Intent实现页间面跳转

青旅半醒 2022-08-22 06:28 189阅读 0赞

package com.example.demon1;
    
    import android.app.Activity;
    import android.content.Intent;
    import android.os.Bundle;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.TextView;
    
    public class Firstactivity extends Activity {
    
    	private Button button1;
    	private Button button2;
    	private TextView tv;
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_firstactivity);
    		button1=(Button)findViewById(R.id.button1);
    		tv=(TextView) findViewById(R.id.textView1);
    		button2=(Button) findViewById(R.id.button2);
    		//无返回值的页面跳转
    		button1.setOnClickListener(new OnClickListener() {
    			
    			@Override
    			public void onClick(View v) {
    				// TODO Auto-generated method stub
    				Intent intent=new Intent(Firstactivity.this,Secondactivity.class);
    				startActivity(intent);
    			}
    		});
    		//有返回值的页面跳转
    		button2.setOnClickListener(new OnClickListener() {
    			
    			@Override
    			public void onClick(View v) {
    				// TODO Auto-generated method stub
    				Intent intent=new Intent(Firstactivity.this,Secondactivity.class);
    				startActivityForResult(intent, 1);
    			}
    		});
    	}
    	
    	//有返回值的页面跳转
    	@Override
    	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    		// TODO Auto-generated method stub
    		super.onActivityResult(requestCode, resultCode, data);//requestCode请求的标志resultCode第二个页面返回的标志
    		if(requestCode==1&&resultCode==2){
    			String content=data.getStringExtra("data");//data第二个页面回传的数据
    			tv.setText(content);
    		}
    	}
    
    	@Override
    	public boolean onCreateOptionsMenu(Menu menu) {
    		// Inflate the menu; this adds items to the action bar if it is present.
    		getMenuInflater().inflate(R.menu.firstactivity, 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.action_settings) {
    			return true;
    		}
    		return super.onOptionsItemSelected(item);
    	}
    }