android FlexboxLayout可伸缩布局

1、app添加依赖

 //响应式伸缩性布局    implementation 'com.google.android:flexbox:0.2.2'

2、MainActivity

public class MainActivity extends AppCompatActivity {private FlexboxLayout flexboxLayout;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_flow);        String[] tags = {"婚姻育儿", "散文", "设计", "上班这点事儿", "影视天堂", "大学生活", "美人说", "运动和健身", "工具癖", "生活家", "程序员", "想法", "短篇小说", "美食", "教育", "心理", "奇思妙想", "美食", "摄影"};        flexboxLayout = (FlexboxLayout) findViewById(R.id.flexbox_layout);        for (int i = 0; i < tags.length; i++) {            Book model = new Book();            model.setId(i);            model.setName(tags[i]);            flexboxLayout.addView(createNewFlexItemTextView(model));        }    }/** * 动态创建TextView * @param book * @return */private TextView createNewFlexItemTextView(final Book book) {    TextView textView = new TextView(this);    textView.setGravity(Gravity.CENTER);    textView.setText(book.getName());    textView.setTextSize(12);    textView.setTextColor(getResources().getColor(colorAccent));    //textView.setBackgroundResource(R.drawable.aa);    textView.setTag(book.getId());    textView.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View view) {            Log.e("fenxi", book.getName());            view.setBackgroundColor(getResources().getColor(colorPrimary));        }    });    int padding = Util.dpToPixel(this, 4);    int paddingLeftAndRight = Util.dpToPixel(this, 8);    ViewCompat.setPaddingRelative(textView, paddingLeftAndRight, padding, paddingLeftAndRight, padding);    FlexboxLayout.LayoutParams layoutParams = new FlexboxLayout.LayoutParams(            ViewGroup.LayoutParams.WRAP_CONTENT,            ViewGroup.LayoutParams.WRAP_CONTENT);    int margin = Util.dpToPixel(this, 6);    int marginTop = Util.dpToPixel(this, 16);    layoutParams.setMargins(margin, marginTop, margin, 0);    textView.setLayoutParams(layoutParams);    return textView;}}

3、工具类Util

public class Util {    public static int pixelToDp(Context context, int pixel) {        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();        return pixel < 0 ? pixel : Math.round(pixel / displayMetrics.density);    }    public static int dpToPixel(Context context, int dp) {        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();        return dp < 0 ? dp : Math.round(dp * displayMetrics.density);    }}

4、实体类Book

public class Book {    private int id;    private String name;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public Book() {    }}

5、XML

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

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