Detecting device density, Screen-type and aspect-ratio dynamically in Android
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import android.app.Activity; import android.content.res.Configuration; import android.os.Bundle; import android.util.DisplayMetrics; import android.util.Log; public class MainActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } @Override public void onStart() { super.onStart(); try { checkDensity(); } catch (Exception e) { e.printStackTrace(); } try { checkSize(); } catch (Exception e) { e.printStackTrace(); } try { checkAspectRatio(); } catch (Exception e) { e.printStackTrace(); } } public void checkDensity() { // reading the device density values DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(metrics); String screen_density = Integer.toString(metrics.densityDpi); String logical_density = Float.toString(metrics.density); } public void checkSize() { Configuration myConfig = new Configuration(); myConfig.setToDefaults(); myConfig = getResources().getConfiguration(); // Tests that the screen size category (small, med, large) is set switch (myConfig.screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) { case Configuration.SCREENLAYOUT_SIZE_LARGE: { break; } case Configuration.SCREENLAYOUT_SIZE_NORMAL: { break; } case Configuration.SCREENLAYOUT_SIZE_SMALL: { break; } case Configuration.SCREENLAYOUT_SIZE_UNDEFINED: { break; } } } public void checkAspectRatio() { Configuration myConfig = new Configuration(); myConfig.setToDefaults(); myConfig = getResources().getConfiguration(); // Tests the screen aspect ratio switch (myConfig.screenLayout & Configuration.SCREENLAYOUT_LONG_MASK) { case Configuration.SCREENLAYOUT_LONG_NO: { break; } case Configuration.SCREENLAYOUT_LONG_YES: { break; } case Configuration.SCREENLAYOUT_LONG_UNDEFINED: { break; } } } } |
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