先上圖

DA951D77A7DAD8936FEF16A2EE3B76E6.jpg

自定義一個group

public class AutoBreakViewGroup extends ViewGroup {

private int mScreenWidth;

private int mHorizontalSpacing;

private int mVerticalSpacing;

public AutoBreakViewGroup(Context context) {

super(context);

init();

}

public AutoBreakViewGroup(Context context, AttributeSet attrs) {

super(context, attrs);

init();

}

public void setSpacing(int horizontalSpacing, int verticalSpacing) {

mHorizontalSpacing = horizontalSpacing;

mVerticalSpacing = verticalSpacing;

}

private void init() {

DisplayMetrics dm = getResources().getDisplayMetrics();

mScreenWidth = dm.widthPixels;

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

int widthSize = MeasureSpec.getSize(widthMeasureSpec);

int heightSize = MeasureSpec.getSize(heightMeasureSpec);

measureChildren(widthMeasureSpec, heightMeasureSpec);

setMeasuredDimension(widthSize, heightSize);

}

@Override

protected void onLayout(boolean changed, int l, int t, int r, int b) {

int mTotalHeight = 0;

int mTotalWidth = 0;

int mTempHeight = 0;

int childCount = getChildCount();

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

View childView = getChildAt(i);

int measureHeight = childView.getMeasuredHeight();

int measuredWidth = childView.getMeasuredWidth();

mTempHeight = (measureHeight > mTempHeight) ? measureHeight : mTempHeight;

if ((measuredWidth + mTotalWidth + mHorizontalSpacing) > mScreenWidth) {

mTotalWidth = 0;

mTotalHeight += (mTempHeight + mVerticalSpacing);

mTempHeight = 0;

}

childView.layout(mTotalWidth + mHorizontalSpacing, mTotalHeight, measuredWidth + mTotalWidth + mHorizontalSpacing, mTotalHeight + measureHeight);

mTotalWidth += (measuredWidth + mHorizontalSpacing);

}

}

}

activity調用

public class MainActivity extends AppCompatActivity {

private ArrayList mData = new ArrayList<>();

private Context mContext;

private AutoBreakViewGroup autoBreakViewGroup;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

mContext = this;

setContentView(R.layout.activity_main);

autoBreakViewGroup = (AutoBreakViewGroup) findViewById(R.id.autoBreakViewGroup);

autoBreakViewGroup.setSpacing(35, 35);

initView();

}

private void initView() {

mData.add("周瑩少奶奶");

mData.add("吳蔚文");

mData.add("王世均守候一生");

mData.add("杜明禮是個公公");

mData.add("胡詠梅");

mData.add("吳聘少爺");

mData.add("圖爾丹Mexico");

mData.add("沈星移");

mData.add("千紅小姐");

mData.add("趙白石克己復禮");

mData.add("周老四賣藝的");

mData.add("沈四海");

mData.add("吳漪嫁給了趙白石");

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

TextView textView = new TextView(mContext);

textView.setText(mData.get(i));

textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16);

textView.setTextColor(getResources().getColor(R.color.colorPrimary));

textView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));

textView.setBackgroundResource(R.drawable.item_bg);

textView.setPadding(40, 10, 40, 10);

textView.setGravity(Gravity.CENTER);

autoBreakViewGroup.addView(textView);

}

}

xml

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

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context="com.wawi.AutoBreakViewGroup.MainActivity">

android:id="@+id/autoBreakViewGroup"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="20dp"/>

shape

android:width="1dp"

android:color="@color/colorPrimary" />

android:bottom="5dp"

android:left="12dp"

android:right="12dp"

android:top="5dp" />

總結

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