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   源码介绍

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在指定的时间进入飞行模式，是一种免打扰不错的应用

package com.example.dsgj;




import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.content.ContentResolver;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.provider.Settings;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;  

public class MainActivity extends ActionBarActivity {
    private Button set;
    Handler handler=new Handler();  
    Runnable runnable=new Runnable() {  
        @Override  
        public void run() {  
            // TODO Auto-generated method stub  
            //要做的事情  
        	airplane();
        }  
    };  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (savedInstanceState == null) {
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.container, new PlaceholderFragment())
                    .commit();
        }
        
        set = (Button)findViewById(R.id.ok);  
        set.setOnClickListener(new Button.OnClickListener(){   
            @SuppressWarnings("deprecation")
			public void onClick(View v)  
            {  
            	EditText time_box = (EditText )findViewById(R.id.time);
              //  time_box.setText("30");
               final String time=time_box.getText().toString();
               int num= Integer.parseInt(time);
               num=num*1000*60;
               final int Time=num;
               final String text="手机将在" time "分钟后进入飞行模式！！";
            	handler.removeCallbacks(runnable);  
                //Toast提示控件
            	Toast.makeText(getApplicationContext(), text,
            		     Toast.LENGTH_SHORT).show(); 
            	handler.postDelayed(runnable, Time);//每两秒执行一次runnable. 
              
            		   
            }  
        });  
        
        
        
    }
    public void airplane()
    {
    	ContentResolver cr = getContentResolver();
        if(Settings.System.getString(cr,Settings.System.AIRPLANE_MODE_ON).equals("0")){
        	//获取当前飞行模式状态,返回的是String值0,或1.0为关闭飞行,1为开启飞行
        	//如果关闭飞行,则打开飞行
        	Settings.System.putString(cr,Settings.System.AIRPLANE_MODE_ON, "1");
        	Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
        	sendBroadcast(intent);
        }else{
        	//否则关闭飞行
        	Settings.System.putString(cr,Settings.System.AIRPLANE_MODE_ON, "0");
        	Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
        	sendBroadcast(intent);
        }
        handler.removeCallbacks(runnable);  
    
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.tuichu) {
        	this.finish();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    /**
     * A placeholder fragment containing a simple view.
     */
    public static class PlaceholderFragment extends Fragment {

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main, container, false);
            return rootView;
        }
    }

}