我正在开发一个应用程序，我必须使我们的应用程序适合每个设备 - 平板电脑和Android手机。现在我想在运行时获取设备的高度和宽度，并在我的代码中实现它，以便我的应用程序适用于横向和纵向。
我的XML文件是：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2" android:orientation="vertical">
<LinearLayout android:id="@+id/linearLayout1" android:layout_height="match_parent"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_weight="1">
<LinearLayout android:id="@+id/linearLayout1" android:layout_height="match_parent"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_weight="1" android:weightSum="100">
<TextView android:id="@+id/letter1" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="60"></TextView>
<TextView android:id="@+id/letter2" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="20"></TextView>
<TextView android:id="@+id/letter3" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="20"></TextView>
</LinearLayout>
<LinearLayout android:id="@+id/linearLayout1" android:layout_height="match_parent"
android:gravity="center"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_weight="1">
<ImageView android:id="@+id/imag"
android:gravity="center"
android:scaleType = "fitCenter"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:layout_gravity="center">
</ImageView>
</LinearLayout>
</LinearLayout>
<LinearLayout android:layout_gravity="bottom"
android:id="@+id/linearLayout2"
android:layout_height="wrap_content" android:orientation="horizontal" android:layout_width="match_parent">
<Button android:id="@+id/previous" android:layout_width="wrap_content" android:layout_weight="1" android:text="Previous" android:layout_height="wrap_content" ></Button>
<Button android:id="@+id/practice" android:layout_width="wrap_content" android:layout_weight="1" android:text="Practice" android:layout_height="wrap_content" android:onClick="onClick"></Button>
<Button android:id="@+id/home" android:layout_width="wrap_content" android:layout_weight="1" android:text="Home" android:layout_height="wrap_content"></Button>
<Button android:id="@+id/spell" android:layout_width="wrap_content" android:layout_weight="1" android:text="Spell" android:layout_height="wrap_content" android:onClick="Content"></Button>
<Button android:id="@+id/next" android:layout_width="wrap_content" android:layout_weight="1" android:text="Next" android:layout_height="wrap_content" android:onClick="Content"></Button>
</LinearLayout>
</LinearLayout>
我的Java文件是：
package com.android;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Typeface;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.SimpleGestureFilter.SimpleGestureListener;
public class MySwara extends Activity implements SimpleGestureListener {
private SimpleGestureFilter detector;
private static int counter=-1;
private String[] mBtn1 ={"C","D","E","F","G","H","IÄ","J","K","L","M","N","O","CA","CB"};
private TextView txtLetter;
private ImageView imgLetter;
private int[] imgArr={R.drawable.w1,R.drawable.w2,R.drawable.w3,R.drawable.w4,R.drawable.w5,R.drawable.w6,R.drawable.w7,R.drawable.w8,R.drawable.w9,R.drawable.w10,R.drawable.w11,R.drawable.w12,
R.drawable.w13,R.drawable.w14,R.drawable.w15};
private TextView txtKannada;
private String[] mBtn2 = {"CgÀ¸À","DªÉÄ","E°","F±À","GqÀ","Hl","IĶ","J¯É","Kr","LzÀÄ","M¯É","N¯É","OµÀzsÀ",
"CAUÀr","CB"};
private String[] mBtn3 = {"ARASA","AME","ILI","ISA","UDA","UTA","RUSHI","ELE","EDI","AIDU","oLE","OLE","AUSHADA",
"ANGADI","AHA"};
private TextView txtEnglish;
private int[] mAudio = {R.raw.a,R.raw.b,R.raw.c,R.raw.d,R.raw.e,R.raw.f,R.raw.g,R.raw.h,R.raw.i,R.raw.j,
R.raw.k,R.raw.l,R.raw.m,R.raw.n,R.raw.o};
protected MediaPlayer mp;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.content);
detector = new SimpleGestureFilter(this,this);
if(counter == -1)
counter =getIntent().getExtras().getInt("POSITION");
