文本高度与densityDpi相乘,并将文本大小与scaledDensity值相乘。所以它将支持不同的决议。
DisplayMetrics dm = context.getResources().getDisplayMetrics();
int densityDpi = dm.densityDpi;
float spi = dm.scaledDensity;
textheight = 100 * densityDpi;
textSize = 20 * spi;