Android 跳转Activity并通过Bundle对象传递数据

1）Activity1 (MainActivity)

package com.example.androidtestproject;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.widget.*;import android.view.View;import android.content.Intent;public class MainActivity extends Activity {private EditText UsernameTextEdit=null;private EditText PasswordTextEdit=null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button loginButton=(Button)findViewById(R.id.loginButton);UsernameTextEdit=(EditText)findViewById(R.id.UsernameEditText);PasswordTextEdit=(EditText)findViewById(R.id.PasswordeEditText);loginButton.setOnClickListener(new Button.OnClickListener(){public void onClick(View view){String username=UsernameTextEdit.getText().toString();String password=PasswordTextEdit.getText().toString();/*new 一个Intent对象，并制定要启动的class*/Intent intent=new Intent();intent.setClass(MainActivity.this, TestActivity.class);/*new 一个Bundle对象，并将要传递的数据传入*/Bundle bundle=new Bundle();bundle.putString("username", username);bundle.putString("password",password);/*将Bundle对象assign给Intent*/intent.putExtras(bundle);/*调用一个新的Activity*/startActivity(intent);/*关闭原来的Activity*/MainActivity.this.finish();}});}@Overridepublic 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;}}

2）Activity2 (TestActivity)

package com.example.androidtestproject;import android.app.Activity;import android.os.Bundle;import android.widget.*;public class TestActivity extends Activity {/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);      setContentView(R.layout.activity_test);   TextView UsernameTextView=(TextView)findViewById(R.id.TestUsernameTextView);   TextView PasswordTextView=(TextView)findViewById(R.id.TestPasswordTextView);      /*获取Intent中的Bundle对象*/   Bundle bundle=this.getIntent().getExtras();      /*获取Bundle对象中的数据*/   String username=bundle.getString("username");   String password=bundle.getString("password");      /*将数据和控件绑定*/   UsernameTextView.setText(username);   PasswordTextView.setText(password);}}

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