Android 伸缩搜索框

1.首先写入布局

2.背景设置

3.主页面代码

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private ImageView search_image;
    private EditText search_edname;
    private TextView search_textName;
    private RelativeLayout search_linear;
    private AutoTransition transition;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }

    private void initView() {
        search_image = (ImageView) findViewById(R.id.search_image);
        search_edname = (EditText) findViewById(R.id.search_edname);
        search_textName = (TextView) findViewById(R.id.search_textName);
        search_linear = (RelativeLayout) findViewById(R.id.search_linear);
        //点击事件
        search_image.setOnClickListener(this);
        search_textName.setOnClickListener(this);

    }


    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.search_image:
                //点击搜索 伸展
                initExpand();
                break;
            case R.id.search_textName:
                //点击text收缩
                initReduce();
                break;
        }
    }


    /*设置伸展状态时的布局*/
    public void initExpand() {
        search_edname.setHint("CGV影城");
        search_edname.requestFocus();
        search_edname.setHintTextColor(Color.WHITE);
        search_textName.setText("搜索");
        search_textName.setVisibility(View.VISIBLE);
        search_edname.setVisibility(View.VISIBLE);
        LinearLayout.LayoutParams LayoutParams = (LinearLayout.LayoutParams) search_linear.getLayoutParams();
        LayoutParams.width = dip2px(170);
        LayoutParams.setMargins(dip2px(0), dip2px(0), dip2px(0), dip2px(0));
        search_linear.setLayoutParams(LayoutParams);
        search_edname.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                search_edname.setFocusable(true);
                search_edname.setFocusableInTouchMode(true);
                return false;
            }
        });
        //开始动画
        beginDelayedTransition(search_linear);

    }

    /*设置收缩状态时的布局*/
    private void initReduce() {
        search_edname.setCursorVisible(false);
        search_edname.setVisibility(View.GONE);
        search_textName.setVisibility(View.GONE);
        LinearLayout.LayoutParams LayoutParams = (LinearLayout.LayoutParams) search_linear.getLayoutParams();
        LayoutParams.width = dip2px(40);
        LayoutParams.setMargins(dip2px(0), dip2px(0), dip2px(0), dip2px(0));
        search_linear.setLayoutParams(LayoutParams);

        //隐藏键盘
        InputMethodManager imm = (InputMethodManager) this.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(this.getWindow().getDecorView().getWindowToken(), 0);
        search_edname.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                search_edname.setCursorVisible(true);
            }
        });
        //开始动画
        beginDelayedTransition(search_linear);
    }


    @TargetApi(Build.VERSION_CODES.KITKAT)
    private void beginDelayedTransition(ViewGroup view) {
        transition = new AutoTransition();
        transition.setDuration(500);
        TransitionManager.beginDelayedTransition(view, transition);
    }

    private int dip2px(float dpVale) {
        final float scale = getResources().getDisplayMetrics().density;
        return (int) (dpVale * scale + 0.5f);
    }
}