搜索页

开发中经常需要为用户提供一个单独的搜索页面，这里做一下记录。

先贴上最终的效果：

1.输入框背景，通过定义drawable实现：

<!--bg_et_search.xml-->
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/white" />
    <corners android:radius="8dp" />
</shape>

2.布局文件：

<!-- title_bar_search.xml-->
<?xml version="1.0" encoding="utf-8"?>
<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="?attr/actionBarSize"
    android:background="@color/colorPrimary">

    <EditText
        android:id="@+id/title_bar_search_et"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginBottom="8dp"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="65dp"
        android:layout_marginTop="8dp"
        android:background="@drawable/bg_et_search"
        android:gravity="center_vertical"
        android:hint="请输入关键字"
        android:paddingLeft="10dp"
        android:singleLine="true"
        android:textSize="14sp" />

    <ImageView
        android:id="@+id/title_bar_iv_clear"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:layout_marginRight="75dp"
        android:padding="5dp"
        android:src="@android:drawable/ic_delete"
        android:visibility="gone" />

    <TextView
        android:id="@+id/title_bar_right_text"
        android:layout_width="60dp"
        android:layout_height="match_parent"
        android:layout_alignParentRight="true"
        android:clickable="true"
        android:gravity="center"
        android:text="取消"
        android:textColor="@color/colorTitleText"
        android:textSize="16sp"
        android:visibility="visible" />

</RelativeLayout>

3.代码

public class SearchActivity extends BaseActivity implements TextWatcher, TextView.OnEditorActionListener {
    private static final String TAG = SearchActivity.class.getSimpleName();
    private EditText mEditTextSearch;
    private TextView mTextViewDoSearch;
    private ImageView mImageViewClear;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mEditTextSearch.addTextChangedListener(this);
        mEditTextSearch.setOnEditorActionListener(this);
        mTextViewDoSearch.setOnClickListener(this);
        mImageViewClear.setOnClickListener(this);
        mEditTextSearch.setInputType(InputType.TYPE_CLASS_NUMBER);
    }

    @Override
    public void initView() {
        setContentView(R.layout.activity_search_bed);
        mEditTextSearch = (EditText) findViewById(R.id.title_bar_search_et);
        mTextViewDoSearch = (TextView) findViewById(R.id.title_bar_right_text);
        mImageViewClear = (ImageView) findViewById(R.id.title_bar_iv_clear);
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        Log.d(TAG, "beforeTextChanged()  s==" + s);
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        Log.d(TAG, "onTextChanged() s==" + s);
    }

    @Override
    public void afterTextChanged(Editable s) {
        Log.d(TAG, "afterTextChanged() s==" + s);
        String content = s.toString().trim();

        if (TextUtils.isEmpty(content)) {
            mTextViewDoSearch.setText("取消");
            mImageViewClear.setVisibility(View.GONE);
        } else {
            mTextViewDoSearch.setText("搜索");
            mImageViewClear.setVisibility(View.VISIBLE);
        }
    }

    @Override
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
        Log.d(TAG, "onEditorAction() content==" + v.getText());
        return false;
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.title_bar_right_text:
                if ("取消".equals(((TextView) v).getText().toString())) {
                    onBackPressed();
                } else {
                    //搜索操作
                }
                break;
            case R.id.title_bar_iv_clear:
                mEditTextSearch.setText("");
                break;
        }
        super.onClick(v);
    }
}