通过sharedpreference两个程序共享数据

一、整体工程图

    

二、SharePreferenceWriteActivity.java

 

package org.ourunix.android.sharepreferencewrite;



import android.app.Activity;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;



public class SharePreferenceWriteActivity extends Activity implements OnClickListener{

	private SharedPreferences prference;

	private String PREF_NAME = "PREF_NAME";

	private String KEY = "TestValue";

	private EditText mEditText;

	private Button mButton;

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        mEditText = (EditText) findViewById(R.id.writeTV);

        mButton = (Button) findViewById(R.id.submit);

        mButton.setOnClickListener(this);

    }

    

	@Override

	public void onClick(View v) {

		// TODO Auto-generated method stub

		

		prference = getSharedPreferences(PREF_NAME, MODE_WORLD_READABLE );

        prference.edit().putString(KEY, mEditText.getText().toString()).commit();

	}

}

三、SharePreferenceReadActivity.java

 

package org.ourunix.sharepreferenceread;



import android.app.Activity;

import android.content.Context;

import android.content.SharedPreferences;

import android.content.pm.PackageManager.NameNotFoundException;

import android.os.Bundle;

import android.widget.TextView;



public class SharePreferenceReadActivity extends Activity {

    /** Called when the activity is first created. */

	private SharedPreferences prference;

	private String NAME = "PREF_NAME";

	private String KEY = "TestValue";

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        TextView tv = new TextView(this);

        setContentView(tv);

        

        String tmp;

        Context c = null;

        

        try {

			c = this.createPackageContext("org.ourunix.android.sharepreferencewrite", CONTEXT_IGNORE_SECURITY);



		} catch (NameNotFoundException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}	

		

        if (c != null)

        prference = c.getSharedPreferences(NAME, 0);

        tmp = prference.getString(KEY, "nothing");

        tv.setText(tmp);

    }

}