Android Activity活动页面跳转与页面传值

Intent intent = new Intent(MainActivity.this, TabHostActivity.class);
startActivity(intent);

Intent intent = new Intent("com.zqunyan.zgstudy.ACTION_START");
intent.addCategory("com.zqunyan.zgstudy.MY_CATEGORY");
startActivity(intent);

Intent intent = new Intent("com.zqunyan.zgstudy.ACTION_START");
startActivity(intent);

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("https://www.baidu.com"));
startActivity(intent);

Intent intent = new Intent(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:10086"));
startActivity(intent);

Intent intent = getPackageManager().getLaunchIntentForPackage("com.zqunyan.zgwidget");
if(intent != null){
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);
}

Intent intent = new Intent();
ComponentName componentName = new ComponentName("com.android.settings", "com.android.settings.Settings$DisplaySettingsActivity");
intent.setComponent(componentName);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

Intent intent = new Intent(MainActivity.this, ReturnValueActivity.class);
//第二个参数用于处理返回结果是判断是哪个语句调用的
startActivityForResult(intent, 1); //requestCode = 1

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent){
    super.onActivityResult(requestCode, resultCode, intent);
    if(requestCode == 1){
        if(resultCode == 1){
            String content = intent.getStringExtra("content");
            lblStatus.setText("success");
    	}else{
            lblStatus.setText("fail");
        }
    } 
}

Intent intent = new Intent();
intent.putExtra("content", txtMessage.getText().toString());
//setResult第一个参数为结果码，常用的有Activity.RESULT_OK、RESULT_CANCELED或者自定义整数型结果码
// 第二个参数为返回值，返回值封装在Intent中
setResult(1, intent); 
finish();

intent.putExtra("uname", "admin");

Intent intent = getIntent();
String name = intent.getStringExtra("uname")

Bundle bundle = new Bundle();
bundle.putString("NAME", "QY");
bundle.putInt("AGE", 18);
bundle.putDouble("TALL", 175.86);
bundle.putStringArrayList("lstFilePaths", lstFilePaths);
intent.putExtras(bundle);

Intent intent = this.getIntent();
Bundle bundle = intent.getExtras();
String strName = bundle.getString("NAME");
int intAge = bundle.getInt("AGE");
ArrayList<String> lstFilePaths = bundle.getStringArrayList("lstFilePaths");

public class GoodsInfoModule implements Serializable {}

bundle.putSerializable("goodsInfo", goodsInfo);

goodsInfo = (GoodsInfoModule) bundle.getSerializable("goodsInfo");