Typeface tf = Typeface.createFromAsset(getBaseContext().getAssets(), "fonts/brhknd.ttf");
txtLetter = (TextView)findViewById(R.id.letter1);
txtKannada = (TextView)findViewById(R.id.letter2);
txtEnglish = (TextView)findViewById(R.id.letter3);
imgLetter = (ImageView)findViewById(R.id.imag);
txtLetter.setTypeface(tf);
txtLetter.setText(mBtn1[counter]);
//txtLetter.setTextSize(350);
Bitmap bm = BitmapFactory.decodeResource(getResources(), imgArr[counter]);
imgLetter.setImageBitmap(bm);
txtKannada.setTypeface(tf);
txtKannada.setText(mBtn2[counter]);
//txtKannada.setTextSize(100);
txtEnglish.setText(mBtn3[counter]);
//txtEnglish.setTextSize(50);
Button btnNext = (Button)findViewById(R.id.next);
btnNext.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(counter<imgArr.length-1)
counter++;
changeContent();
}
});
Button mPlay = (Button)findViewById(R.id.spell);
mPlay.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mp = MediaPlayer.create(MySwara.this, mAudio[counter]);
mp.start();
}
});
Button btnPrvs = (Button)findViewById(R.id.previous);
btnPrvs.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(counter>0)
counter--;
changeContent();
}
});
Button btnPractice = (Button)findViewById(R.id.practice);
btnPractice.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MySwara.this,DrawingActivity.class);
startActivity(intent);
}
});
Button btnHome = (Button)findViewById(R.id.home);
btnHome.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MySwara.this,mainClass.class);
startActivity(intent);
}
});
}
public void changeContent()
{
txtLetter.setText(mBtn1[counter]);
txtKannada.setText(mBtn2[counter]);
txtEnglish.setText(mBtn3[counter]);
//imgLetter.setBackgroundResource(imgArr[counter]);
Bitmap bm = BitmapFactory.decodeResource(getResources(), imgArr[counter]);
imgLetter.setImageBitmap(bm);
}
@Override
public boolean dispatchTouchEvent(MotionEvent me){
this.detector.onTouchEvent(me);
return super.dispatchTouchEvent(me);
}
@Override
public void onSwipe(int direction) {
String str = "";
switch (direction) {
case SimpleGestureFilter.SWIPE_RIGHT : str = "Swipe Right";
if(counter>0)
counter--;
changeContent();
break;
case SimpleGestureFilter.SWIPE_LEFT : str = "Swipe Left";
if(counter<imgArr.length-1)
counter++;
changeContent();
break;
}
}
@Override
public void onDoubleTap() {
// TODO Auto-generated method stub
}
}
答案 0 :(得分：71)
Display mDisplay = activity.getWindowManager().getDefaultDisplay();
final int width = mDisplay.getWidth();
final int height = mDisplay.getHeight();
这样你就可以获得屏幕尺寸。
由于此API已在新SDK版本中进行了描述，因此您可以使用此功能。
DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
int width = displayMetrics.widthPixels;
int height = displayMetrics.heightPixels;
答案 1 :(得分：23)
在活动范围中执行：
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int w = dm.widthPixels; // etc...
答案 2 :(得分：10)
在活动的onCreate中，您可以
mScreenWidth = getActivity().getWindowManager().getDefaultDisplay().getWidth();
mScreenHeight = getActivity().getWindowManager().getDefaultDisplay().getHeight();
以后使用这些变量来访问设备的高度和宽度
答案 3 :(得分：3)
这就是获得可用屏幕尺寸的方法。这将不是原始像素大小，而是窗口/活动的可用空间。
Point outSize = new Point();
getWindowManager().getDefaultDisplay().getSize(outSize);
此外，您还可以为横向和纵向设置不同的布局xml文件。 将您的xml用于res / layout-port中的肖像。景观布局可以放入res / layout-land。你应该读懂android如何处理resources
答案 4 :(得分：2)
您可以使用“显示度量标准”类获取所有与显示相关的信息 http://developer.android.com/reference/android/util/DisplayMetrics.html
你需要
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
在此之后，您的指标对象中将显示所有必需的信息。
另一种选择是打电话
getActivity().getWindowManager().getDefaultDisplay().getWidth()
getActivity().getWindowManager().getDefaultDisplay().getHeight()
答案 5 :(得分：2)
我不会告诉你如何获得屏幕尺寸，因为其他人已经这样做了。我指的是android开发者开发指南中的link，它应该教你如何设计和开发不同屏幕尺寸的设备。
阅读后，请再次告诉我们您仍然想要获得屏幕的宽度和高度。