Java 如何在onCreate方法中调用自定义活动
我正在开发一个简单的应用程序,它有两个活动:MainActivity和SecondActivity,以及一个扩展对话框的透明CustomActivity。这个 MainActivity有两个按钮(Java 如何在onCreate方法中调用自定义活动,java,android,android-studio,dialog,custom-activity,Java,Android,Android Studio,Dialog,Custom Activity,我正在开发一个简单的应用程序,它有两个活动:MainActivity和SecondActivity,以及一个扩展对话框的透明CustomActivity。这个 MainActivity有两个按钮(Yes\u按钮和No\u按钮) 当用户单击“是”按钮时,第二个活动将通过Intent和 客户活动将在它前面 当用户单击No_按钮时也会调用SecondActivity,但不会同时调用CustomActivity CustomActivity的调用基于if-else语句表达式。CustomActi
Yes\u按钮
和No\u按钮
)
- 当用户单击“是”按钮时,第二个活动将通过Intent和 客户活动将在它前面
- 当用户单击
也会调用SecondActivity,但不会同时调用CustomActivityNo_按钮时
No_按钮时,将调用第二个活动,而不调用CustomActivity(如预期!),但一旦用户
单击Yes\u按钮
,即使单击No\u按钮
,第二个活动仍将与CustomActivity一起显示
期望值
我希望每次单击Yes\u按钮
时,在CustomActivity旁边调用SecondActivity,并且每次单击No\u按钮
时,只调用SecondActivity
activity_main.xml
activity_second_activity.xml
activity\u custom\u activity.xml
checking.xml
在Android中,要将数据从一个活动传递到另一个活动,不需要声明静态变量(getNumber
在MainActivity中),应该使用Intent并捆绑在一起。请参阅下面的解决方案
MainActivity.java
SecondActivity.java
请用两个“```”字来包装代码!这对我有用。我已经试着解决这个问题好几个星期了,但是没有用。我真的很感激你帮助了我。你能给我解释一下这行代码吗?int input=v.getId()==R.id.button1?1:0; 尤其是这个?1:0这是代码的较短版本。如果单击按钮的id为R.id.button1,则返回1,否则(R.id.buttonB2)返回0。最后将值赋给输入变量。我如何通过三个按钮实现这一点。我试过这样做,但不起作用。在MainActivity button1中,button2和button3 int input2=v.getId()=R.id.button1?1:0; int input2=v.getId()==R.id.button1?2:0; 意向确定=新意向(主、本、二级);ok.putExtra(“input1”,input1);ok.putExtra(“input2”,input2);星触觉(ok);在第二个活动中,int Input1=getIntent().getIntExtra(“Input1”,0);int Input2=getIntent().getIntExtra(“Input2”,0);if(input1==1){custom.show();}else if(input2==2){custom.Cancel();}else{Do other things}int input=0;在第二个活动中,如果(v.getId()==R.id.button1){input=1;}否则如果(v.getId()==R.id.button2){input=2;}否则{input=3;}如果input=1,则单击按钮1。如果输入=2,则单击按钮2。如果输入=3,则单击按钮3。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xml:toos="http://schemas.android.com/tools">
<TextView
android:id="@+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/text" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/button1" />
</RelativeLayout>
public class MainActivity extends BaseActivity implements View.OnClickListener {
private static int getNumber;
Button Yes_button;
Button No_button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Yes_button = findViewById(R.id.button1);
No_button = findViewById(R.id.button2);
Yes_button.setOnClickListener(this);
No_button.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
int get_input = 1; // will be use in if else statement.
getNumber = get_input;
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
startActivity(intent);
break;
case R.id.button2:
Intent intent2 = new Intent(MainActivity.this, SecondActivity.class);
startActivity(intent2);
break;
}
}
public static int get_Logic() {
return getNumber;
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xml:toos="http://schemas.android.com/tools">
<TextView
android:id="@+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/text"
android:onClick="Click"
android:text="Click" />
</RelativeLayout>
public class SecondActivity extends AppCompatActivity {
private static int output;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second_activity);
int received = MainActivity.get_Logic();
output = received;
Display();
}
public final void Display() {
if (output == 1) {
CustomActivity custom = new CustomActivity(SecondActivity.this);
custom.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
custom.show();
} else {
CustomActivity custom = new CustomActivity(SecondActivity.this);
custom.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
custom.cancel();
}
}
public void Click(View view) {
Intent intent = new Intent(SecondActivity.this, MainActivity.class);
startActivity(intent);
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="180dp"
android:layout_height="250dp"
xml:toos="http://schemas.android.com/tools">
<TextView
android:id="@+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/text"
android:text="Skip" />
</RelativeLayout>
class CustomActivity extends Dialog {
Button SkipButton;
private Activity main;
public CustomActivity(Activity constr) {
super(constr);
this.main = constr;
}
@Override
protected void onCreate(Bundle saveInstanceState) {
super.onCreate(saveInstanceState);
setCancelable(false);
setContentView(R.layout.activity_custom_activity);
SkipButton = findViewById(R.id.button);
SkipButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dismiss();
}
});
}
}
<?XML version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape>
<solid android:color="#FFFF" />
<corners android:radius="20dp" />
<stroke android:width="4dp" android:color="@color/colorPrimary" />
<gradient />
</shape>
</item>
</selector>
public class MainActivity extends BaseActivity implements View.OnClickListener {
Button Yes_button;
Button No_button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Yes_button = findViewById(R.id.button1);
No_button = findViewById(R.id.button2);
Yes_button.setOnClickListener(this);
No_button.setOnClickListener(this);
}
@Override
public void onClick(View v) {
int input = v.getId() == R.id.button1 ? 1 : 0;
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("input", input);
startActivity(intent);
}
}
public class SecondActivity extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second_activity);
Display();
}
public final void Display() {
int input = getIntent().getIntExtra("input", 0);
CustomActivity custom = new CustomActivity(SecondActivity.this);
custom.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
if (input == 1) {
custom.show();
} else {
custom.cancel();
}
}
public void Click(View view) {
finish();
}
}