TextView

• 文字大小凡涩、顏色
• 顯示不下使用...
• 文字加+icon
• 下劃線棒搜、刪除線
• 跑馬燈

效果圖

TextView效果圖

代碼

activity_text_view.xml 文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="20dp">

    <TextView
        android:id="@+id/tv_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/tv_test1"
        android:textColor="#000000"
        android:textSize="24sp"
        />

    <TextView
        android:id="@+id/tv_2"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:text="@string/tv_test1"
        android:textColor="#000000"
        android:textSize="24sp"
        android:maxLines="1"
        android:ellipsize="end"
        android:layout_marginTop="10dp"
        />

    <TextView
        android:id="@+id/tv_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="篩選"
        android:textColor="#000000"
        android:textSize="24sp"
        android:layout_marginTop="10dp"
        android:drawableRight="@drawable/arrowdown"
        android:drawablePadding="8dp"
        />

    <TextView
        android:id="@+id/tv_4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/tv_test1"
        android:textColor="#000000"
        android:textSize="24sp"
        />

    <TextView
        android:id="@+id/tv_5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/tv_test1"
        android:textColor="#000000"
        android:textSize="24sp"
        />

    <TextView
        android:id="@+id/tv_6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#000000"
        android:textSize="24sp"
        />

    <TextView
        android:id="@+id/tv_7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#000000"
        android:text="asdfsdf asdlfjlasjdf asdlfasld asdfj sdlfjlsajd fasdfj asdfsdf f"
        android:textSize="24sp"
        android:ellipsize="marquee"
        android:singleLine="true"
        android:marqueeRepeatLimit="marquee_forever"
        android:focusable="true"
        android:focusableInTouchMode="true"
        />
</LinearLayout>

TextViewActivity文件

private TextView mTv4,mTv5,mTv6;

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

        mTv4 = findViewById(R.id.tv_4);
        mTv4.getPaint().setFlags(Paint.STRIKE_THRU_TEXT_FLAG);// 中劃線
        mTv4.getPaint().setAntiAlias(true); // 去除鋸齒

        mTv5 = findViewById(R.id.tv_5);
        mTv5.getPaint().setFlags(Paint.UNDERLINE_TEXT_FLAG);// 中劃線
        mTv5.getPaint().setAntiAlias(true); // 去除鋸齒


        mTv6 = findViewById(R.id.tv_6);
        mTv6.setText(Html.fromHtml("<u>天哥在奔跑</u>"));
    }

Button

• 文字大小顏色
• 背景形狀
• 按壓效果
• 點(diǎn)擊事件

效果圖

Button效果圖

代碼

布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp">

    <Button
        android:id="@+id/btn_1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="按鈕1"
        android:textSize="20sp"
        android:textColor="#F44336"
        android:background="#CDDC39"
        />

    <Button
        android:id="@+id/btn_2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="按鈕2"
        android:textSize="20sp"
        android:textColor="#F44336"
        android:background="@drawable/bg_btn2"
        android:layout_below="@id/btn_1"
        android:layout_marginTop="20dp"
        />

    <Button
        android:id="@+id/btn_3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="按鈕3"
        android:textSize="20sp"
        android:textColor="#F44336"
        android:background="@drawable/bg_btn3"
        android:layout_below="@id/btn_2"
        android:layout_marginTop="20dp"
        />

    <Button
        android:id="@+id/btn_4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="按鈕4"
        android:textSize="20sp"
        android:textColor="#F44336"
        android:background="@drawable/bg_btn4"
        android:layout_below="@id/btn_3"
        android:layout_marginTop="20dp"
        android:onClick="showToast"
        />

    <TextView
        android:id="@+id/tv_1"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_below="@id/btn_4"
        android:layout_marginTop="20dp"
        android:textColor="#000"
        android:text="文字1"
        android:textSize="22sp"
        android:background="#FFA"
        android:gravity="center"
        />

</RelativeLayout>

背景效果

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <solid
        android:color="#FFC107"/>
    <corners
        android:radius="10dp"/>

</shape>

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <stroke
        android:width="1dp"
        android:color="#FFC107"
        />
    <corners
        android:radius="10dp"/>

</shape>

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

    <item android:state_pressed="true">
        <shape>
            <solid android:color="#9C640B"/>
            <corners android:radius="5dp"/>
        </shape>
    </item>

    <item android:state_pressed="false">
        <shape>
            <solid android:color="#FF9900"/>
            <corners android:radius="5dp"/>
        </shape>
    </item>

</selector>

ButtonActivity

public class ButtonActivity extends AppCompatActivity {

    private Button btn3;
    private TextView tV1;

    @SuppressLint("WrongViewCast")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_button);

        btn3 = findViewById(R.id.btn_3);
        btn3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(ButtonActivity.this,"btn3被點(diǎn)擊了",Toast.LENGTH_SHORT).show();
            }
        });

        tV1 = findViewById(R.id.tv_1);
        tV1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(ButtonActivity.this,"view1被點(diǎn)擊了",Toast.LENGTH_SHORT).show();
            }
        });
    }

    public void showToast(View view) {
        Toast.makeText(this,"btn4被點(diǎn)擊了",Toast.LENGTH_SHORT).show();
    }
}

EditText

• 常用屬性
• 監(jiān)聽事件
• 制作登錄頁面

效果圖

登錄界面

代碼

activity_edit_text.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp">

    <EditText
        android:id="@+id/et_1"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:textSize="16dp"
        android:textColor="#FFC107"
        android:hint="用戶名"
        android:background="@drawable/bg_username"
        android:paddingLeft="8dp"
        android:paddingRight="8dp"
        android:drawableLeft="@drawable/user"
        android:drawablePadding="5dp"
        android:maxLines="1"
        />
    <!--android:inputType="number"-->

    <EditText
        android:id="@+id/et_2"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:textSize="16dp"
        android:textColor="#FFC107"
        android:hint="密碼"
        android:layout_below="@id/et_1"
        android:inputType="textPassword"
        android:background="@drawable/bg_username"
        android:layout_marginTop="20dp"
        android:paddingLeft="8dp"
        android:paddingRight="8dp"
        android:drawableLeft="@drawable/password"
        android:drawablePadding="5dp"
        android:maxLines="1"
        />

    <Button
        android:id="@+id/btn_login"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_below="@id/et_2"
        android:layout_marginTop="40dp"
        android:background="@drawable/bg_btn4"
        android:text="登錄"
        android:textColor="#fff"
        android:textSize="20sp"
        />
</RelativeLayout>

EditTextActivity代碼

public class EditTextActivity extends AppCompatActivity {

    private Button mLoginBtn;
    private EditText mEtUsername, mEtPassword;

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

        mLoginBtn = findViewById(R.id.btn_login);
        mLoginBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(EditTextActivity.this, "登錄成功", Toast.LENGTH_SHORT).show();
            }
        });

        mEtUsername = findViewById(R.id.et_1);
        mEtUsername.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

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

            @Override
            public void afterTextChanged(Editable s) {

            }
        });
    }
}