Android Open Source - LockScreen Main Activity

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License

The source code is released under:

Apache License

Java Source Code

package com.github.pongdang.lockscreentest;
/*w w  w . j av a 2s.  co m*/

import android.app.Activity;
import android.app.KeyguardManager;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.os.PowerManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;

@SuppressWarnings("deprecation")
public class MainActivity extends Activity implements OnClickListener{
  
  KeyguardManager km = null;
  KeyguardManager.KeyguardLock keyLock = null;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    if(km == null)
      km = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
    
    if(keyLock == null)
      keyLock = km.newKeyguardLock(Context.KEYGUARD_SERVICE);
    
    
    SQLiteDatabase db = new DBHelper(this).getWritableDatabase();
    
    if(getSharedPreferences("pref1", MODE_PRIVATE).getBoolean("isFirstExecuted", true))
      db.execSQL("INSERT INTO lock VALUES ("+0+" );"); //custom Off
    
    db.close();
    
    setActivityOrder();
    
    ((Button) findViewById(R.id.btn_on)).setOnClickListener(this);
    ((Button) findViewById(R.id.btn_off)).setOnClickListener(this);
  }

  @Override
  public void onClick(View v) {
    Intent intent = new Intent(this, ScreenService.class);
    
    SQLiteDatabase db = new DBHelper(this).getWritableDatabase();
    
    switch (v.getId()) {
    case R.id.btn_on:
      startService(intent);
      Toast.makeText(this, "On", Toast.LENGTH_SHORT).show();
      db.execSQL("UPDATE lock SET custom = "+1+";");
      break;

    case R.id.btn_off:
      stopService(intent);
      Toast.makeText(this, "Off", Toast.LENGTH_SHORT).show();
      db.execSQL("UPDATE lock SET custom = "+0+";");
      break;
    }
    
    db.close();
  }
  
  void setActivityOrder() {
    PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    if(!pm.isScreenOn()) {
      
      SQLiteDatabase db = new DBHelper(getApplicationContext()).getReadableDatabase();
      
      Cursor c = db.rawQuery("SELECT custom FROM lock", null);
      
      while(c.moveToNext()) {
        
        switch (c.getInt(0)) {
        case 0:
          getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED|WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
          Toast.makeText(this, "Custom : "+c.getInt(0), Toast.LENGTH_SHORT).show();
          break;

        case 1:
          getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED|WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
          Toast.makeText(this, "Custom : "+c.getInt(0), Toast.LENGTH_SHORT).show();
          break;
        }
      }
      
      db.close();
    }
  }
  
  @Override
  protected void onPause() {
    setActivityOrder();
    super.onPause();
  };
  
  //Home Button ??? ??
  @Override
  protected void onUserLeaveHint() {
    finish();
    super.onUserLeaveHint();
  }
  
  @Override
  protected void onResume() {
    super.onResume();
    
    SharedPreferences.Editor edit = getSharedPreferences("pref1", MODE_PRIVATE).edit();
    edit.putBoolean("isFirstExecuted", false);
    edit.commit();
  }
}

Java Source Code List

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