Android Open Source - WMLocation Location Activity

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From Project

Back to project page WMLocation.

License

The source code is released under:

Apache License

Java Source Code

/*
* Copyright (C) 2011 Mozgin Dmitry/* ww w .  j a va  2  s  .c  o  m*/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package m039.utils;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.TextView;
import android.text.method.ScrollingMovementMethod;
import android.app.TabActivity;
import android.widget.TabHost;
import android.text.InputFilter;
import android.util.Log;
import android.util.DisplayMetrics;
import android.util.TypedValue;

public class LocationActivity extends TabActivity {
    private Locator mLocator = null;

    private class MyHandler implements Handler.Callback {
  public boolean handleMessage (Message msg) {
      TextView tv = null;

      switch (msg.arg1) {
      case Locator.CHANGED_LOG:
    tv = (TextView) findViewById(R.id.log_tv);
    break;
      case Locator.CHANGED_STATUS:
    tv = (TextView) findViewById(R.id.status_tv);
    break;
      case Locator.CHANGED_LOCATION:
    tv = (TextView) findViewById(R.id.location_tv);
    break;
      default:
    return false;
      }

      tv.setText(mLocator.getChanges(msg.arg1));

      return true;
  }
    }

    // Taken from the SO
    private void autoScaleTextViewTextToHeight(TextView tv, String initialString, int requiredWidth) {
  String old = tv.getText().toString();

  tv.setText(initialString);

  float currentWidth = tv.getPaint().measureText(initialString);
  float phoneDensity = this.getResources().getDisplayMetrics().density;

  while(currentWidth > (requiredWidth * phoneDensity)) {
      tv.setTextSize(TypedValue.COMPLEX_UNIT_PX, tv.getTextSize() - 1.0f);
      currentWidth = tv.getPaint().measureText(initialString);
  }

  tv.setText(old);
    }


    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);

  TextView tv;

  tv = (TextView) findViewById(R.id.log_tv);
  tv.setMovementMethod(new ScrollingMovementMethod());

  tv = (TextView) findViewById(R.id.status_tv);
  tv.setMovementMethod(new ScrollingMovementMethod());

  tv = (TextView) findViewById(R.id.location_tv);
  tv.setMovementMethod(new ScrollingMovementMethod());

  TabHost th = getTabHost();
  th.addTab(th.newTabSpec("0").setIndicator("Location").setContent(R.id.location_tv));
  th.addTab(th.newTabSpec("1").setIndicator("GpsStatus").setContent(R.id.status_tv));
  th.addTab(th.newTabSpec("2").setIndicator("Log").setContent(R.id.log_tv));

  th.setCurrentTab(0);

  mLocator = new Locator(this, new Handler(new MyHandler()));
    }

    @Override
    public void onResume() {
  super.onResume();

  TextView tv;
  
  //
  // Recalculation of the text size
  //
  tv = (TextView) findViewById(R.id.status_tv);
  autoScaleTextViewTextToHeight(tv,
              "  # | Azimuth | Elevation |  PRN |    SNR\n",
              getWindowManager().getDefaultDisplay().getWidth());

  tv = (TextView) findViewById(R.id.log_tv);
  autoScaleTextViewTextToHeight(tv,
              "requestLocationUpdates\t| minTime = " + 3000 + " minDistance = " + 0f + "\n",
              getWindowManager().getDefaultDisplay().getWidth());
  
  mLocator.start();
    }

    @Override
    public void onPause() {
  super.onPause();
  mLocator.stop();
    }
}

Java Source Code List

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