Question

在我第一次尝试以编程方式创建layout时，我创建了下面发布的first-xml文件，我想以编程方式将其附加到下面发布的第二个xml文件中。我还提到了this tutorial，但似乎以编程方式创建linearlayout和relativelayout是不同的。同样在我尝试创建relativelayout eclipse时用红色波浪线强调我的layoutparams加上，我不知道参数是否先设置是宽度还是高度。请提供建议并提供建议。

我的尝试：

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_layout_programmatically_00);

    RelativeLayout mRelLayout00 = new RelativeLayout(this);
    android.view.ViewGroup.LayoutParams mRelLayoutParams = new  
            LayoutParams(android.view.ViewGroup.LayoutParams.WRAP_CONTENT
            , android.view.ViewGroup.LayoutParams.WRAP_CONTENT);

首先-XML：

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content" 
android:layout_width="match_parent">

      <LinearLayout 
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"
          android:orientation="vertical">
      </LinearLayout>

second-xml＆＃34;我希望以编程方式实现＆＃34;：

<RelativeLayout 
              android:id="@+id/RelativeLayout01"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_gravity="top|center_horizontal">
              <TextView
                  android:id="@+id/TextView01"
                  android:layout_height="wrap_content"
                  android:text="@string/menu"
                  android:textSize="@dimen/titlesTextSize"
                  android:layout_marginLeft="18dp"
                  android:shadowDx="0"
                  android:shadowDy="0"
                  android:shadowRadius="10"
                  android:layout_width="wrap_content"
                  android:shadowColor="@android:color/white"
                  android:textColor="@color/titleColor">
              </TextView>    
          </RelativeLayout>

Answer 1

尝试以下方法。我没有测试过。如果您有任何问题，请告诉我。

定义像这样的样式

<style name="MyStyleText">
    <item name="android:textColor">#ff0000</item>
    <item name="android:textSize">12sp</item>
    <item name="android:shadowColor">#ffffff</item>
    <item name="android:shadowDx">0</item>
    <item name="android:shadowDy">0</item>
    <item name="android:shadowRadius">10</item>
  </style>

在java文件中

RelativeLayout.LayoutParams lp ;
    lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);


RelativeLayout.LayoutParams textLP ;
    textLP = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

RelativeLayout rl = new RelativeLayout(this);


TextView tv = new TextView(this);
tv.setText(getString(R.string.hello_world));
tv.setTextAppearance(getApplicationContext(), R.style.MyStyleText);

rl.addView(tv, textLP);
this.addContentView(rl, lp);

Answer 2

// try this way,hope this will help you...

**activity_main.xml**

<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="match_parent"
    android:layout_width="match_parent">

    <LinearLayout
        android:id="@+id/lnrMain"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
    </LinearLayout>
</FrameLayout>

**MainActivity.java**

public class MainActivity extends Activity{

    private LinearLayout lnrMain;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        lnrMain = (LinearLayout) findViewById(R.id.lnrMain);

        RelativeLayout mRelLayout00 = new RelativeLayout(this);
        RelativeLayout.LayoutParams mRelLayoutParams = new
                RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        mRelLayout00.setLayoutParams(mRelLayoutParams);
        TextView textView = new TextView(this);
        RelativeLayout.LayoutParams textParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        textParams.setMargins(18,0,0,0);
        textView.setLayoutParams(textParams);
        textView.setTextSize(16);
        textView.setShadowLayer(10,0,0,android.R.color.white);
        textView.setText("menu");
        mRelLayout00.addView(textView);
        lnrMain.addView(mRelLayout00);
    }
}

Answer 3

LinearLayout ll = (LinearLayout)findViewById(R.id.my_linearlayout_in_first_xml);

View view = View.inflate(this, R.layout.second_xml, null);

ll.addView(view);

以编程方式创建relativeLayout？

3 个答案: