老风格,废话不多说了,直接给大家贴android获取屏幕宽高的代码了。
主要代码:
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package com.km.screeninfo;
import android.os.bundle;
import android.support.v.app.fragment;
import android.support.v.app.fragmentactivity;
import android.util.displaymetrics;
import android.view.layoutinflater;
import android.view.menu;
import android.view.menuitem;
import android.view.view;
import android.view.viewgroup;
import android.widget.textview;
public class mainactivity extends fragmentactivity {
@override
protected void oncreate(bundle savedinstancestate) {
super .oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
if (savedinstancestate == null ) {
getsupportfragmentmanager().begintransaction().add(r.id.container, new placeholderfragment()).commit();
}
}
/**
* a placeholder fragment containing a simple view.
*/
public static class placeholderfragment extends fragment {
private textview tvmodel;
private textview tvscreenheight;
private textview tvscreenheight;
private textview tvscreenheight;
private textview tvscreenwidth;
private textview tvscreenwidth;
private textview tvscreenwidth;
private textview tvscreendensity;
private textview tvscreendensitydpi;
private textview tvscreendensity;
private textview tvscreendensitydpi;
private textview tvscreenwidth;
private textview tvscreenheight;
public placeholderfragment() {
}
@override
public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) {
view rootview = inflater.inflate(r.layout.fragment_main, container, false );
tvmodel = (textview) rootview.findviewbyid(r.id.tv_model);
tvscreenheight = (textview) rootview.findviewbyid(r.id.tv_screen_height);
tvscreenheight = (textview) rootview.findviewbyid(r.id.tv_screen_height);
tvscreenheight = (textview) rootview.findviewbyid(r.id.tv_screen_height);
tvscreenheight = (textview) rootview.findviewbyid(r.id.tv_screen_height);
tvscreenwidth = (textview) rootview.findviewbyid(r.id.tv_screen_width);
tvscreenwidth = (textview) rootview.findviewbyid(r.id.tv_screen_width);
tvscreenwidth = (textview) rootview.findviewbyid(r.id.tv_screen_width);
tvscreenwidth = (textview) rootview.findviewbyid(r.id.tv_screen_width);
tvscreendensity = (textview) rootview.findviewbyid(r.id.tv_screen_density);
tvscreendensitydpi = (textview) rootview.findviewbyid(r.id.tv_screen_densitydpi);
tvscreendensity = (textview) rootview.findviewbyid(r.id.tv_screen_density);
tvscreendensitydpi = (textview) rootview.findviewbyid(r.id.tv_screen_densitydpi);
tvmodel.settext(android.os.build.model);
// 获取屏幕密度(方法)
int screenwidth = getactivity().getwindowmanager().getdefaultdisplay().getwidth(); // 屏幕宽(像素,如:px)
int screenheight = getactivity().getwindowmanager().getdefaultdisplay().getheight(); // 屏幕高(像素,如:p)
tvscreenheight.settext(screenheight + " px" );
tvscreenwidth.settext(screenwidth + " px" );
// 获取屏幕密度(方法)
displaymetrics dm = getresources().getdisplaymetrics();
float density = dm.density; // 屏幕密度(像素比例:./././.)
int densitydpi = dm.densitydpi; // 屏幕密度(每寸像素:///)
float xdpi = dm.xdpi;
float ydpi = dm.ydpi;
int screenwidth = dm.widthpixels; // 屏幕宽(像素,如:px)
int screenheight = dm.heightpixels; // 屏幕高(像素,如:px)
tvscreenheight.settext(screenheight + " px" );
tvscreenwidth.settext(screenwidth + " px" );
tvscreendensity.settext(density + "" );
tvscreendensitydpi.settext(densitydpi + "" );
// 获取屏幕密度(方法)
displaymetrics dm = new displaymetrics();
getactivity().getwindowmanager().getdefaultdisplay().getmetrics(dm);
density = dm.density; // 屏幕密度(像素比例:./././.)
