화면 가로, 세로 구하기(pixcel, dpi, inch)



MainActivity.java

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public class MainActivity extends AppCompatActivity {
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        //화면 가로, 세로 구하기(pixcel, dpi, inch)
 
        DecimalFormat df = new DecimalFormat("#,###");
        TextView txtPixcel = (TextView)findViewById(R.id.txtPixcel);
        txtPixcel.setText(df.format(getScreenWidth("pixcel"))+" X "+df.format(getScreenHeight("pixcel"))+"px");
        TextView txtDpi = (TextView)findViewById(R.id.txtDpi);
        txtDpi.setText(df.format(getScreenWidth("dpi"))+" X "+df.format(getScreenHeight("dpi"))+"dpi");
        TextView txtInch = (TextView)findViewById(R.id.txtInch);
        txtInch.setText(df.format(getScreenWidth("inch"))+" X "+df.format(getScreenHeight("inch"))+"inch");
    }
 
 
    //화면크기 - 가로
    public float getScreenWidth(String type){
        //DisplayMetrics 초기화
        DisplayMetrics displayMetrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
 
        if("pixcel".equalsIgnoreCase(type)){
            return displayMetrics.widthPixels;
        }
        else if("dpi".equalsIgnoreCase(type)){
            return displayMetrics.xdpi;
        }
        else if("inch".equalsIgnoreCase(type)){
            return displayMetrics.widthPixels/displayMetrics.xdpi;
        }
        return -1;
    }
    //화면크기 - 세로
    public float getScreenHeight(String type){
        //DisplayMetrics 초기화
        DisplayMetrics displayMetrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
 
        if("pixcel".equalsIgnoreCase(type)){
            return displayMetrics.heightPixels;
        }
        else if("dpi".equalsIgnoreCase(type)){
            return displayMetrics.ydpi;
        }
        else if("inch".equalsIgnoreCase(type)){
            return displayMetrics.heightPixels/displayMetrics.ydpi;
        }
        return -1;
    }
}
cs



activity_main.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:padding="16dp"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
 
    <LinearLayout
        android:paddingBottom="8dp"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:text="화면 가로, 세로 구하기(pixcel, dpi, inch)"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
 
    <LinearLayout
        android:paddingBottom="8dp"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:text="화면크기(pixcel) : "
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/txtPixcel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
 
    <LinearLayout
        android:paddingBottom="8dp"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:text="화면크기(dpi) : "
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/txtDpi"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
 
    <LinearLayout
        android:paddingBottom="8dp"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:text="화면크기(inch) : "
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/txtInch"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
 
</LinearLayout>
cs



결과


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