我想实现:点击button,动态生成 之前在xml里已经定义好的layout。
自己定义的已经定义好的xml文件: rizhi_pinglun.xml:
原来xml文件,就是 要把上面的xml插入这个布局中:rizhi_test.xml:
> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/rizhitest" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:background="#CAE1FF" > <TextView android:id="@+id/title" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/rizhi_title" android:text="xxx的日志" android:gravity="center" android:textColor="#454545" android:textSize="25sp" /> <TextView android:id="@+id/rizhi_title" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#FFC0CB" android:text="尘埃落定,栖于之间" android:gravity="center" android:textColor="#454545" android:textSize="25sp" android:layout_margin="5dp" /> <RelativeLayout android:id="@+id/touxiang_layout" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/rizhi_background_white" android:layout_margin="5dp" android:orientation="horizontal" > <ImageView android:id="@+id/touxiang" android:layout_width="50dp" android:layout_height="50dp" android:background="@drawable/touxiang" /> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="70dp" android:background="#FFC0CB" android:layout_marginTop="5dp" > <TextView android:id="@+id/username" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="阳光下的向日葵" android:textColor="#454545" android:textSize="15sp" /> <TextView android:id="@+id/rizhi_time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="2014年8月29日 12:45" android:textColor="#454545" android:textSize="15sp" android:layout_below="@id/username" android:layout_marginTop="3dp" /> </RelativeLayout> </RelativeLayout> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="按钮" /> </LinearLayout>
java文件:
private Context context; private Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.rizhi_test); context = this; button = (Button) findViewById(R.id.button); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { addMyView(); } }); }
private View addMyView(){ //(1) LayoutInflater inflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); //或LayoutInflater inflater = LayoutInflater.from(Activity.this); //或LayoutInflater inflater = getLayoutInflater(); //(2) View view = inflater.inflate(R.layout.rizhi_pinglun, null);//你要加入的布局 //(3) LayoutParams liaParams = new LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT); liaParams.setMargins(20, 10,20, 10);//设置了左右上下边距,可是无论用 rizhitest.addView(view,liaParams); //LinearLayout.LayoutParams.WRAP_CONTENT)); }
这儿,由于 原布局文件是LinearLayout。所以 动态生成的Layout都位于原来布局全部控件的下方。仅仅要点击button,就会生成新的layout,不会重叠。效果如图: 有个问题,假设原来的布局是RelativeLayout,能够解决边距问题。可是出现了一个问题,新生成的控件会覆盖掉原来生成的控件。给人的感觉是,仅仅生成一个控件。我也不知道为什么,欢迎大家提供好的建议。
RelativLayout xml文件: rizhi_test.xml:
private Context context; private Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.rizhi_test); context = this; button = (Button) findViewById(R.id.button); final View nView = addMyView(button); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { addMyView(nView); } }); }
private View addMyView(View xdView){ //(1) LayoutInflater inflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); //或LayoutInflater inflater = LayoutInflater.from(Activity.this); //或LayoutInflater inflater = getLayoutInflater(); //(2) View view = inflater.inflate(R.layout.rizhi_pinglun, null); //(3) RelativeLayout rizhitest = (RelativeLayout) findViewById(R.id.rizhitest); RelativeLayout.LayoutParams relParams = new LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT); relParams.setMargins(20, 10,20, 10); relParams.addRule(RelativeLayout.BELOW,xdView.getId()); rizhitest.addView(view,relParams); return view; }測试效果如图: