Android五种布局示例

package lab.sodino.layoutdemo; import android.app.Activity; import android.util.Log; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; public class LayoutDemoAct extends Activity implements OnClickListener { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // Set up click listeners for all the buttons View linearView = findViewById(R.id.linearBtn); linearView.setOnClickListener(this); View tableView = findViewById(R.id.tableBtn); tableView.setOnClickListener(this); View frameView = findViewById(R.id.frameBtn); frameView.setOnClickListener(this); View absoluteView = findViewById(R.id.absoluteBtn); absoluteView.setOnClickListener(this); View relativeView = findViewById(R.id.relativeBtn); relativeView.setOnClickListener(this); } public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.menu, menu); Log.d("Sodino", "Inflate menu item"); return true; } public void onClick(View v) { //点击按钮进入不同的布局界面 if (v.getId() == R.id.linearBtn) { //进入linearLayout界面 setContentView(R.layout.linearlayoutdemo); } else if (v.getId() == R.id.tableBtn) { setContentView(R.layout.tablelayoutdemo); } else if (v.getId() == R.id.frameBtn) { setContentView(R.layout.framelayoutdemo); } else if (v.getId() == R.id.absoluteBtn) { setContentView(R.layout.absolutelayoutdemo); } else if (v.getId() == R.id.relativeBtn) { setContentView(R.layout.relativelayoutdemo); } } public boolean onOptionsItemSelected(MenuItem item) { // super.onOptionsItemSelected(item); if (item.getItemId() == R.id.backMenu) { setContentView(R.layout.main); //返回 主界面 后，如果没有再设置监听 //则再次返回主界面时点击相应的按钮无效 View linearView = findViewById(R.id.linearBtn); linearView.setOnClickListener(this); View tableView = findViewById(R.id.tableBtn); tableView.setOnClickListener(this); View frameView = findViewById(R.id.frameBtn); frameView.setOnClickListener(this); View absoluteView = findViewById(R.id.absoluteBtn); absoluteView.setOnClickListener(this); View relativeView = findViewById(R.id.relativeBtn); relativeView.setOnClickListener(this); return true; } return false; } }