屏幕尺寸无效吗？

时间：2018-06-25 08:31:13

标签： android android-studio

我知道并应用表格来获取屏幕的尺寸，但是失败了，因为它显然在所有分辨率中均无效。例如，如果我为小分辨率定义了一些按钮的位置，则当我以更高的分辨率运行应用程序时，这些按钮会向下滑动。在下图中，我给出了按钮在Emulator 2.7 QVGA API 25（小）和Nexus 7 API 25（xlarge）中如何显示的示例。我是否可以得出结论，Android Studio出现了故障？请帮我看看问题，因为我之前已经搜索并列出了问题，但没有收到正确的答案。 这是我的xml：     

<android.support.constraint.ConstraintLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/scrollView"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="15"
    android:orientation="vertical">

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:components="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:id="@+id/layout1">

    </RelativeLayout>
</ScrollView>

这是我的java：

public class MainActivity extends AppCompatActivity {

View pulsado;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.activity_main);

    //Width and height of screen
    DisplayMetrics metrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(metrics);
    int width = metrics.widthPixels;
    int height = metrics.heightPixels;

    // Buttons are placed
    RelativeLayout layout = (RelativeLayout) findViewById(R.id.layout1);
    for (int i = 1; i < 5; i++) {
        RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
                RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        // Size of Buttons
        rel_btn.width = 4 * width / 100;
        rel_btn.height = 4 * width / 100;
        // Position of Buttons
        switch (i) {
            case 1:  // top left
                rel_btn.leftMargin = 0;
                rel_btn.topMargin = 0;
                break;
            case 2: // top right
                rel_btn.leftMargin = 96 * width / 100;
                rel_btn.topMargin = 0;
                break;
            case 3:  // lower left
                rel_btn.leftMargin = 0;
                rel_btn.topMargin = 80 * height / 100;
                break;
            case 4:  // lower right
                rel_btn.leftMargin = 96 * width / 100;
                rel_btn.topMargin = 80 * height / 100;
                break;
        }
        Button btnTag = new Button(this);
        btnTag.setLayoutParams(rel_btn);
        btnTag.setBackgroundColor(Color.BLUE);
        btnTag.setId(0 + i);
        btnTag.setOnClickListener(prueba);
        layout.addView(btnTag);
    }
}

    private View.OnClickListener prueba = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (pulsado != null) {
                Button button1 = (Button) pulsado;
                button1.setBackgroundColor(Color.BLUE);
            }
            Button button2 = (Button) view;
            GradientDrawable drawable = new GradientDrawable();
            drawable.setShape(GradientDrawable.RECTANGLE);
            drawable.setStroke(8, Color.RED);
            button2.setBackgroundDrawable(drawable);
            pulsado = view;
        }
    };
}

enter image description here

1 个答案:

答案 0 :(得分：1)

您可以尝试在布局文件本身中设置按钮。

Arguments: 
  C:\Program Files\nodejs\node.exe C:\Users\ganeshk\AppData\Roaming\npm\node_modules\yarn\bin\yarn.js install

PATH: 
  C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Microsoft\Web Platform Installer\;C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\;C:\Program Files (x86)\Windows Kits\8.0\Windows Performance Toolkit\;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\:C:\Program Files\Java\jdk1.7.0_79\bin;C:\Program Files\Java\jre7\bin;C:\Program Files\TortoiseGit\bin;C:\Program Files\nodejs\;C:\Users\ganeshk\AppData\Roaming\npm

Yarn version: 
  1.7.0

Node version: 
  8.11.3

Platform: 
  win32 x64

Trace: 
  Error: https://registry.yarnpkg.com/expo: SSL Error: SELF_SIGNED_CERT_IN_CHAIN
      at Request.module.exports.Request.onRequestResponse (C:\Users\ganeshk\AppData\Roaming\npm\node_modules\yarn\lib\cli.js:135442:24)
      at emitOne (events.js:116:13)
      at ClientRequest.emit (events.js:211:7)
      at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:543:21)
      at HTTPParser.parserOnHeadersComplete (_http_common.js:112:17)
      at TLSSocket.socketOnData (_http_client.js:440:20)
      at emitOne (events.js:116:13)
      at TLSSocket.emit (events.js:211:7)
      at addChunk (_stream_readable.js:263:12)
      at readableAddChunk (_stream_readable.js:250:11)

npm manifest: 
  {
    "name": "CLICK-OMAN",
    "version": "0.1.0",
    "private": true,
    "devDependencies": {
      "jest-expo": "25.0.0",
      "react-native-scripts": "1.14.0",
      "react-test-renderer": "16.3.1"
    },
    "main": "./node_modules/react-native-scripts/build/bin/crna-entry.js",
    "scripts": {
      "start": "react-native-scripts start",
      "eject": "react-native-scripts eject",
      "android": "react-native-scripts android",
      "ios": "react-native-scripts ios",
      "test": "jest"
    },
    "jest": {
      "preset": "jest-expo"
    },
    "dependencies": {
      "my-local-dep": "link:../../local/path",
      "expo": "25.0.0",
      "native-base": "^2.6.0",
      "react": "16.3.1",
      "react-native": "~0.55.2",
      "react-native-axios": "^0.17.1",
      "react-native-datepicker": "^1.7.2",
      "react-native-elements": "^0.19.1",
      "react-native-image-header-scroll-view": "^0.8.2",
      "react-native-material-bottom-navigation": "^1.0.0",
      "react-native-material-dropdown": "^0.11.1",
      "react-native-modal": "^6.1.0",
      "react-native-modal-selector": "^0.0.27",
      "react-native-swiper-flatlist": "^1.0.7",
      "react-native-tab-view": "^1.0.2",
      "react-navigation": "^2.4.1",
      "react-redux": "^5.0.7",
      "redux": "^4.0.0",
      "redux-form": "^7.4.2",
      "redux-persist": "^5.10.0",
      "redux-thunk": "^2.3.0",
      "remote-redux-devtools": "^0.5.12"
    }
  }

yarn manifest: 
  No manifest

Lockfile: 
  No lockfile
相关问题
最新问题