Android基础：代码中实现界面动态布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent" >

<TextView

android:id="@+id/top_tv"

android:layout_width="match_parent"

android:layout_height="30dp"

android:background="#ffffff"

android:gravity="center"

android:text="在代码中动态布局"

android:textColor="#7B68EE" />

<LinearLayout

android:id="@+id/child_layout"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_below="@id/top_tv"

android:orientation="vertical" >

</LinearLayout>

</RelativeLayout>

--------------------------------------------------------------

public class TestActivity extends Activity implements OnClickListener {

private LinearLayout childLinLayout;

private List<Map<String, String>> viewList = new ArrayList<Map<String, String>>();

private int[] colors = { R.color.Color1, R.color.Color2, R.color.Color3, R.Color.color4, R.color.Color5};

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.layout_main);

/**DisplayMetrics提供了一种关于显示的通用信息,如显示大小,分辨率和字体等*/

DisplayMetrics metrics = new DisplayMetrics();

/**获取屏幕分辨率及DisplayMetrics*/

getWindowManager().getDefaultDisplay().getMetrics(metrics);

/**设置两个宽度*/

int width1 = (metrics.widthPixels * 4 / 7);

int width2 = metrics.widthPixels * 3 / 7;

/**设置高度*/

int height = 80;

childLinLayout = (LinearLayout) findViewById(R.id.child_layout);

getListData();

for (int i = 0; i < viewList.size(); i++) {

/**动态设置布局*/

LinearLayout layout1 = new LinearLayout(this);

layout1.setOrientation(LinearLayout.HORIZONTAL);

layout1.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

int i1 = (i + 1) * 2 - 1;

int i2 = (i + 1) * 2;

TextView tv1 = new TextView(this);

tv1.setId(i1);

tv1.setOnClickListener(this);

tv1.setGravity(Gravity.CENTER_VERTICAL);

tv1.setText(viewList.get(i).get("left"));

TextView tv2 = new TextView(this);

tv2.setId(i2);

tv2.setOnClickListener(this);

tv2.setGravity(Gravity.CENTER_VERTICAL);

tv2.setText(viewList.get(i).get("right"));

if (i % 2 == 0) {

tv1.setWidth(width1);

tv1.setHeight(height);

tv1.setBackgroundResource(colors[0]);

tv2.setWidth(width2);

tv2.setHeight(height);

tv2.setBackgroundResource(colors[1]);

}

else {

tv1.setWidth(width2);

tv1.setHeight(height);

tv1.setBackgroundResource(colors[2]);

tv2.setWidth(width1);

tv2.setHeight(height);

tv2.setBackgroundResource(colors[4]);

}

layout1.addView(tv1);

layout1.addView(tv2);

childLinLayout.addView(layout1);

}

}

/**添加文字数据*/

private void getListData() {

for (int i = 0; i < 6; i++) {

Map<String, String> strMap = new HashMap<String, String>();

strMap.put("left", "这是左侧数据" + (i + 1) + "left");

strMap.put("right", "这是右侧数据" + (i + 1) + "right");

viewList.add(strMap);

}

}

@Override

public void onClick(View v) {

TextView tv = (TextView) findViewById(v.getId());

String content = tv.getText().toString();

switch (v.getId()) {

case 1:

showToastMsg(content);

break;

case 2:

showToastMsg(content);

break;

case 3:

showToastMsg(content);

break;

case 4:

showToastMsg(content);

break;

case 5:

showToastMsg(content);

break;

case 6:

showToastMsg(content);

break;

case 7:

showToastMsg(content);

break;

case 8:

showToastMsg(content);

break;

case 9:

showToastMsg(content);

break;

case 10:

showToastMsg(content);

break;

case 11:

showToastMsg(content);

break;

case 12:

showToastMsg(content);

break;

}

}

private void showToastMsg(String content) {

Toast.makeText(TestActivity.this, content + content, Toast.LENGTH_SHORT).show();

}

}

--------res/values/colors.xml-----------------------------

<?xml version="1.0" encoding="utf-8"?>

<resources>

<color name="Color1">#F0F0F0</color>

<color name="Color2">#D0D0D0</color>

<color name="Color3">#EC182E</color>

<color name="Color4">#C41e85</color>

<color name="Color5">#8B008B</color>

</resources>