Intent的简单使用

第一种：

Intent intent = new Intent(Forward.this, ForwardResult.class);
startActivity(intent);

第二种：

Intent intent = new Intent();
intent.setClass(Forward.this, ForwardResult.class);
startActivity(intent);

第三种：

Intent intent = new Intent();
ComponentName name = new ComponentName(getPackageName(),ForwardResult.class.getName());
intent.setComponent(name);
startActvity(intent);

存值：

Intent intent = new Intent();
//intent.putExtra(name,value);
intent.putExtra("username","huanpen");
intent.setClass(Forward.this, ForwardResult.class);
startActivity(intent);

取值：

Intent intent = getIntent();
intent.getStringExtra(name);
intent.getStringExtra("username");