densitydpi = dm.densitydpi; // 屏幕密度(每寸像素:///)
xdpi = dm.xdpi;
ydpi = dm.ydpi;
tvscreendensity.settext(density + "" );
tvscreendensitydpi.settext(densitydpi + "" );
int screenwidth = dm.widthpixels; // 屏幕宽(px,如:px)
int screenheight = dm.heightpixels; // 屏幕高(px,如:px)
tvscreenheight.settext(screenheight + " px" );
tvscreenwidth.settext(screenwidth + " px" );
float screenwidthdip = (dm.widthpixels / density); // 屏幕宽(dip,如:dip)
float screenheightdip = (dm.heightpixels / density); // 屏幕宽(dip,如:dip)
tvscreenheight.settext(screenheightdip + " dip" );
tvscreenwidth.settext(screenwidthdip + " dip" );
return rootview;
}
}
}
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activity_main.xml:
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<framelayout xmlns:android= "http://schemas.android.com/apk/res/android"
xmlns:tools= "http://schemas.android.com/tools"
android:id= "@+id/container"
android:layout_width= "match_parent"
android:layout_height= "match_parent"
tools:context= "com.km.screeninfo.mainactivity"
tools:ignore= "mergerootframe" />
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
tools:context= "com.km.screeninfo.mainactivity$placeholderfragment" >
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "match_parent"
android:orientation= "vertical" >
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "手机型号:"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_model"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_marginbottom= "dip"
android:layout_margintop= "dip"
android:text= "方法一:getdefaultdisplay().geth/w()"
android:textcolor= "#aaaa"
android:textsize= "sp" />
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:layout_margintop= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "屏幕高(一):"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_height"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "屏幕宽(一):"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_width"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_marginbottom= "dip"
android:layout_margintop= "dip"
android:text= "方法二:getresources().getdisplaymetrics().h/w"
android:textcolor= "#aaaa"
android:textsize= "sp" />
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:layout_margintop= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "屏幕高(二):"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_height"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "屏幕宽(二):"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_width"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:layout_margintop= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "density:"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_density"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_marginleft= "dip"
android:text= "densitydpi:"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_densitydpi"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_marginbottom= "dip"
android:layout_margintop= "dip"
android:text= "方法三:getdefaultdisplay().getmetrics(displaymetrics).h/w"
android:textcolor= "#aaaa"
android:textsize= "sp" />
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:layout_margintop= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "屏幕高(三):"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_height"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "屏幕宽(三):"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_width"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:layout_margintop= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "density:"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_density"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_marginleft= "dip"
android:text= "densitydpi:"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_densitydpi"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_marginbottom= "dip"
android:layout_margintop= "dip"
android:text= "屏幕宽高(px/density)"
android:textcolor= "#aaaa"
android:textsize= "sp" />
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:layout_margintop= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "屏幕高:"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_height"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<linearlayout
android:layout_width= "match_parent"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:orientation= "horizontal" >
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:text= "屏幕宽:"
android:textstyle= "bold" />
<textview
android:id= "@+id/tv_screen_width"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content" />
</linearlayout>
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_marginbottom= "dip"
android:layout_margintop= "dip"
android:text= "科普:"
android:textcolor= "#aaaa"
android:textsize= "sp" />
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:text= "density = densitydpi/" />
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:text= "px(pixels) = dip * (densitydpi/) = dip*density" />
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_margin= "dip"
android:text= "dip(device independent pixels) = dp " />
<textview
android:layout_width= "wrap_content"
android:layout_margin= "dip"
android:layout_height= "wrap_content"
android:text= "dip = (px * )/densitydpi = px / density" />
<textview
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_margin= "dip" />
</linearlayout>
</scrollview>
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ps:在 activity 中获得屏幕的宽和高
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int srceenw = this .getwindowmanager().getdefaultdisplay().getwidth();
int screenh = this .getwindowmanager().getdefaultdisplay().getheight();
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如果需要适应不同分辨率的屏幕,则按照以下方式操作:
准备多套不同的图片:
分别放hdpi、mdpi、ldp文件夹中;
摆放控件的时候要得到屏幕宽高度,然后在程序中设定控件的百分乘屏幕的宽和高。